/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench/bresenham-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 18:08:02,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 18:08:02,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 18:08:02,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 18:08:02,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 18:08:02,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 18:08:02,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 18:08:02,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 18:08:02,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 18:08:02,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 18:08:02,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 18:08:02,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 18:08:02,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 18:08:02,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 18:08:02,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 18:08:02,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 18:08:02,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 18:08:02,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 18:08:02,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 18:08:02,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 18:08:02,496 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 18:08:02,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 18:08:02,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 18:08:02,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 18:08:02,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 18:08:02,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 18:08:02,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 18:08:02,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 18:08:02,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 18:08:02,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 18:08:02,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 18:08:02,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 18:08:02,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 18:08:02,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 18:08:02,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 18:08:02,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 18:08:02,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 18:08:02,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 18:08:02,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 18:08:02,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 18:08:02,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 18:08:02,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 18:08:02,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 18:08:02,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 18:08:02,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 18:08:02,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 18:08:02,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 18:08:02,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 18:08:02,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 18:08:02,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 18:08:02,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 18:08:02,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 18:08:02,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 18:08:02,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 18:08:02,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 18:08:02,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 18:08:02,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 18:08:02,535 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 18:08:02,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 18:08:02,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 18:08:02,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 18:08:02,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 18:08:02,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 18:08:02,771 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 18:08:02,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/bresenham-ll.c [2022-03-18 18:08:02,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6dfbf21/c8b75a450ea44fd3b18da1b9749a6bef/FLAGc0c8b1450 [2022-03-18 18:08:03,212 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 18:08:03,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/bresenham-ll.c [2022-03-18 18:08:03,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6dfbf21/c8b75a450ea44fd3b18da1b9749a6bef/FLAGc0c8b1450 [2022-03-18 18:08:03,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6dfbf21/c8b75a450ea44fd3b18da1b9749a6bef [2022-03-18 18:08:03,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 18:08:03,230 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 18:08:03,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 18:08:03,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 18:08:03,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 18:08:03,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7f32e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03, skipping insertion in model container [2022-03-18 18:08:03,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 18:08:03,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 18:08:03,390 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/bresenham-ll.c[597,610] [2022-03-18 18:08:03,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 18:08:03,407 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 18:08:03,417 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/bresenham-ll.c[597,610] [2022-03-18 18:08:03,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 18:08:03,432 INFO L208 MainTranslator]: Completed translation [2022-03-18 18:08:03,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03 WrapperNode [2022-03-18 18:08:03,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 18:08:03,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 18:08:03,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 18:08:03,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 18:08:03,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 18:08:03,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 18:08:03,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 18:08:03,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 18:08:03,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 18:08:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:03,490 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) [2022-03-18 18:08:03,491 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 [2022-03-18 18:08:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 18:08:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 18:08:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 18:08:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 18:08:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 18:08:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 18:08:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 18:08:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 18:08:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 18:08:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 18:08:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 18:08:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 18:08:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 18:08:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 18:08:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 18:08:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 18:08:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 18:08:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 18:08:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 18:08:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 18:08:03,576 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 18:08:03,578 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 18:08:03,723 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 18:08:03,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 18:08:03,728 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 18:08:03,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:08:03 BoogieIcfgContainer [2022-03-18 18:08:03,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 18:08:03,730 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 18:08:03,730 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 18:08:03,731 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 18:08:03,737 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:08:03" (1/1) ... [2022-03-18 18:08:03,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 06:08:03 BasicIcfg [2022-03-18 18:08:03,762 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 18:08:03,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 18:08:03,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 18:08:03,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 18:08:03,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 06:08:03" (1/4) ... [2022-03-18 18:08:03,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e61c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 06:08:03, skipping insertion in model container [2022-03-18 18:08:03,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:08:03" (2/4) ... [2022-03-18 18:08:03,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e61c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 06:08:03, skipping insertion in model container [2022-03-18 18:08:03,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:08:03" (3/4) ... [2022-03-18 18:08:03,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e61c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 06:08:03, skipping insertion in model container [2022-03-18 18:08:03,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 06:08:03" (4/4) ... [2022-03-18 18:08:03,768 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll.cJordan [2022-03-18 18:08:03,772 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 18:08:03,772 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 18:08:03,811 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 18:08:03,816 INFO L340 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 [2022-03-18 18:08:03,816 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 18:08:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-03-18 18:08:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-18 18:08:03,835 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:08:03,836 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:08:03,836 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:08:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:08:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash 908069110, now seen corresponding path program 1 times [2022-03-18 18:08:03,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:08:03,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765861721] [2022-03-18 18:08:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:08:03,913 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:08:03,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498179344] [2022-03-18 18:08:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:03,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:03,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:03,921 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) [2022-03-18 18:08:03,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 18:08:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:08:03,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 18:08:03,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:08:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 18:08:04,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 18:08:04,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:08:04,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765861721] [2022-03-18 18:08:04,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:08:04,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498179344] [2022-03-18 18:08:04,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498179344] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 18:08:04,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 18:08:04,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 18:08:04,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567446862] [2022-03-18 18:08:04,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 18:08:04,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 18:08:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:08:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 18:08:04,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 18:08:04,194 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-03-18 18:08:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:08:04,284 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-03-18 18:08:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 18:08:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 11 [2022-03-18 18:08:04,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:08:04,292 INFO L225 Difference]: With dead ends: 37 [2022-03-18 18:08:04,292 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 18:08:04,293 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 18:08:04,296 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 18:08:04,297 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 85 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 18:08:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 18:08:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-03-18 18:08:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 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) [2022-03-18 18:08:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-03-18 18:08:04,325 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2022-03-18 18:08:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:08:04,325 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-03-18 18:08:04,325 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-03-18 18:08:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-03-18 18:08:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 18:08:04,326 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:08:04,327 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:08:04,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 18:08:04,549 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-18 18:08:04,550 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:08:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:08:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1167660322, now seen corresponding path program 1 times [2022-03-18 18:08:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:08:04,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271430746] [2022-03-18 18:08:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:08:04,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:08:04,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028294621] [2022-03-18 18:08:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:04,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:04,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:04,565 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) [2022-03-18 18:08:04,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 18:08:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:08:04,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-18 18:08:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:08:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 18:08:04,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:08:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 18:08:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:08:05,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271430746] [2022-03-18 18:08:05,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:08:05,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028294621] [2022-03-18 18:08:05,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028294621] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:08:05,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:08:05,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2022-03-18 18:08:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875558544] [2022-03-18 18:08:05,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:08:05,149 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 18:08:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:08:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 18:08:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-03-18 18:08:05,150 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 16 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 18:08:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:08:05,533 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-03-18 18:08:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 18:08:05,534 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2022-03-18 18:08:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:08:05,535 INFO L225 Difference]: With dead ends: 39 [2022-03-18 18:08:05,535 INFO L226 Difference]: Without dead ends: 35 [2022-03-18 18:08:05,535 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-03-18 18:08:05,537 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 18:08:05,537 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 117 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 18:08:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-18 18:08:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-03-18 18:08:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 18:08:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-03-18 18:08:05,542 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 20 [2022-03-18 18:08:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:08:05,542 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-03-18 18:08:05,543 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 18:08:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-03-18 18:08:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 18:08:05,544 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:08:05,544 INFO L500 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:08:05,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-18 18:08:05,766 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-03-18 18:08:05,767 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:08:05,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:08:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash -898552581, now seen corresponding path program 1 times [2022-03-18 18:08:05,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:08:05,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068481398] [2022-03-18 18:08:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:08:05,778 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:08:05,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935194237] [2022-03-18 18:08:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:05,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:05,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:05,781 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) [2022-03-18 18:08:05,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 18:08:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:08:05,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-18 18:08:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:08:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 18:08:06,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:08:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 18:08:06,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:08:06,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068481398] [2022-03-18 18:08:06,609 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:08:06,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935194237] [2022-03-18 18:08:06,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935194237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:08:06,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:08:06,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-03-18 18:08:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259499647] [2022-03-18 18:08:06,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:08:06,611 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-18 18:08:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:08:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-18 18:08:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-18 18:08:06,613 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 22 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-18 18:08:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:08:07,215 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-03-18 18:08:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-18 18:08:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 27 [2022-03-18 18:08:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:08:07,216 INFO L225 Difference]: With dead ends: 50 [2022-03-18 18:08:07,216 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 18:08:07,217 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 18:08:07,218 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:08:07,219 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 106 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 163 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2022-03-18 18:08:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 18:08:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2022-03-18 18:08:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 18:08:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-03-18 18:08:07,224 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 27 [2022-03-18 18:08:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:08:07,224 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-03-18 18:08:07,225 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-03-18 18:08:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-03-18 18:08:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-18 18:08:07,225 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:08:07,226 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:08:07,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 18:08:07,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:07,448 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:08:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:08:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1180264568, now seen corresponding path program 1 times [2022-03-18 18:08:07,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:08:07,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500704510] [2022-03-18 18:08:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:08:07,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:08:07,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575528401] [2022-03-18 18:08:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:07,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:07,461 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) [2022-03-18 18:08:07,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 18:08:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:08:07,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-18 18:08:07,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:08:07,614 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:08:07,617 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:08:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-18 18:08:09,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:08:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-18 18:08:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:08:09,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500704510] [2022-03-18 18:08:09,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:08:09,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575528401] [2022-03-18 18:08:09,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575528401] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:08:09,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:08:09,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-03-18 18:08:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850304632] [2022-03-18 18:08:09,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:08:09,754 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 18:08:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:08:09,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 18:08:09,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-18 18:08:09,756 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 18:08:11,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:08:15,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:08:17,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:08:19,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:08:21,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:08:23,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:08:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:08:26,247 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-03-18 18:08:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 18:08:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-03-18 18:08:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:08:26,252 INFO L225 Difference]: With dead ends: 46 [2022-03-18 18:08:26,252 INFO L226 Difference]: Without dead ends: 42 [2022-03-18 18:08:26,253 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-03-18 18:08:26,253 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 17 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:08:26,254 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 86 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 107 Invalid, 6 Unknown, 0 Unchecked, 12.1s Time] [2022-03-18 18:08:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-18 18:08:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-03-18 18:08:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 18:08:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-03-18 18:08:26,258 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 36 [2022-03-18 18:08:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:08:26,258 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-03-18 18:08:26,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 18:08:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-03-18 18:08:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-18 18:08:26,259 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:08:26,259 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:08:26,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 18:08:26,483 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:26,484 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:08:26,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:08:26,484 INFO L85 PathProgramCache]: Analyzing trace with hash 64499913, now seen corresponding path program 1 times [2022-03-18 18:08:26,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:08:26,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381109709] [2022-03-18 18:08:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:08:26,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:08:26,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665327990] [2022-03-18 18:08:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:26,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:26,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:08:26,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 18:08:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:08:26,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 18:08:26,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:08:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 18:08:26,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:08:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 18:08:26,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:08:26,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381109709] [2022-03-18 18:08:26,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:08:26,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665327990] [2022-03-18 18:08:26,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665327990] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:08:26,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:08:26,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-03-18 18:08:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940099212] [2022-03-18 18:08:26,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:08:26,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 18:08:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:08:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 18:08:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-18 18:08:26,914 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:08:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:08:27,061 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2022-03-18 18:08:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 18:08:27,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 36 [2022-03-18 18:08:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:08:27,064 INFO L225 Difference]: With dead ends: 51 [2022-03-18 18:08:27,064 INFO L226 Difference]: Without dead ends: 51 [2022-03-18 18:08:27,064 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-18 18:08:27,065 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:08:27,065 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 113 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 18:08:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-18 18:08:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2022-03-18 18:08:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 18:08:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-03-18 18:08:27,070 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 36 [2022-03-18 18:08:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:08:27,070 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-03-18 18:08:27,070 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:08:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-03-18 18:08:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 18:08:27,075 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:08:27,075 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:08:27,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 18:08:27,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:27,288 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:08:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:08:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1614877155, now seen corresponding path program 2 times [2022-03-18 18:08:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:08:27,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345605119] [2022-03-18 18:08:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:08:27,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:08:27,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334177685] [2022-03-18 18:08:27,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 18:08:27,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:27,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:27,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:08:27,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 18:08:27,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 18:08:27,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 18:08:27,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 18:08:27,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:08:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 18:08:27,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:08:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 18:08:27,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:08:27,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345605119] [2022-03-18 18:08:27,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:08:27,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334177685] [2022-03-18 18:08:27,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334177685] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:08:27,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:08:27,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-03-18 18:08:27,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127382280] [2022-03-18 18:08:27,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:08:27,762 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 18:08:27,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:08:27,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 18:08:27,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-03-18 18:08:27,763 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 18:08:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:08:27,920 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2022-03-18 18:08:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 18:08:27,921 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 45 [2022-03-18 18:08:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:08:27,922 INFO L225 Difference]: With dead ends: 64 [2022-03-18 18:08:27,922 INFO L226 Difference]: Without dead ends: 64 [2022-03-18 18:08:27,922 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-03-18 18:08:27,923 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:08:27,923 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 18:08:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-18 18:08:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2022-03-18 18:08:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 9 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:08:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-03-18 18:08:27,931 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2022-03-18 18:08:27,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:08:27,932 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-03-18 18:08:27,932 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 18:08:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-03-18 18:08:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 18:08:27,933 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:08:27,933 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:08:27,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 18:08:28,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:28,140 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:08:28,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:08:28,140 INFO L85 PathProgramCache]: Analyzing trace with hash -574778181, now seen corresponding path program 3 times [2022-03-18 18:08:28,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:08:28,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722936325] [2022-03-18 18:08:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:08:28,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:08:28,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:08:28,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125406957] [2022-03-18 18:08:28,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 18:08:28,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:08:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:08:28,151 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:08:28,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 18:08:28,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-18 18:08:28,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 18:08:28,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-18 18:08:28,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:08:28,642 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:08:28,646 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:08:28,648 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:08:32,233 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_main_~X~0 1)) (.cse2 (+ (* (- 1) c_main_~Y~0) (div (+ c_main_~v~0 c_main_~X~0) 2) (* c_main_~X~0 c_main_~y~0))) (.cse0 (= c_main_~Y~0 0)) (.cse4 (= (mod (+ (* 2 c_main_~X~0 c_main_~y~0) c_main_~v~0 c_main_~X~0) 2) 0))) (or (let ((.cse1 (div .cse2 c_main_~Y~0))) (and (not .cse0) (not (<= .cse1 c_main_~X~0)) (= (mod .cse2 c_main_~Y~0) 0) (= c_main_~xy~0 (* c_main_~y~0 .cse1)) (<= .cse1 .cse3) (= c_main_~yx~0 (* c_main_~Y~0 .cse1)) .cse4)) (and (let ((.cse6 (= c_main_~y~0 0))) (or (let ((.cse5 (div c_main_~xy~0 c_main_~y~0))) (and (<= .cse5 .cse3) (= (mod c_main_~xy~0 c_main_~y~0) 0) (not .cse6) (< c_main_~X~0 .cse5))) (and .cse6 (= c_main_~xy~0 0)))) (= 0 .cse2) .cse0 (= c_main_~yx~0 0) .cse4))) is different from false [2022-03-18 18:11:07,803 WARN L232 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-18 18:13:13,499 WARN L232 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)