/usr/bin/java -ea -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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 17:24:17,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 17:24:17,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 17:24:17,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 17:24:17,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 17:24:17,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 17:24:17,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 17:24:17,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 17:24:17,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 17:24:17,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 17:24:17,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 17:24:17,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 17:24:17,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 17:24:17,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 17:24:17,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 17:24:17,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 17:24:17,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 17:24:17,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 17:24:17,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 17:24:17,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 17:24:17,622 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 17:24:17,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 17:24:17,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 17:24:17,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 17:24:17,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 17:24:17,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-27 17:24:17,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-27 17:24:17,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-27 17:24:17,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-27 17:24:17,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-27 17:24:17,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-27 17:24:17,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-27 17:24:17,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-27 17:24:17,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-27 17:24:17,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-27 17:24:17,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-27 17:24:17,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-27 17:24:17,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-27 17:24:17,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-27 17:24:17,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 17:24:17,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 17:24:17,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 17:24:17,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-27 17:24:17,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 17:24:17,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 17:24:17,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 17:24:17,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 17:24:17,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 17:24:17,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 17:24:17,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-27 17:24:17,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 17:24:17,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 17:24:17,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 17:24:17,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 17:24:17,650 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-27 17:24:17,650 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 17:24:17,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 17:24:17,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 17:24:17,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 17:24:17,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 17:24:17,827 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 17:24:17,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-04-27 17:24:17,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63ee5bcf/8a01b16e3f2040fab6d33b8bb8ae2bc0/FLAG0ec30fc8b [2022-04-27 17:24:18,208 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 17:24:18,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2022-04-27 17:24:18,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63ee5bcf/8a01b16e3f2040fab6d33b8bb8ae2bc0/FLAG0ec30fc8b [2022-04-27 17:24:18,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63ee5bcf/8a01b16e3f2040fab6d33b8bb8ae2bc0 [2022-04-27 17:24:18,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 17:24:18,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-27 17:24:18,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 17:24:18,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 17:24:18,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 17:24:18,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d3120b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18, skipping insertion in model container [2022-04-27 17:24:18,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 17:24:18,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 17:24:18,810 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/bresenham-ll_unwindbound1.c[597,610] [2022-04-27 17:24:18,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 17:24:18,852 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 17:24:18,863 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/bresenham-ll_unwindbound1.c[597,610] [2022-04-27 17:24:18,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 17:24:18,897 INFO L208 MainTranslator]: Completed translation [2022-04-27 17:24:18,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18 WrapperNode [2022-04-27 17:24:18,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 17:24:18,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 17:24:18,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 17:24:18,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 17:24:18,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 17:24:18,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 17:24:18,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 17:24:18,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 17:24:18,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (1/1) ... [2022-04-27 17:24:18,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 17:24:18,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 17:24:18,940 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) [2022-04-27 17:24:18,944 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 [2022-04-27 17:24:18,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 17:24:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 17:24:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 17:24:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 17:24:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 17:24:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 17:24:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 17:24:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 17:24:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 17:24:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 17:24:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 17:24:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 17:24:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 17:24:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 17:24:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 17:24:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 17:24:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 17:24:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 17:24:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 17:24:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 17:24:19,012 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 17:24:19,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 17:24:19,180 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 17:24:19,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 17:24:19,197 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 17:24:19,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 05:24:19 BoogieIcfgContainer [2022-04-27 17:24:19,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 17:24:19,199 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-27 17:24:19,199 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-27 17:24:19,204 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-27 17:24:19,206 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 05:24:19" (1/1) ... [2022-04-27 17:24:19,208 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-27 17:24:19,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 05:24:19 BasicIcfg [2022-04-27 17:24:19,232 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-27 17:24:19,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 17:24:19,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 17:24:19,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 17:24:19,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 05:24:18" (1/4) ... [2022-04-27 17:24:19,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77714c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 05:24:19, skipping insertion in model container [2022-04-27 17:24:19,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 05:24:18" (2/4) ... [2022-04-27 17:24:19,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77714c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 05:24:19, skipping insertion in model container [2022-04-27 17:24:19,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 05:24:19" (3/4) ... [2022-04-27 17:24:19,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77714c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 05:24:19, skipping insertion in model container [2022-04-27 17:24:19,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 05:24:19" (4/4) ... [2022-04-27 17:24:19,237 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.cJordan [2022-04-27 17:24:19,247 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-27 17:24:19,247 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 17:24:19,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 17:24:19,280 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f0abcd1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@108be579 [2022-04-27 17:24:19,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 17:24:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 17:24:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 17:24:19,291 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 17:24:19,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 17:24:19,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 17:24:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 17:24:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -498253564, now seen corresponding path program 1 times [2022-04-27 17:24:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 17:24:19,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799286992] [2022-04-27 17:24:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 17:24:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 17:24:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:19,455 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {28#true} is VALID [2022-04-27 17:24:19,456 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 17:24:19,456 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 17:24:19,458 INFO L272 TraceCheckUtils]: 0: Hoare triple {28#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 17:24:19,459 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {28#true} is VALID [2022-04-27 17:24:19,459 INFO L290 TraceCheckUtils]: 2: Hoare triple {28#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 17:24:19,459 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 17:24:19,459 INFO L272 TraceCheckUtils]: 4: Hoare triple {28#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#true} is VALID [2022-04-27 17:24:19,460 INFO L290 TraceCheckUtils]: 5: Hoare triple {28#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {28#true} is VALID [2022-04-27 17:24:19,461 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#true} [71] L31-3-->L31-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-27 17:24:19,462 INFO L290 TraceCheckUtils]: 7: Hoare triple {29#false} [73] L31-4-->L49: Formula: (and (= v_main_~xy~0_1 (* v_main_~x~0_3 v_main_~y~0_1)) (= v_main_~yx~0_1 (* v_main_~Y~0_1 v_main_~x~0_3))) InVars {main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~Y~0=v_main_~Y~0_1} OutVars{main_~xy~0=v_main_~xy~0_1, main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~yx~0=v_main_~yx~0_1, main_~Y~0=v_main_~Y~0_1} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0] {29#false} is VALID [2022-04-27 17:24:19,462 INFO L272 TraceCheckUtils]: 8: Hoare triple {29#false} [76] L49-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= 0 (+ (* v_main_~xy~0_7 (- 2)) (* v_main_~y~0_9 2) (* (- 1) v_main_~X~0_11) (* v_main_~yx~0_7 2) (* (- 1) v_main_~v~0_11) (* 2 v_main_~Y~0_11))) 1 0)) InVars {main_~v~0=v_main_~v~0_11, main_~yx~0=v_main_~yx~0_7, main_~Y~0=v_main_~Y~0_11, main_~X~0=v_main_~X~0_11, main_~xy~0=v_main_~xy~0_7, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0, main_~y~0] {29#false} is VALID [2022-04-27 17:24:19,463 INFO L290 TraceCheckUtils]: 9: Hoare triple {29#false} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {29#false} is VALID [2022-04-27 17:24:19,463 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-27 17:24:19,464 INFO L290 TraceCheckUtils]: 11: Hoare triple {29#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {29#false} is VALID [2022-04-27 17:24:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 17:24:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 17:24:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799286992] [2022-04-27 17:24:19,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799286992] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 17:24:19,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 17:24:19,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 17:24:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38834822] [2022-04-27 17:24:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 17:24:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 17:24:19,474 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 17:24:19,477 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:19,491 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:19,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 17:24:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 17:24:19,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 17:24:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 17:24:19,507 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:19,597 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-27 17:24:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 17:24:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 17:24:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 17:24:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-27 17:24:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-27 17:24:19,605 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 32 transitions. [2022-04-27 17:24:19,634 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:19,639 INFO L225 Difference]: With dead ends: 26 [2022-04-27 17:24:19,640 INFO L226 Difference]: Without dead ends: 21 [2022-04-27 17:24:19,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 17:24:19,643 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 17:24:19,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 17:24:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-04-27 17:24:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-04-27 17:24:19,662 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 17:24:19,663 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:19,663 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:19,664 INFO L87 Difference]: Start difference. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:19,666 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-04-27 17:24:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-04-27 17:24:19,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:19,667 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:19,667 INFO L74 IsIncluded]: Start isIncluded. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 21 states. [2022-04-27 17:24:19,667 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 21 states. [2022-04-27 17:24:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:19,669 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-04-27 17:24:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-04-27 17:24:19,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:19,670 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:19,670 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 17:24:19,670 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 17:24:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-04-27 17:24:19,673 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2022-04-27 17:24:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 17:24:19,673 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-04-27 17:24:19,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-04-27 17:24:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 17:24:19,674 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 17:24:19,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 17:24:19,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 17:24:19,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 17:24:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 17:24:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -467747580, now seen corresponding path program 1 times [2022-04-27 17:24:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 17:24:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266900982] [2022-04-27 17:24:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 17:24:19,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 17:24:19,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259403991] [2022-04-27 17:24:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:19,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 17:24:19,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 17:24:19,689 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) [2022-04-27 17:24:19,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-27 17:24:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:19,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-27 17:24:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:19,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 17:24:19,953 INFO L272 TraceCheckUtils]: 0: Hoare triple {124#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-27 17:24:19,953 INFO L290 TraceCheckUtils]: 1: Hoare triple {124#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {124#true} is VALID [2022-04-27 17:24:19,953 INFO L290 TraceCheckUtils]: 2: Hoare triple {124#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-27 17:24:19,955 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {124#true} {124#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-27 17:24:19,955 INFO L272 TraceCheckUtils]: 4: Hoare triple {124#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {124#true} is VALID [2022-04-27 17:24:19,956 INFO L290 TraceCheckUtils]: 5: Hoare triple {124#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:19,957 INFO L290 TraceCheckUtils]: 6: Hoare triple {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:19,957 INFO L290 TraceCheckUtils]: 7: Hoare triple {144#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {151#(and (= main_~xy~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~yx~0 0))} is VALID [2022-04-27 17:24:19,958 INFO L272 TraceCheckUtils]: 8: Hoare triple {151#(and (= main_~xy~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~yx~0 0))} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {155#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 17:24:19,959 INFO L290 TraceCheckUtils]: 9: Hoare triple {155#(<= 1 |__VERIFIER_assert_#in~cond|)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {159#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 17:24:19,960 INFO L290 TraceCheckUtils]: 10: Hoare triple {159#(<= 1 __VERIFIER_assert_~cond)} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {125#false} is VALID [2022-04-27 17:24:19,960 INFO L290 TraceCheckUtils]: 11: Hoare triple {125#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {125#false} is VALID [2022-04-27 17:24:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 17:24:19,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 17:24:19,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 17:24:19,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266900982] [2022-04-27 17:24:19,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 17:24:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259403991] [2022-04-27 17:24:19,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259403991] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 17:24:19,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 17:24:19,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-27 17:24:19,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292369234] [2022-04-27 17:24:19,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 17:24:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 17:24:19,968 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 17:24:19,968 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:19,985 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:19,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-27 17:24:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 17:24:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-27 17:24:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-27 17:24:19,987 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:20,159 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-04-27 17:24:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-27 17:24:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 17:24:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 17:24:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:20,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 39 transitions. [2022-04-27 17:24:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 39 transitions. [2022-04-27 17:24:20,166 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 39 transitions. [2022-04-27 17:24:20,198 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:20,200 INFO L225 Difference]: With dead ends: 32 [2022-04-27 17:24:20,200 INFO L226 Difference]: Without dead ends: 29 [2022-04-27 17:24:20,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-27 17:24:20,203 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 17:24:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 64 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 17:24:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-27 17:24:20,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-04-27 17:24:20,210 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 17:24:20,212 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:20,212 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:20,212 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:20,214 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-27 17:24:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-04-27 17:24:20,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:20,214 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:20,215 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 29 states. [2022-04-27 17:24:20,216 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 29 states. [2022-04-27 17:24:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:20,217 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-27 17:24:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-04-27 17:24:20,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:20,218 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:20,218 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 17:24:20,218 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 17:24:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-04-27 17:24:20,221 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2022-04-27 17:24:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 17:24:20,222 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-04-27 17:24:20,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 17:24:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-04-27 17:24:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-27 17:24:20,222 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 17:24:20,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 17:24:20,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-27 17:24:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 17:24:20,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 17:24:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 17:24:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1909475431, now seen corresponding path program 1 times [2022-04-27 17:24:20,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 17:24:20,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623426933] [2022-04-27 17:24:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:20,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 17:24:20,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 17:24:20,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591078363] [2022-04-27 17:24:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:20,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 17:24:20,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 17:24:20,451 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) [2022-04-27 17:24:20,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-27 17:24:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:20,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 17:24:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:20,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 17:24:20,651 INFO L272 TraceCheckUtils]: 0: Hoare triple {287#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-27 17:24:20,652 INFO L290 TraceCheckUtils]: 1: Hoare triple {287#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,653 INFO L290 TraceCheckUtils]: 2: Hoare triple {295#(<= 0 ~counter~0)} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,653 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {295#(<= 0 ~counter~0)} {287#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,654 INFO L272 TraceCheckUtils]: 4: Hoare triple {295#(<= 0 ~counter~0)} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,654 INFO L290 TraceCheckUtils]: 5: Hoare triple {295#(<= 0 ~counter~0)} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,655 INFO L290 TraceCheckUtils]: 6: Hoare triple {295#(<= 0 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,655 INFO L290 TraceCheckUtils]: 7: Hoare triple {311#(<= 1 ~counter~0)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,656 INFO L272 TraceCheckUtils]: 8: Hoare triple {311#(<= 1 ~counter~0)} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,656 INFO L290 TraceCheckUtils]: 9: Hoare triple {311#(<= 1 ~counter~0)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,659 INFO L290 TraceCheckUtils]: 10: Hoare triple {311#(<= 1 ~counter~0)} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,659 INFO L290 TraceCheckUtils]: 11: Hoare triple {311#(<= 1 ~counter~0)} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,663 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {311#(<= 1 ~counter~0)} {311#(<= 1 ~counter~0)} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,664 INFO L290 TraceCheckUtils]: 13: Hoare triple {311#(<= 1 ~counter~0)} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,664 INFO L290 TraceCheckUtils]: 14: Hoare triple {311#(<= 1 ~counter~0)} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,665 INFO L290 TraceCheckUtils]: 15: Hoare triple {311#(<= 1 ~counter~0)} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,666 INFO L290 TraceCheckUtils]: 16: Hoare triple {311#(<= 1 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {342#(<= 1 |main_#t~post6|)} is VALID [2022-04-27 17:24:20,666 INFO L290 TraceCheckUtils]: 17: Hoare triple {342#(<= 1 |main_#t~post6|)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {288#false} is VALID [2022-04-27 17:24:20,667 INFO L272 TraceCheckUtils]: 18: Hoare triple {288#false} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {288#false} is VALID [2022-04-27 17:24:20,667 INFO L290 TraceCheckUtils]: 19: Hoare triple {288#false} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {288#false} is VALID [2022-04-27 17:24:20,667 INFO L290 TraceCheckUtils]: 20: Hoare triple {288#false} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-27 17:24:20,667 INFO L290 TraceCheckUtils]: 21: Hoare triple {288#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-27 17:24:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 17:24:20,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 17:24:20,782 INFO L290 TraceCheckUtils]: 21: Hoare triple {288#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-27 17:24:20,782 INFO L290 TraceCheckUtils]: 20: Hoare triple {288#false} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {288#false} is VALID [2022-04-27 17:24:20,782 INFO L290 TraceCheckUtils]: 19: Hoare triple {288#false} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {288#false} is VALID [2022-04-27 17:24:20,782 INFO L272 TraceCheckUtils]: 18: Hoare triple {288#false} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {288#false} is VALID [2022-04-27 17:24:20,783 INFO L290 TraceCheckUtils]: 17: Hoare triple {342#(<= 1 |main_#t~post6|)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {288#false} is VALID [2022-04-27 17:24:20,783 INFO L290 TraceCheckUtils]: 16: Hoare triple {311#(<= 1 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {342#(<= 1 |main_#t~post6|)} is VALID [2022-04-27 17:24:20,785 INFO L290 TraceCheckUtils]: 15: Hoare triple {311#(<= 1 ~counter~0)} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,786 INFO L290 TraceCheckUtils]: 14: Hoare triple {311#(<= 1 ~counter~0)} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,787 INFO L290 TraceCheckUtils]: 13: Hoare triple {311#(<= 1 ~counter~0)} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,788 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {287#true} {311#(<= 1 ~counter~0)} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,788 INFO L290 TraceCheckUtils]: 11: Hoare triple {287#true} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-27 17:24:20,788 INFO L290 TraceCheckUtils]: 10: Hoare triple {287#true} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-27 17:24:20,788 INFO L290 TraceCheckUtils]: 9: Hoare triple {287#true} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {287#true} is VALID [2022-04-27 17:24:20,788 INFO L272 TraceCheckUtils]: 8: Hoare triple {311#(<= 1 ~counter~0)} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {287#true} is VALID [2022-04-27 17:24:20,789 INFO L290 TraceCheckUtils]: 7: Hoare triple {311#(<= 1 ~counter~0)} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,790 INFO L290 TraceCheckUtils]: 6: Hoare triple {295#(<= 0 ~counter~0)} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {311#(<= 1 ~counter~0)} is VALID [2022-04-27 17:24:20,790 INFO L290 TraceCheckUtils]: 5: Hoare triple {295#(<= 0 ~counter~0)} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,790 INFO L272 TraceCheckUtils]: 4: Hoare triple {295#(<= 0 ~counter~0)} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,791 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {295#(<= 0 ~counter~0)} {287#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,791 INFO L290 TraceCheckUtils]: 2: Hoare triple {295#(<= 0 ~counter~0)} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,792 INFO L290 TraceCheckUtils]: 1: Hoare triple {287#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {295#(<= 0 ~counter~0)} is VALID [2022-04-27 17:24:20,792 INFO L272 TraceCheckUtils]: 0: Hoare triple {287#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {287#true} is VALID [2022-04-27 17:24:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 17:24:20,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 17:24:20,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623426933] [2022-04-27 17:24:20,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 17:24:20,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591078363] [2022-04-27 17:24:20,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591078363] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 17:24:20,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-27 17:24:20,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-04-27 17:24:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738100551] [2022-04-27 17:24:20,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-27 17:24:20,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-27 17:24:20,794 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 17:24:20,794 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 17:24:20,810 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:20,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 17:24:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 17:24:20,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 17:24:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-27 17:24:20,811 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 17:24:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:20,865 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-04-27 17:24:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 17:24:20,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-04-27 17:24:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 17:24:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 17:24:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-04-27 17:24:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 17:24:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-04-27 17:24:20,867 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 24 transitions. [2022-04-27 17:24:20,883 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:20,884 INFO L225 Difference]: With dead ends: 26 [2022-04-27 17:24:20,884 INFO L226 Difference]: Without dead ends: 24 [2022-04-27 17:24:20,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-27 17:24:20,885 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 17:24:20,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 42 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 17:24:20,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-27 17:24:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-27 17:24:20,886 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 17:24:20,887 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:20,887 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:20,887 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:20,888 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-04-27 17:24:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-27 17:24:20,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:20,888 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:20,889 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-27 17:24:20,889 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-27 17:24:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:20,890 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-04-27 17:24:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-27 17:24:20,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:20,890 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:20,890 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 17:24:20,890 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 17:24:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-04-27 17:24:20,891 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2022-04-27 17:24:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 17:24:20,891 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-04-27 17:24:20,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 17:24:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-04-27 17:24:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-27 17:24:20,892 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 17:24:20,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 17:24:20,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-27 17:24:21,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-27 17:24:21,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 17:24:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 17:24:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash -968220272, now seen corresponding path program 1 times [2022-04-27 17:24:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 17:24:21,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695519300] [2022-04-27 17:24:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 17:24:21,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 17:24:21,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205302958] [2022-04-27 17:24:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:21,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 17:24:21,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 17:24:21,123 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) [2022-04-27 17:24:21,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-27 17:24:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:21,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-27 17:24:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 17:24:21,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 17:24:21,362 INFO L272 TraceCheckUtils]: 0: Hoare triple {523#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,363 INFO L290 TraceCheckUtils]: 1: Hoare triple {523#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {523#true} is VALID [2022-04-27 17:24:21,363 INFO L290 TraceCheckUtils]: 2: Hoare triple {523#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,363 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {523#true} {523#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,363 INFO L272 TraceCheckUtils]: 4: Hoare triple {523#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,364 INFO L290 TraceCheckUtils]: 5: Hoare triple {523#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,364 INFO L290 TraceCheckUtils]: 6: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,366 INFO L290 TraceCheckUtils]: 7: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,366 INFO L272 TraceCheckUtils]: 8: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {523#true} is VALID [2022-04-27 17:24:21,366 INFO L290 TraceCheckUtils]: 9: Hoare triple {523#true} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {523#true} is VALID [2022-04-27 17:24:21,366 INFO L290 TraceCheckUtils]: 10: Hoare triple {523#true} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,367 INFO L290 TraceCheckUtils]: 11: Hoare triple {523#true} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,372 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {523#true} {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,372 INFO L290 TraceCheckUtils]: 13: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,373 INFO L290 TraceCheckUtils]: 14: Hoare triple {543#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {571#(and (= main_~x~0 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,374 INFO L290 TraceCheckUtils]: 15: Hoare triple {571#(and (= main_~x~0 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,375 INFO L290 TraceCheckUtils]: 16: Hoare triple {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,376 INFO L290 TraceCheckUtils]: 17: Hoare triple {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [74] L31-1-->L31-4: Formula: (not (< |v_main_#t~post6_3| 1)) InVars {main_#t~post6=|v_main_#t~post6_3|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,377 INFO L290 TraceCheckUtils]: 18: Hoare triple {575#(and (= (+ (- 1) main_~x~0) 0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~y~0 0))} [73] L31-4-->L49: Formula: (and (= v_main_~xy~0_1 (* v_main_~x~0_3 v_main_~y~0_1)) (= v_main_~yx~0_1 (* v_main_~Y~0_1 v_main_~x~0_3))) InVars {main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~Y~0=v_main_~Y~0_1} OutVars{main_~xy~0=v_main_~xy~0_1, main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~yx~0=v_main_~yx~0_1, main_~Y~0=v_main_~Y~0_1} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0] {585#(and (= main_~y~0 main_~xy~0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~Y~0 main_~yx~0) (= main_~y~0 0))} is VALID [2022-04-27 17:24:21,377 INFO L272 TraceCheckUtils]: 19: Hoare triple {585#(and (= main_~y~0 main_~xy~0) (= main_~v~0 (+ (* (- 1) main_~X~0) (* main_~Y~0 4))) (= main_~Y~0 main_~yx~0) (= main_~y~0 0))} [76] L49-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= 0 (+ (* v_main_~xy~0_7 (- 2)) (* v_main_~y~0_9 2) (* (- 1) v_main_~X~0_11) (* v_main_~yx~0_7 2) (* (- 1) v_main_~v~0_11) (* 2 v_main_~Y~0_11))) 1 0)) InVars {main_~v~0=v_main_~v~0_11, main_~yx~0=v_main_~yx~0_7, main_~Y~0=v_main_~Y~0_11, main_~X~0=v_main_~X~0_11, main_~xy~0=v_main_~xy~0_7, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0, main_~y~0] {589#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 17:24:21,378 INFO L290 TraceCheckUtils]: 20: Hoare triple {589#(<= 1 |__VERIFIER_assert_#in~cond|)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {593#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 17:24:21,378 INFO L290 TraceCheckUtils]: 21: Hoare triple {593#(<= 1 __VERIFIER_assert_~cond)} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-27 17:24:21,379 INFO L290 TraceCheckUtils]: 22: Hoare triple {524#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-27 17:24:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 17:24:21,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 17:24:21,535 INFO L290 TraceCheckUtils]: 22: Hoare triple {524#false} [87] L15-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-27 17:24:21,536 INFO L290 TraceCheckUtils]: 21: Hoare triple {593#(<= 1 __VERIFIER_assert_~cond)} [83] L14-->L15: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {524#false} is VALID [2022-04-27 17:24:21,536 INFO L290 TraceCheckUtils]: 20: Hoare triple {589#(<= 1 |__VERIFIER_assert_#in~cond|)} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {593#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 17:24:21,537 INFO L272 TraceCheckUtils]: 19: Hoare triple {609#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} [76] L49-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= 0 (+ (* v_main_~xy~0_7 (- 2)) (* v_main_~y~0_9 2) (* (- 1) v_main_~X~0_11) (* v_main_~yx~0_7 2) (* (- 1) v_main_~v~0_11) (* 2 v_main_~Y~0_11))) 1 0)) InVars {main_~v~0=v_main_~v~0_11, main_~yx~0=v_main_~yx~0_7, main_~Y~0=v_main_~Y~0_11, main_~X~0=v_main_~X~0_11, main_~xy~0=v_main_~xy~0_7, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0, main_~y~0] {589#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 17:24:21,538 INFO L290 TraceCheckUtils]: 18: Hoare triple {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} [73] L31-4-->L49: Formula: (and (= v_main_~xy~0_1 (* v_main_~x~0_3 v_main_~y~0_1)) (= v_main_~yx~0_1 (* v_main_~Y~0_1 v_main_~x~0_3))) InVars {main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~Y~0=v_main_~Y~0_1} OutVars{main_~xy~0=v_main_~xy~0_1, main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_3, main_~yx~0=v_main_~yx~0_1, main_~Y~0=v_main_~Y~0_1} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0] {609#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} is VALID [2022-04-27 17:24:21,539 INFO L290 TraceCheckUtils]: 17: Hoare triple {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} [74] L31-1-->L31-4: Formula: (not (< |v_main_#t~post6_3| 1)) InVars {main_#t~post6=|v_main_#t~post6_3|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-27 17:24:21,539 INFO L290 TraceCheckUtils]: 16: Hoare triple {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-27 17:24:21,543 INFO L290 TraceCheckUtils]: 15: Hoare triple {623#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [90] L39-2-->L31-3: Formula: (= v_main_~x~0_1 (+ v_main_~x~0_2 1)) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] {613#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-27 17:24:21,544 INFO L290 TraceCheckUtils]: 14: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [85] L39-->L39-2: Formula: (and (= v_main_~v~0_6 (+ v_main_~v~0_7 (* v_main_~Y~0_8 2))) (< v_main_~v~0_7 0)) InVars {main_~v~0=v_main_~v~0_7, main_~Y~0=v_main_~Y~0_8} OutVars{main_~v~0=v_main_~v~0_6, main_~Y~0=v_main_~Y~0_8} AuxVars[] AssignedVars[main_~v~0] {623#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-27 17:24:21,545 INFO L290 TraceCheckUtils]: 13: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [81] L34-1-->L39: Formula: (<= v_main_~x~0_9 v_main_~X~0_8) InVars {main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} OutVars{main_~x~0=v_main_~x~0_9, main_~X~0=v_main_~X~0_8} AuxVars[] AssignedVars[] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-27 17:24:21,547 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {523#true} {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [93] __VERIFIER_assertEXIT-->L34-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-27 17:24:21,547 INFO L290 TraceCheckUtils]: 11: Hoare triple {523#true} [89] L14-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,547 INFO L290 TraceCheckUtils]: 10: Hoare triple {523#true} [84] L14-->L14-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,548 INFO L290 TraceCheckUtils]: 9: Hoare triple {523#true} [79] __VERIFIER_assertENTRY-->L14: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {523#true} is VALID [2022-04-27 17:24:21,548 INFO L272 TraceCheckUtils]: 8: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [77] L34-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 1) v_main_~X~0_10) (* (- 1) v_main_~v~0_10) (* v_main_~xy~0_6 (- 2)) (* 2 v_main_~Y~0_10) (* v_main_~yx~0_6 2)) 0) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~xy~0=v_main_~xy~0_6, main_~v~0=v_main_~v~0_10, main_~yx~0=v_main_~yx~0_6, main_~Y~0=v_main_~Y~0_10, main_~X~0=v_main_~X~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~yx~0, main_~Y~0, main_~X~0, main_~xy~0] {523#true} is VALID [2022-04-27 17:24:21,548 INFO L290 TraceCheckUtils]: 7: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [75] L31-1-->L34: Formula: (and (< |v_main_#t~post6_5| 1) (= v_main_~yx~0_4 (* v_main_~Y~0_6 v_main_~x~0_7)) (= v_main_~xy~0_4 (* v_main_~X~0_5 v_main_~y~0_6))) InVars {main_~y~0=v_main_~y~0_6, main_~x~0=v_main_~x~0_7, main_~Y~0=v_main_~Y~0_6, main_#t~post6=|v_main_#t~post6_5|, main_~X~0=v_main_~X~0_5} OutVars{main_~x~0=v_main_~x~0_7, main_~yx~0=v_main_~yx~0_4, main_~Y~0=v_main_~Y~0_6, main_~X~0=v_main_~X~0_5, main_~xy~0=v_main_~xy~0_4, main_~y~0=v_main_~y~0_6} AuxVars[] AssignedVars[main_~yx~0, main_~xy~0, main_#t~post6] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-27 17:24:21,549 INFO L290 TraceCheckUtils]: 6: Hoare triple {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} [72] L31-3-->L31-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-27 17:24:21,550 INFO L290 TraceCheckUtils]: 5: Hoare triple {523#true} [69] mainENTRY-->L31-3: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~X~0_2 |v_main_#t~nondet4_2|) (= v_main_~Y~0_3 |v_main_#t~nondet5_2|) (= (+ (* v_main_~Y~0_3 2) (* (- 1) v_main_~X~0_2)) v_main_~v~0_2) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (= v_main_~x~0_4 0) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~y~0_3 0)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_2, main_~x~0=v_main_~x~0_4, main_~Y~0=v_main_~Y~0_3, main_~yx~0=v_main_~yx~0_3, main_~X~0=v_main_~X~0_2, main_~y~0=v_main_~y~0_3, main_~xy~0=v_main_~xy~0_3} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~x~0, main_~Y~0, main_~yx~0, main_~X~0, main_~y~0, main_~xy~0] {627#(= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) main_~X~0 main_~v~0 (* main_~Y~0 2)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-27 17:24:21,550 INFO L272 TraceCheckUtils]: 4: Hoare triple {523#true} [66] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,550 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {523#true} {523#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,550 INFO L290 TraceCheckUtils]: 2: Hoare triple {523#true} [70] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,550 INFO L290 TraceCheckUtils]: 1: Hoare triple {523#true} [67] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= (select |v_#length_1| 2) 15) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {523#true} is VALID [2022-04-27 17:24:21,550 INFO L272 TraceCheckUtils]: 0: Hoare triple {523#true} [65] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {523#true} is VALID [2022-04-27 17:24:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 17:24:21,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 17:24:21,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695519300] [2022-04-27 17:24:21,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 17:24:21,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205302958] [2022-04-27 17:24:21,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205302958] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 17:24:21,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-27 17:24:21,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-04-27 17:24:21,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453859986] [2022-04-27 17:24:21,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-27 17:24:21,552 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2022-04-27 17:24:21,552 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 17:24:21,552 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:21,683 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:21,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-27 17:24:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 17:24:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-27 17:24:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-27 17:24:21,685 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:21,940 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2022-04-27 17:24:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-27 17:24:21,940 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2022-04-27 17:24:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 17:24:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 30 transitions. [2022-04-27 17:24:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 30 transitions. [2022-04-27 17:24:21,942 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 30 transitions. [2022-04-27 17:24:21,971 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 17:24:21,972 INFO L225 Difference]: With dead ends: 31 [2022-04-27 17:24:21,972 INFO L226 Difference]: Without dead ends: 24 [2022-04-27 17:24:21,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-27 17:24:21,973 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-27 17:24:21,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 88 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-27 17:24:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-04-27 17:24:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-04-27 17:24:21,974 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 17:24:21,974 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:21,975 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:21,975 INFO L87 Difference]: Start difference. First operand 24 states. Second operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:21,976 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2022-04-27 17:24:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-04-27 17:24:21,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:21,976 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:21,976 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-27 17:24:21,976 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 24 states. [2022-04-27 17:24:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 17:24:21,977 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2022-04-27 17:24:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-04-27 17:24:21,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 17:24:21,977 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 17:24:21,977 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 17:24:21,977 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 17:24:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 17:24:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2022-04-27 17:24:21,978 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 23 [2022-04-27 17:24:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 17:24:21,978 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2022-04-27 17:24:21,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 17:24:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-04-27 17:24:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-27 17:24:21,979 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 17:24:21,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 17:24:21,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-27 17:24:22,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 17:24:22,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 17:24:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 17:24:22,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1519292561, now seen corresponding path program 1 times [2022-04-27 17:24:22,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 17:24:22,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758640975] [2022-04-27 17:24:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:22,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 17:24:22,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 17:24:22,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153961249] [2022-04-27 17:24:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 17:24:22,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 17:24:22,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 17:24:22,220 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) [2022-04-27 17:24:22,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-27 17:24:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 17:24:22,254 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-27 17:24:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 17:24:22,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-27 17:24:22,282 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-27 17:24:22,283 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 17:24:22,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-27 17:24:22,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 17:24:22,502 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-27 17:24:22,504 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 17:24:22,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 05:24:22 BasicIcfg [2022-04-27 17:24:22,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 17:24:22,529 INFO L158 Benchmark]: Toolchain (without parser) took 3880.29ms. Allocated memory was 187.7MB in the beginning and 225.4MB in the end (delta: 37.7MB). Free memory was 138.0MB in the beginning and 166.4MB in the end (delta: -28.4MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-04-27 17:24:22,530 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 154.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 17:24:22,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.98ms. Allocated memory is still 187.7MB. Free memory was 137.9MB in the beginning and 163.3MB in the end (delta: -25.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 17:24:22,530 INFO L158 Benchmark]: Boogie Preprocessor took 20.11ms. Allocated memory is still 187.7MB. Free memory was 163.3MB in the beginning and 161.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 17:24:22,530 INFO L158 Benchmark]: RCFGBuilder took 279.80ms. Allocated memory is still 187.7MB. Free memory was 161.9MB in the beginning and 150.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 17:24:22,532 INFO L158 Benchmark]: IcfgTransformer took 33.16ms. Allocated memory is still 187.7MB. Free memory was 150.4MB in the beginning and 148.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-27 17:24:22,532 INFO L158 Benchmark]: TraceAbstraction took 3294.06ms. Allocated memory was 187.7MB in the beginning and 225.4MB in the end (delta: 37.7MB). Free memory was 148.3MB in the beginning and 166.4MB in the end (delta: -18.1MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB. [2022-04-27 17:24:22,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 154.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.98ms. Allocated memory is still 187.7MB. Free memory was 137.9MB in the beginning and 163.3MB in the end (delta: -25.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.11ms. Allocated memory is still 187.7MB. Free memory was 163.3MB in the beginning and 161.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 279.80ms. Allocated memory is still 187.7MB. Free memory was 161.9MB in the beginning and 150.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 33.16ms. Allocated memory is still 187.7MB. Free memory was 150.4MB in the beginning and 148.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3294.06ms. Allocated memory was 187.7MB in the beginning and 225.4MB in the end (delta: 37.7MB). Free memory was 148.3MB in the beginning and 166.4MB in the end (delta: -18.1MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [\old(counter)=5, counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [\old(counter)=0, counter=0, v=0, X=4, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [\old(counter)=0, counter=1, counter++=0, v=0, x=0, X=4, Y=2, y=0] [L31] COND TRUE counter++<1 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [\old(counter)=0, counter=1, v=0, X=4, x=0, x=0, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(counter)=0, counter=1, v=0, X=4, x=0, x=0, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [\old(counter)=0, counter=1, v=0, X=4, x=0, x=0, x=0, y=0, Y=2] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [\old(counter)=0, counter=1, v=-4, x=0, x=0, X=4, x=0, y=1, Y=2] [L45] x++ VAL [\old(counter)=0, counter=1, v=-4, x=0, X=4, x=0, x=1, y=1, Y=2] [L31] EXPR counter++ VAL [\old(counter)=0, counter=2, counter++=1, v=-4, x=0, X=4, x=0, x=1, y=1, Y=2] [L31] COND FALSE !(counter++<1) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [\old(counter)=0, counter=2, v=-4, x=1, X=4, x=2, x=1, Y=2, y=1] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L14] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L16] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 225 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 76 mSDtfsCounter, 160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 624 SizeOfPredicates, 7 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 12/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-27 17:24:22,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...