/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/divbin2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 18:03:10,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 18:03:10,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 18:03:10,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 18:03:10,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 18:03:10,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 18:03:10,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 18:03:10,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 18:03:10,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 18:03:10,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 18:03:10,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 18:03:10,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 18:03:10,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 18:03:10,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 18:03:10,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 18:03:10,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 18:03:10,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 18:03:10,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 18:03:10,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 18:03:10,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 18:03:10,762 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 18:03:10,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 18:03:10,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 18:03:10,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 18:03:10,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 18:03:10,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 18:03:10,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 18:03:10,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 18:03:10,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 18:03:10,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-07 18:03:10,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 18:03:10,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 18:03:10,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 18:03:10,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-07 18:03:10,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 18:03:10,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-07 18:03:10,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 18:03:10,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 18:03:10,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 18:03:10,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 18:03:10,816 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-07 18:03:10,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 18:03:10,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 18:03:10,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 18:03:10,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 18:03:10,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 18:03:10,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 18:03:10,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 18:03:10,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 18:03:10,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 18:03:10,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-07 18:03:10,828 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-07 18:03:10,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 18:03:11,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 18:03:11,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 18:03:11,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 18:03:11,261 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 18:03:11,262 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 18:03:11,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/divbin2.i [2022-04-07 18:03:11,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe52aacf5/4d19c270556f4238afcd597051bf928c/FLAGfc7bca4c2 [2022-04-07 18:03:11,970 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 18:03:11,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/divbin2.i [2022-04-07 18:03:11,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe52aacf5/4d19c270556f4238afcd597051bf928c/FLAGfc7bca4c2 [2022-04-07 18:03:12,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe52aacf5/4d19c270556f4238afcd597051bf928c [2022-04-07 18:03:12,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 18:03:12,366 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-07 18:03:12,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 18:03:12,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 18:03:12,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 18:03:12,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c694fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12, skipping insertion in model container [2022-04-07 18:03:12,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 18:03:12,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 18:03:12,744 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/divbin2.i[951,964] [2022-04-07 18:03:12,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 18:03:12,792 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 18:03:12,816 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/divbin2.i[951,964] [2022-04-07 18:03:12,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 18:03:12,855 INFO L208 MainTranslator]: Completed translation [2022-04-07 18:03:12,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12 WrapperNode [2022-04-07 18:03:12,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 18:03:12,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 18:03:12,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 18:03:12,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 18:03:12,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 18:03:12,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 18:03:12,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 18:03:12,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 18:03:12,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (1/1) ... [2022-04-07 18:03:12,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 18:03:12,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 18:03:13,012 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) [2022-04-07 18:03:13,045 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 [2022-04-07 18:03:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 18:03:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 18:03:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 18:03:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-07 18:03:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-07 18:03:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 18:03:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 18:03:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 18:03:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-07 18:03:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-07 18:03:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 18:03:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 18:03:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-07 18:03:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-07 18:03:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-07 18:03:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 18:03:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 18:03:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 18:03:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 18:03:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 18:03:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 18:03:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 18:03:13,231 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 18:03:13,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 18:03:13,449 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 18:03:13,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 18:03:13,455 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-07 18:03:13,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 06:03:13 BoogieIcfgContainer [2022-04-07 18:03:13,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 18:03:13,457 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-07 18:03:13,457 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-07 18:03:13,462 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-07 18:03:13,465 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 06:03:13" (1/1) ... [2022-04-07 18:03:13,466 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-07 18:03:13,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 06:03:13 BasicIcfg [2022-04-07 18:03:13,519 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-07 18:03:13,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 18:03:13,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 18:03:13,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 18:03:13,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 06:03:12" (1/4) ... [2022-04-07 18:03:13,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c20f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 06:03:13, skipping insertion in model container [2022-04-07 18:03:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 06:03:12" (2/4) ... [2022-04-07 18:03:13,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c20f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 06:03:13, skipping insertion in model container [2022-04-07 18:03:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 06:03:13" (3/4) ... [2022-04-07 18:03:13,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c20f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 06:03:13, skipping insertion in model container [2022-04-07 18:03:13,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 06:03:13" (4/4) ... [2022-04-07 18:03:13,526 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2.iJordan [2022-04-07 18:03:13,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-07 18:03:13,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 18:03:13,604 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 18:03:13,609 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 [2022-04-07 18:03:13,610 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 18:03:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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) [2022-04-07 18:03:13,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 18:03:13,635 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 18:03:13,636 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 18:03:13,636 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 18:03:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 18:03:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash -852214585, now seen corresponding path program 1 times [2022-04-07 18:03:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 18:03:13,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464360774] [2022-04-07 18:03:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 18:03:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 18:03:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:13,973 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {27#true} is VALID [2022-04-07 18:03:13,974 INFO L290 TraceCheckUtils]: 1: Hoare triple {27#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-07 18:03:13,974 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-07 18:03:13,976 INFO L272 TraceCheckUtils]: 0: Hoare triple {27#true} [83] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 18:03:13,976 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {27#true} is VALID [2022-04-07 18:03:13,977 INFO L290 TraceCheckUtils]: 2: Hoare triple {27#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-07 18:03:13,977 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {27#true} {27#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-07 18:03:13,977 INFO L272 TraceCheckUtils]: 4: Hoare triple {27#true} [84] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#true} is VALID [2022-04-07 18:03:13,978 INFO L290 TraceCheckUtils]: 5: Hoare triple {27#true} [87] mainENTRY-->L33-2: Formula: (and (= v_main_~B~0_3 1) (= v_main_~B~0_3 v_main_~b~0_5) (= v_main_~A~0_2 |v_main_#t~nondet1_2|) (= v_main_~q~0_4 0) (= v_main_~A~0_2 v_main_~r~0_2)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~q~0=v_main_~q~0_4, main_~B~0=v_main_~B~0_3, main_~b~0=v_main_~b~0_5, main_~A~0=v_main_~A~0_2, main_~r~0=v_main_~r~0_2} AuxVars[] AssignedVars[main_~q~0, main_#t~nondet1, main_~B~0, main_~b~0, main_~A~0, main_~r~0] {27#true} is VALID [2022-04-07 18:03:13,978 INFO L290 TraceCheckUtils]: 6: Hoare triple {27#true} [89] L33-2-->L42-2: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {28#false} is VALID [2022-04-07 18:03:13,979 INFO L290 TraceCheckUtils]: 7: Hoare triple {28#false} [92] L42-2-->L37-1: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {28#false} is VALID [2022-04-07 18:03:13,979 INFO L272 TraceCheckUtils]: 8: Hoare triple {28#false} [97] L37-1-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (mod v_main_~A~0_7 4294967296) (mod (+ v_main_~r~0_12 (* v_main_~q~0_11 v_main_~b~0_15)) 4294967296)) 1 0)) InVars {main_~q~0=v_main_~q~0_11, main_~A~0=v_main_~A~0_7, main_~b~0=v_main_~b~0_15, main_~r~0=v_main_~r~0_12} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {28#false} is VALID [2022-04-07 18:03:13,979 INFO L290 TraceCheckUtils]: 9: Hoare triple {28#false} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {28#false} is VALID [2022-04-07 18:03:13,980 INFO L290 TraceCheckUtils]: 10: Hoare triple {28#false} [104] L19-->L20: Formula: (= 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[] {28#false} is VALID [2022-04-07 18:03:13,980 INFO L290 TraceCheckUtils]: 11: Hoare triple {28#false} [108] L20-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {28#false} is VALID [2022-04-07 18:03:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 18:03:13,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 18:03:13,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464360774] [2022-04-07 18:03:13,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464360774] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 18:03:13,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 18:03:13,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 18:03:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900487299] [2022-04-07 18:03:13,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 18:03:13,988 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 [2022-04-07 18:03:13,990 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 18:03:13,993 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) [2022-04-07 18:03:14,023 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:14,024 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 18:03:14,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 18:03:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 18:03:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 18:03:14,065 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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) [2022-04-07 18:03:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:14,183 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-04-07 18:03:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 18:03:14,184 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 [2022-04-07 18:03:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 18:03:14,186 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) [2022-04-07 18:03:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-07 18:03:14,197 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) [2022-04-07 18:03:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-07 18:03:14,200 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 32 transitions. [2022-04-07 18:03:14,399 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:14,406 INFO L225 Difference]: With dead ends: 24 [2022-04-07 18:03:14,406 INFO L226 Difference]: Without dead ends: 19 [2022-04-07 18:03:14,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 18:03:14,410 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 18:03:14,411 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 18:03:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-07 18:03:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-07 18:03:14,475 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 18:03:14,476 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-04-07 18:03:14,477 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-04-07 18:03:14,478 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-04-07 18:03:14,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:14,494 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-04-07 18:03:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-04-07 18:03:14,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:14,494 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:14,495 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 19 states. [2022-04-07 18:03:14,495 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 19 states. [2022-04-07 18:03:14,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:14,497 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-04-07 18:03:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-04-07 18:03:14,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:14,498 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:14,498 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 18:03:14,498 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 18:03:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-04-07 18:03:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-04-07 18:03:14,513 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2022-04-07 18:03:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 18:03:14,514 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-04-07 18:03:14,514 INFO L479 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) [2022-04-07 18:03:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-04-07 18:03:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-07 18:03:14,515 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 18:03:14,515 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 18:03:14,515 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 18:03:14,515 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 18:03:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 18:03:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1209212451, now seen corresponding path program 1 times [2022-04-07 18:03:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 18:03:14,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467223950] [2022-04-07 18:03:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 18:03:14,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 18:03:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693478258] [2022-04-07 18:03:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:14,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:14,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 18:03:14,583 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) [2022-04-07 18:03:14,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 18:03:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:14,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-07 18:03:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:14,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 18:03:15,126 INFO L272 TraceCheckUtils]: 0: Hoare triple {116#true} [83] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {116#true} is VALID [2022-04-07 18:03:15,127 INFO L290 TraceCheckUtils]: 1: Hoare triple {116#true} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {116#true} is VALID [2022-04-07 18:03:15,127 INFO L290 TraceCheckUtils]: 2: Hoare triple {116#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {116#true} is VALID [2022-04-07 18:03:15,127 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {116#true} {116#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {116#true} is VALID [2022-04-07 18:03:15,127 INFO L272 TraceCheckUtils]: 4: Hoare triple {116#true} [84] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {116#true} is VALID [2022-04-07 18:03:15,128 INFO L290 TraceCheckUtils]: 5: Hoare triple {116#true} [87] mainENTRY-->L33-2: Formula: (and (= v_main_~B~0_3 1) (= v_main_~B~0_3 v_main_~b~0_5) (= v_main_~A~0_2 |v_main_#t~nondet1_2|) (= v_main_~q~0_4 0) (= v_main_~A~0_2 v_main_~r~0_2)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~q~0=v_main_~q~0_4, main_~B~0=v_main_~B~0_3, main_~b~0=v_main_~b~0_5, main_~A~0=v_main_~A~0_2, main_~r~0=v_main_~r~0_2} AuxVars[] AssignedVars[main_~q~0, main_#t~nondet1, main_~B~0, main_~b~0, main_~A~0, main_~r~0] {136#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-07 18:03:15,129 INFO L290 TraceCheckUtils]: 6: Hoare triple {136#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {136#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-07 18:03:15,129 INFO L290 TraceCheckUtils]: 7: Hoare triple {136#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} [95] L34-->L42-2: Formula: (not (<= (mod v_main_~b~0_11 4294967296) (mod v_main_~r~0_9 4294967296))) InVars {main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} OutVars{main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} AuxVars[] AssignedVars[] {143#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-07 18:03:15,130 INFO L290 TraceCheckUtils]: 8: Hoare triple {143#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} [94] L42-2-->L38: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {143#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-07 18:03:15,131 INFO L272 TraceCheckUtils]: 9: Hoare triple {143#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} [98] L38-->__VERIFIER_assertENTRY: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {150#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 18:03:15,132 INFO L290 TraceCheckUtils]: 10: Hoare triple {150#(<= 1 |__VERIFIER_assert_#in~cond|)} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {154#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 18:03:15,132 INFO L290 TraceCheckUtils]: 11: Hoare triple {154#(<= 1 __VERIFIER_assert_~cond)} [104] L19-->L20: Formula: (= 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[] {117#false} is VALID [2022-04-07 18:03:15,132 INFO L290 TraceCheckUtils]: 12: Hoare triple {117#false} [108] L20-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#false} is VALID [2022-04-07 18:03:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 18:03:15,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 18:03:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 18:03:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467223950] [2022-04-07 18:03:15,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 18:03:15,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693478258] [2022-04-07 18:03:15,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693478258] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 18:03:15,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 18:03:15,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 18:03:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377470696] [2022-04-07 18:03:15,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 18:03:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 13 [2022-04-07 18:03:15,136 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 18:03:15,136 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-04-07 18:03:15,164 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:15,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 18:03:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 18:03:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 18:03:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-07 18:03:15,165 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-04-07 18:03:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:15,329 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-04-07 18:03:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 18:03:15,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 13 [2022-04-07 18:03:15,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 18:03:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-04-07 18:03:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 35 transitions. [2022-04-07 18:03:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-04-07 18:03:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 35 transitions. [2022-04-07 18:03:15,349 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 35 transitions. [2022-04-07 18:03:15,411 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:15,416 INFO L225 Difference]: With dead ends: 29 [2022-04-07 18:03:15,416 INFO L226 Difference]: Without dead ends: 28 [2022-04-07 18:03:15,416 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-07 18:03:15,419 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 18:03:15,419 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 18:03:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-04-07 18:03:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-04-07 18:03:15,442 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 18:03:15,444 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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) [2022-04-07 18:03:15,444 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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) [2022-04-07 18:03:15,444 INFO L87 Difference]: Start difference. First operand 28 states. Second operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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) [2022-04-07 18:03:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:15,447 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-04-07 18:03:15,447 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-04-07 18:03:15,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:15,448 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:15,449 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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 28 states. [2022-04-07 18:03:15,449 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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 28 states. [2022-04-07 18:03:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:15,454 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-04-07 18:03:15,454 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-04-07 18:03:15,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:15,454 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:15,455 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 18:03:15,455 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 18:03:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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) [2022-04-07 18:03:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-04-07 18:03:15,460 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2022-04-07 18:03:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 18:03:15,461 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-04-07 18:03:15,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-04-07 18:03:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-04-07 18:03:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-07 18:03:15,462 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 18:03:15,462 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 18:03:15,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-07 18:03:15,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:15,684 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 18:03:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 18:03:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1400683102, now seen corresponding path program 1 times [2022-04-07 18:03:15,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 18:03:15,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851339085] [2022-04-07 18:03:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 18:03:15,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 18:03:15,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575202190] [2022-04-07 18:03:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:15,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:15,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 18:03:15,735 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) [2022-04-07 18:03:15,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 18:03:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:15,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-07 18:03:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:15,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 18:03:16,274 INFO L272 TraceCheckUtils]: 0: Hoare triple {275#true} [83] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:16,274 INFO L290 TraceCheckUtils]: 1: Hoare triple {275#true} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {275#true} is VALID [2022-04-07 18:03:16,275 INFO L290 TraceCheckUtils]: 2: Hoare triple {275#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:16,275 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {275#true} {275#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:16,275 INFO L272 TraceCheckUtils]: 4: Hoare triple {275#true} [84] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:16,276 INFO L290 TraceCheckUtils]: 5: Hoare triple {275#true} [87] mainENTRY-->L33-2: Formula: (and (= v_main_~B~0_3 1) (= v_main_~B~0_3 v_main_~b~0_5) (= v_main_~A~0_2 |v_main_#t~nondet1_2|) (= v_main_~q~0_4 0) (= v_main_~A~0_2 v_main_~r~0_2)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~q~0=v_main_~q~0_4, main_~B~0=v_main_~B~0_3, main_~b~0=v_main_~b~0_5, main_~A~0=v_main_~A~0_2, main_~r~0=v_main_~r~0_2} AuxVars[] AssignedVars[main_~q~0, main_#t~nondet1, main_~B~0, main_~b~0, main_~A~0, main_~r~0] {295#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-07 18:03:16,276 INFO L290 TraceCheckUtils]: 6: Hoare triple {295#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {295#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-07 18:03:16,277 INFO L290 TraceCheckUtils]: 7: Hoare triple {295#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} [96] L34-->L33-2: Formula: (and (= (* 2 v_main_~b~0_13) v_main_~b~0_12) (<= (mod v_main_~b~0_13 4294967296) (mod v_main_~r~0_10 4294967296))) InVars {main_~b~0=v_main_~b~0_13, main_~r~0=v_main_~r~0_10} OutVars{main_~b~0=v_main_~b~0_12, main_~r~0=v_main_~r~0_10} AuxVars[] AssignedVars[main_~b~0] {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} is VALID [2022-04-07 18:03:16,277 INFO L290 TraceCheckUtils]: 8: Hoare triple {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} is VALID [2022-04-07 18:03:16,278 INFO L290 TraceCheckUtils]: 9: Hoare triple {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} [95] L34-->L42-2: Formula: (not (<= (mod v_main_~b~0_11 4294967296) (mod v_main_~r~0_9 4294967296))) InVars {main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} OutVars{main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} AuxVars[] AssignedVars[] {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} is VALID [2022-04-07 18:03:16,278 INFO L290 TraceCheckUtils]: 10: Hoare triple {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} [94] L42-2-->L38: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} is VALID [2022-04-07 18:03:16,279 INFO L272 TraceCheckUtils]: 11: Hoare triple {302#(and (= main_~A~0 main_~r~0) (<= 1 (mod main_~r~0 4294967296)) (= main_~q~0 0))} [98] L38-->__VERIFIER_assertENTRY: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {315#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 18:03:16,280 INFO L290 TraceCheckUtils]: 12: Hoare triple {315#(<= 1 |__VERIFIER_assert_#in~cond|)} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {319#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 18:03:16,281 INFO L290 TraceCheckUtils]: 13: Hoare triple {319#(<= 1 __VERIFIER_assert_~cond)} [104] L19-->L20: Formula: (= 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[] {276#false} is VALID [2022-04-07 18:03:16,281 INFO L290 TraceCheckUtils]: 14: Hoare triple {276#false} [108] L20-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {276#false} is VALID [2022-04-07 18:03:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 18:03:16,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-07 18:03:16,986 INFO L290 TraceCheckUtils]: 14: Hoare triple {276#false} [108] L20-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {276#false} is VALID [2022-04-07 18:03:16,987 INFO L290 TraceCheckUtils]: 13: Hoare triple {319#(<= 1 __VERIFIER_assert_~cond)} [104] L19-->L20: Formula: (= 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[] {276#false} is VALID [2022-04-07 18:03:16,988 INFO L290 TraceCheckUtils]: 12: Hoare triple {315#(<= 1 |__VERIFIER_assert_#in~cond|)} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {319#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 18:03:19,008 WARN L272 TraceCheckUtils]: 11: Hoare triple {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} [98] L38-->__VERIFIER_assertENTRY: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {315#(<= 1 |__VERIFIER_assert_#in~cond|)} is UNKNOWN [2022-04-07 18:03:19,016 INFO L290 TraceCheckUtils]: 10: Hoare triple {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} [94] L42-2-->L38: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} is VALID [2022-04-07 18:03:19,023 INFO L290 TraceCheckUtils]: 9: Hoare triple {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} [95] L34-->L42-2: Formula: (not (<= (mod v_main_~b~0_11 4294967296) (mod v_main_~r~0_9 4294967296))) InVars {main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} OutVars{main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} AuxVars[] AssignedVars[] {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} is VALID [2022-04-07 18:03:19,031 INFO L290 TraceCheckUtils]: 8: Hoare triple {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} is VALID [2022-04-07 18:03:19,043 INFO L290 TraceCheckUtils]: 7: Hoare triple {348#(or (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))))} [96] L34-->L33-2: Formula: (and (= (* 2 v_main_~b~0_13) v_main_~b~0_12) (<= (mod v_main_~b~0_13 4294967296) (mod v_main_~r~0_10 4294967296))) InVars {main_~b~0=v_main_~b~0_13, main_~r~0=v_main_~r~0_10} OutVars{main_~b~0=v_main_~b~0_12, main_~r~0=v_main_~r~0_10} AuxVars[] AssignedVars[main_~b~0] {335#(forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296)))} is VALID [2022-04-07 18:03:19,051 INFO L290 TraceCheckUtils]: 6: Hoare triple {348#(or (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))))} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {348#(or (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))))} is VALID [2022-04-07 18:03:19,059 INFO L290 TraceCheckUtils]: 5: Hoare triple {275#true} [87] mainENTRY-->L33-2: Formula: (and (= v_main_~B~0_3 1) (= v_main_~B~0_3 v_main_~b~0_5) (= v_main_~A~0_2 |v_main_#t~nondet1_2|) (= v_main_~q~0_4 0) (= v_main_~A~0_2 v_main_~r~0_2)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~q~0=v_main_~q~0_4, main_~B~0=v_main_~B~0_3, main_~b~0=v_main_~b~0_5, main_~A~0=v_main_~A~0_2, main_~r~0=v_main_~r~0_2} AuxVars[] AssignedVars[main_~q~0, main_#t~nondet1, main_~B~0, main_~b~0, main_~A~0, main_~r~0] {348#(or (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (forall ((main_~b~0 Int)) (= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))))} is VALID [2022-04-07 18:03:19,060 INFO L272 TraceCheckUtils]: 4: Hoare triple {275#true} [84] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:19,060 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {275#true} {275#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:19,060 INFO L290 TraceCheckUtils]: 2: Hoare triple {275#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:19,060 INFO L290 TraceCheckUtils]: 1: Hoare triple {275#true} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {275#true} is VALID [2022-04-07 18:03:19,060 INFO L272 TraceCheckUtils]: 0: Hoare triple {275#true} [83] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {275#true} is VALID [2022-04-07 18:03:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 18:03:19,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 18:03:19,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851339085] [2022-04-07 18:03:19,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 18:03:19,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575202190] [2022-04-07 18:03:19,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575202190] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-07 18:03:19,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 18:03:19,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-04-07 18:03:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793433615] [2022-04-07 18:03:19,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 18:03:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 15 [2022-04-07 18:03:19,062 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 18:03:19,062 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-04-07 18:03:21,208 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 14 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:21,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 18:03:21,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 18:03:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 18:03:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-04-07 18:03:21,210 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-04-07 18:03:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:23,346 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-07 18:03:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 18:03:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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 15 [2022-04-07 18:03:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 18:03:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-04-07 18:03:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-07 18:03:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-04-07 18:03:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-07 18:03:23,350 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 32 transitions. [2022-04-07 18:03:24,041 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:24,042 INFO L225 Difference]: With dead ends: 34 [2022-04-07 18:03:24,042 INFO L226 Difference]: Without dead ends: 34 [2022-04-07 18:03:24,043 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-07 18:03:24,044 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 18:03:24,044 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 90 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-04-07 18:03:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-07 18:03:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-07 18:03:24,048 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 18:03:24,048 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-07 18:03:24,048 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-07 18:03:24,048 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-07 18:03:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:24,050 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-07 18:03:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-07 18:03:24,056 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:24,057 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:24,057 INFO L74 IsIncluded]: Start isIncluded. First operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-07 18:03:24,058 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-07 18:03:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:24,065 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-07 18:03:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-07 18:03:24,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:24,066 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:24,066 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 18:03:24,066 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 18:03:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-07 18:03:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-04-07 18:03:24,068 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 15 [2022-04-07 18:03:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 18:03:24,069 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-04-07 18:03:24,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-04-07 18:03:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-04-07 18:03:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-07 18:03:24,070 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 18:03:24,070 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 18:03:24,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-07 18:03:24,296 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,SelfDestructingSolverStorable2 [2022-04-07 18:03:24,297 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 18:03:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 18:03:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash 307306426, now seen corresponding path program 1 times [2022-04-07 18:03:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 18:03:24,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103864638] [2022-04-07 18:03:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:24,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 18:03:24,314 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 18:03:24,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442810008] [2022-04-07 18:03:24,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:24,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:24,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 18:03:24,316 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) [2022-04-07 18:03:24,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 18:03:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:24,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 18:03:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:24,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 18:03:24,591 INFO L272 TraceCheckUtils]: 0: Hoare triple {510#true} [83] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,592 INFO L290 TraceCheckUtils]: 1: Hoare triple {510#true} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {510#true} is VALID [2022-04-07 18:03:24,592 INFO L290 TraceCheckUtils]: 2: Hoare triple {510#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,592 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {510#true} {510#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,592 INFO L272 TraceCheckUtils]: 4: Hoare triple {510#true} [84] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,592 INFO L290 TraceCheckUtils]: 5: Hoare triple {510#true} [87] mainENTRY-->L33-2: Formula: (and (= v_main_~B~0_3 1) (= v_main_~B~0_3 v_main_~b~0_5) (= v_main_~A~0_2 |v_main_#t~nondet1_2|) (= v_main_~q~0_4 0) (= v_main_~A~0_2 v_main_~r~0_2)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~q~0=v_main_~q~0_4, main_~B~0=v_main_~B~0_3, main_~b~0=v_main_~b~0_5, main_~A~0=v_main_~A~0_2, main_~r~0=v_main_~r~0_2} AuxVars[] AssignedVars[main_~q~0, main_#t~nondet1, main_~B~0, main_~b~0, main_~A~0, main_~r~0] {510#true} is VALID [2022-04-07 18:03:24,593 INFO L290 TraceCheckUtils]: 6: Hoare triple {510#true} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,593 INFO L290 TraceCheckUtils]: 7: Hoare triple {510#true} [96] L34-->L33-2: Formula: (and (= (* 2 v_main_~b~0_13) v_main_~b~0_12) (<= (mod v_main_~b~0_13 4294967296) (mod v_main_~r~0_10 4294967296))) InVars {main_~b~0=v_main_~b~0_13, main_~r~0=v_main_~r~0_10} OutVars{main_~b~0=v_main_~b~0_12, main_~r~0=v_main_~r~0_10} AuxVars[] AssignedVars[main_~b~0] {510#true} is VALID [2022-04-07 18:03:24,593 INFO L290 TraceCheckUtils]: 8: Hoare triple {510#true} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,593 INFO L290 TraceCheckUtils]: 9: Hoare triple {510#true} [95] L34-->L42-2: Formula: (not (<= (mod v_main_~b~0_11 4294967296) (mod v_main_~r~0_9 4294967296))) InVars {main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} OutVars{main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,593 INFO L290 TraceCheckUtils]: 10: Hoare triple {510#true} [94] L42-2-->L38: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:24,594 INFO L272 TraceCheckUtils]: 11: Hoare triple {510#true} [98] L38-->__VERIFIER_assertENTRY: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {510#true} is VALID [2022-04-07 18:03:24,594 INFO L290 TraceCheckUtils]: 12: Hoare triple {510#true} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {551#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-07 18:03:24,595 INFO L290 TraceCheckUtils]: 13: Hoare triple {551#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} [105] L19-->L19-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {555#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-07 18:03:24,595 INFO L290 TraceCheckUtils]: 14: Hoare triple {555#(not (= |__VERIFIER_assert_#in~cond| 0))} [110] L19-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {555#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-07 18:03:24,596 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {555#(not (= |__VERIFIER_assert_#in~cond| 0))} {510#true} [113] __VERIFIER_assertEXIT-->L38-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} is VALID [2022-04-07 18:03:24,597 INFO L290 TraceCheckUtils]: 16: Hoare triple {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} [101] L38-1-->L37-1: Formula: (= (mod v_main_~B~0_1 4294967296) (mod v_main_~b~0_2 4294967296)) InVars {main_~b~0=v_main_~b~0_2, main_~B~0=v_main_~B~0_1} OutVars{main_~b~0=v_main_~b~0_2, main_~B~0=v_main_~B~0_1} AuxVars[] AssignedVars[] {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} is VALID [2022-04-07 18:03:24,598 INFO L272 TraceCheckUtils]: 17: Hoare triple {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} [97] L37-1-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (mod v_main_~A~0_7 4294967296) (mod (+ v_main_~r~0_12 (* v_main_~q~0_11 v_main_~b~0_15)) 4294967296)) 1 0)) InVars {main_~q~0=v_main_~q~0_11, main_~A~0=v_main_~A~0_7, main_~b~0=v_main_~b~0_15, main_~r~0=v_main_~r~0_12} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {569#(= |__VERIFIER_assert_#in~cond| 1)} is VALID [2022-04-07 18:03:24,599 INFO L290 TraceCheckUtils]: 18: Hoare triple {569#(= |__VERIFIER_assert_#in~cond| 1)} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {573#(= __VERIFIER_assert_~cond 1)} is VALID [2022-04-07 18:03:24,599 INFO L290 TraceCheckUtils]: 19: Hoare triple {573#(= __VERIFIER_assert_~cond 1)} [104] L19-->L20: Formula: (= 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[] {511#false} is VALID [2022-04-07 18:03:24,600 INFO L290 TraceCheckUtils]: 20: Hoare triple {511#false} [108] L20-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {511#false} is VALID [2022-04-07 18:03:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 18:03:24,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-07 18:03:25,839 INFO L290 TraceCheckUtils]: 20: Hoare triple {511#false} [108] L20-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {511#false} is VALID [2022-04-07 18:03:25,840 INFO L290 TraceCheckUtils]: 19: Hoare triple {583#(not (= __VERIFIER_assert_~cond 0))} [104] L19-->L20: Formula: (= 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[] {511#false} is VALID [2022-04-07 18:03:25,841 INFO L290 TraceCheckUtils]: 18: Hoare triple {555#(not (= |__VERIFIER_assert_#in~cond| 0))} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {583#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-07 18:03:25,843 INFO L272 TraceCheckUtils]: 17: Hoare triple {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} [97] L37-1-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (mod v_main_~A~0_7 4294967296) (mod (+ v_main_~r~0_12 (* v_main_~q~0_11 v_main_~b~0_15)) 4294967296)) 1 0)) InVars {main_~q~0=v_main_~q~0_11, main_~A~0=v_main_~A~0_7, main_~b~0=v_main_~b~0_15, main_~r~0=v_main_~r~0_12} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {555#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-07 18:03:25,851 INFO L290 TraceCheckUtils]: 16: Hoare triple {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} [101] L38-1-->L37-1: Formula: (= (mod v_main_~B~0_1 4294967296) (mod v_main_~b~0_2 4294967296)) InVars {main_~b~0=v_main_~b~0_2, main_~B~0=v_main_~B~0_1} OutVars{main_~b~0=v_main_~b~0_2, main_~B~0=v_main_~B~0_1} AuxVars[] AssignedVars[] {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} is VALID [2022-04-07 18:03:25,853 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {555#(not (= |__VERIFIER_assert_#in~cond| 0))} {510#true} [113] __VERIFIER_assertEXIT-->L38-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {562#(= (mod main_~A~0 4294967296) (mod (+ main_~r~0 (* main_~b~0 main_~q~0)) 4294967296))} is VALID [2022-04-07 18:03:25,853 INFO L290 TraceCheckUtils]: 14: Hoare triple {555#(not (= |__VERIFIER_assert_#in~cond| 0))} [110] L19-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {555#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-07 18:03:25,862 INFO L290 TraceCheckUtils]: 13: Hoare triple {605#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} [105] L19-->L19-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {555#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-07 18:03:25,863 INFO L290 TraceCheckUtils]: 12: Hoare triple {510#true} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {605#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-07 18:03:25,863 INFO L272 TraceCheckUtils]: 11: Hoare triple {510#true} [98] L38-->__VERIFIER_assertENTRY: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {510#true} is VALID [2022-04-07 18:03:25,863 INFO L290 TraceCheckUtils]: 10: Hoare triple {510#true} [94] L42-2-->L38: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,863 INFO L290 TraceCheckUtils]: 9: Hoare triple {510#true} [95] L34-->L42-2: Formula: (not (<= (mod v_main_~b~0_11 4294967296) (mod v_main_~r~0_9 4294967296))) InVars {main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} OutVars{main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,864 INFO L290 TraceCheckUtils]: 8: Hoare triple {510#true} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,864 INFO L290 TraceCheckUtils]: 7: Hoare triple {510#true} [96] L34-->L33-2: Formula: (and (= (* 2 v_main_~b~0_13) v_main_~b~0_12) (<= (mod v_main_~b~0_13 4294967296) (mod v_main_~r~0_10 4294967296))) InVars {main_~b~0=v_main_~b~0_13, main_~r~0=v_main_~r~0_10} OutVars{main_~b~0=v_main_~b~0_12, main_~r~0=v_main_~r~0_10} AuxVars[] AssignedVars[main_~b~0] {510#true} is VALID [2022-04-07 18:03:25,865 INFO L290 TraceCheckUtils]: 6: Hoare triple {510#true} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,865 INFO L290 TraceCheckUtils]: 5: Hoare triple {510#true} [87] mainENTRY-->L33-2: Formula: (and (= v_main_~B~0_3 1) (= v_main_~B~0_3 v_main_~b~0_5) (= v_main_~A~0_2 |v_main_#t~nondet1_2|) (= v_main_~q~0_4 0) (= v_main_~A~0_2 v_main_~r~0_2)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~q~0=v_main_~q~0_4, main_~B~0=v_main_~B~0_3, main_~b~0=v_main_~b~0_5, main_~A~0=v_main_~A~0_2, main_~r~0=v_main_~r~0_2} AuxVars[] AssignedVars[main_~q~0, main_#t~nondet1, main_~B~0, main_~b~0, main_~A~0, main_~r~0] {510#true} is VALID [2022-04-07 18:03:25,865 INFO L272 TraceCheckUtils]: 4: Hoare triple {510#true} [84] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,865 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {510#true} {510#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,865 INFO L290 TraceCheckUtils]: 2: Hoare triple {510#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,865 INFO L290 TraceCheckUtils]: 1: Hoare triple {510#true} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {510#true} is VALID [2022-04-07 18:03:25,866 INFO L272 TraceCheckUtils]: 0: Hoare triple {510#true} [83] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {510#true} is VALID [2022-04-07 18:03:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 18:03:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 18:03:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103864638] [2022-04-07 18:03:25,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 18:03:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442810008] [2022-04-07 18:03:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442810008] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-07 18:03:25,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-07 18:03:25,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-04-07 18:03:25,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331755709] [2022-04-07 18:03:25,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-07 18:03:25,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-04-07 18:03:25,868 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 18:03:25,868 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-07 18:03:25,899 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:25,900 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 18:03:25,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 18:03:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 18:03:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-07 18:03:25,906 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-07 18:03:28,727 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 [] [2022-04-07 18:03:30,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-07 18:03:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:31,012 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-07 18:03:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 18:03:31,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-04-07 18:03:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 18:03:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-07 18:03:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2022-04-07 18:03:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-07 18:03:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2022-04-07 18:03:31,016 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 32 transitions. [2022-04-07 18:03:31,050 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:31,051 INFO L225 Difference]: With dead ends: 38 [2022-04-07 18:03:31,051 INFO L226 Difference]: Without dead ends: 33 [2022-04-07 18:03:31,052 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-04-07 18:03:31,053 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-04-07 18:03:31,053 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 78 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-04-07 18:03:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-07 18:03:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2022-04-07 18:03:31,056 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 18:03:31,056 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,056 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,056 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:31,058 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-04-07 18:03:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-07 18:03:31,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:31,059 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:31,059 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 33 states. [2022-04-07 18:03:31,059 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 33 states. [2022-04-07 18:03:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:31,061 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-04-07 18:03:31,061 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-07 18:03:31,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:31,061 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:31,061 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 18:03:31,061 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 18:03:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-04-07 18:03:31,062 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2022-04-07 18:03:31,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 18:03:31,063 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-04-07 18:03:31,063 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-07 18:03:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-04-07 18:03:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-07 18:03:31,063 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 18:03:31,064 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 18:03:31,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 18:03:31,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:31,280 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 18:03:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 18:03:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1801492333, now seen corresponding path program 1 times [2022-04-07 18:03:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 18:03:31,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317633170] [2022-04-07 18:03:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:31,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 18:03:31,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 18:03:31,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640619306] [2022-04-07 18:03:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:31,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 18:03:31,326 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) [2022-04-07 18:03:31,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-07 18:03:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:31,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 18:03:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 18:03:31,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 18:03:31,747 INFO L272 TraceCheckUtils]: 0: Hoare triple {776#true} [83] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {776#true} is VALID [2022-04-07 18:03:31,747 INFO L290 TraceCheckUtils]: 1: Hoare triple {776#true} [85] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 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) (= (select |v_#length_1| 2) 10) (= (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{#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[#NULL.offset, #NULL.base] {776#true} is VALID [2022-04-07 18:03:31,747 INFO L290 TraceCheckUtils]: 2: Hoare triple {776#true} [88] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {776#true} is VALID [2022-04-07 18:03:31,748 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {776#true} {776#true} [111] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {776#true} is VALID [2022-04-07 18:03:31,748 INFO L272 TraceCheckUtils]: 4: Hoare triple {776#true} [84] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {776#true} is VALID [2022-04-07 18:03:31,749 INFO L290 TraceCheckUtils]: 5: Hoare triple {776#true} [87] mainENTRY-->L33-2: Formula: (and (= v_main_~B~0_3 1) (= v_main_~B~0_3 v_main_~b~0_5) (= v_main_~A~0_2 |v_main_#t~nondet1_2|) (= v_main_~q~0_4 0) (= v_main_~A~0_2 v_main_~r~0_2)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|} OutVars{main_~q~0=v_main_~q~0_4, main_~B~0=v_main_~B~0_3, main_~b~0=v_main_~b~0_5, main_~A~0=v_main_~A~0_2, main_~r~0=v_main_~r~0_2} AuxVars[] AssignedVars[main_~q~0, main_#t~nondet1, main_~B~0, main_~b~0, main_~A~0, main_~r~0] {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-07 18:03:31,749 INFO L290 TraceCheckUtils]: 6: Hoare triple {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} [91] L33-2-->L34: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-07 18:03:31,750 INFO L290 TraceCheckUtils]: 7: Hoare triple {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} [95] L34-->L42-2: Formula: (not (<= (mod v_main_~b~0_11 4294967296) (mod v_main_~r~0_9 4294967296))) InVars {main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} OutVars{main_~b~0=v_main_~b~0_11, main_~r~0=v_main_~r~0_9} AuxVars[] AssignedVars[] {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-07 18:03:31,750 INFO L290 TraceCheckUtils]: 8: Hoare triple {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} [94] L42-2-->L38: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-07 18:03:31,750 INFO L272 TraceCheckUtils]: 9: Hoare triple {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} [98] L38-->__VERIFIER_assertENTRY: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {776#true} is VALID [2022-04-07 18:03:31,751 INFO L290 TraceCheckUtils]: 10: Hoare triple {776#true} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {776#true} is VALID [2022-04-07 18:03:31,751 INFO L290 TraceCheckUtils]: 11: Hoare triple {776#true} [105] L19-->L19-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {776#true} is VALID [2022-04-07 18:03:31,751 INFO L290 TraceCheckUtils]: 12: Hoare triple {776#true} [110] L19-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {776#true} is VALID [2022-04-07 18:03:31,754 INFO L284 TraceCheckUtils]: 13: Hoare quadruple {776#true} {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} [113] __VERIFIER_assertEXIT-->L38-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-07 18:03:31,756 INFO L290 TraceCheckUtils]: 14: Hoare triple {796#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} [102] L38-1-->L42: Formula: (let ((.cse0 (mod v_main_~b~0_4 4294967296))) (and (not (= .cse0 (mod v_main_~B~0_2 4294967296))) (= v_main_~q~0_2 (* v_main_~q~0_3 2)) (= v_main_~b~0_3 (div .cse0 2)))) InVars {main_~q~0=v_main_~q~0_3, main_~B~0=v_main_~B~0_2, main_~b~0=v_main_~b~0_4} OutVars{main_~q~0=v_main_~q~0_2, main_~B~0=v_main_~B~0_2, main_~b~0=v_main_~b~0_3} AuxVars[] AssignedVars[main_~q~0, main_~b~0] {777#false} is VALID [2022-04-07 18:03:31,756 INFO L290 TraceCheckUtils]: 15: Hoare triple {777#false} [106] L42-->L42-2: Formula: (and (<= (mod v_main_~b~0_8 4294967296) (mod v_main_~r~0_6 4294967296)) (= v_main_~q~0_7 (+ v_main_~q~0_8 1)) (= (+ (* (- 1) v_main_~b~0_8) v_main_~r~0_6) v_main_~r~0_5)) InVars {main_~q~0=v_main_~q~0_8, main_~b~0=v_main_~b~0_8, main_~r~0=v_main_~r~0_6} OutVars{main_~q~0=v_main_~q~0_7, main_~b~0=v_main_~b~0_8, main_~r~0=v_main_~r~0_5} AuxVars[] AssignedVars[main_~q~0, main_~r~0] {777#false} is VALID [2022-04-07 18:03:31,756 INFO L290 TraceCheckUtils]: 16: Hoare triple {777#false} [94] L42-2-->L38: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {777#false} is VALID [2022-04-07 18:03:31,756 INFO L272 TraceCheckUtils]: 17: Hoare triple {777#false} [98] L38-->__VERIFIER_assertENTRY: Formula: (= (ite (= (mod v_main_~A~0_6 4294967296) (mod (+ v_main_~r~0_11 (* v_main_~q~0_10 v_main_~b~0_14)) 4294967296)) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~q~0=v_main_~q~0_10, main_~A~0=v_main_~A~0_6, main_~b~0=v_main_~b~0_14, main_~r~0=v_main_~r~0_11} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[main_~q~0, __VERIFIER_assert_#in~cond, main_~A~0, main_~b~0, main_~r~0] {777#false} is VALID [2022-04-07 18:03:31,757 INFO L290 TraceCheckUtils]: 18: Hoare triple {777#false} [100] __VERIFIER_assertENTRY-->L19: Formula: (= v___VERIFIER_assert_~cond_1 |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_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {777#false} is VALID [2022-04-07 18:03:31,757 INFO L290 TraceCheckUtils]: 19: Hoare triple {777#false} [104] L19-->L20: Formula: (= 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[] {777#false} is VALID [2022-04-07 18:03:31,757 INFO L290 TraceCheckUtils]: 20: Hoare triple {777#false} [108] L20-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {777#false} is VALID [2022-04-07 18:03:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 18:03:31,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 18:03:31,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 18:03:31,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317633170] [2022-04-07 18:03:31,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 18:03:31,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640619306] [2022-04-07 18:03:31,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640619306] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 18:03:31,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 18:03:31,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 18:03:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950970593] [2022-04-07 18:03:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 18:03:31,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-04-07 18:03:31,759 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 18:03:31,759 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 18:03:31,790 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:31,790 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 18:03:31,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 18:03:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 18:03:31,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 18:03:31,791 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 18:03:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:31,847 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-04-07 18:03:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 18:03:31,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-04-07 18:03:31,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 18:03:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 18:03:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2022-04-07 18:03:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 18:03:31,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2022-04-07 18:03:31,851 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 27 transitions. [2022-04-07 18:03:31,886 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 18:03:31,887 INFO L225 Difference]: With dead ends: 29 [2022-04-07 18:03:31,887 INFO L226 Difference]: Without dead ends: 26 [2022-04-07 18:03:31,888 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 18:03:31,888 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 18:03:31,889 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 18:03:31,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-07 18:03:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-07 18:03:31,891 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 18:03:31,892 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,892 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,892 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:31,899 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-07 18:03:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-04-07 18:03:31,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:31,900 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:31,900 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 26 states. [2022-04-07 18:03:31,900 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 26 states. [2022-04-07 18:03:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 18:03:31,902 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-07 18:03:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-04-07 18:03:31,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 18:03:31,902 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 18:03:31,902 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 18:03:31,902 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 18:03:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 18:03:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-04-07 18:03:31,904 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2022-04-07 18:03:31,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 18:03:31,904 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-04-07 18:03:31,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 18:03:31,904 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-04-07 18:03:31,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-07 18:03:31,905 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 18:03:31,905 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 18:03:31,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-07 18:03:32,105 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:32,107 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 18:03:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 18:03:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash 108173774, now seen corresponding path program 1 times [2022-04-07 18:03:32,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 18:03:32,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545913619] [2022-04-07 18:03:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 18:03:32,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 18:03:32,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171164193] [2022-04-07 18:03:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 18:03:32,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 18:03:32,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 18:03:32,193 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) [2022-04-07 18:03:32,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process