/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 23:11:00,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 23:11:00,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 23:11:00,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 23:11:00,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 23:11:00,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 23:11:00,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 23:11:00,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 23:11:00,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 23:11:00,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 23:11:00,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 23:11:00,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 23:11:00,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 23:11:00,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 23:11:00,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 23:11:00,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 23:11:00,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 23:11:00,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 23:11:00,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 23:11:00,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 23:11:00,715 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 23:11:00,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 23:11:00,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 23:11:00,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 23:11:00,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 23:11:00,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 23:11:00,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 23:11:00,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 23:11:00,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 23:11:00,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 23:11:00,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 23:11:00,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 23:11:00,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 23:11:00,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 23:11:00,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 23:11:00,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 23:11:00,760 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 23:11:00,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 23:11:00,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 23:11:00,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:11:00,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 23:11:00,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 23:11:00,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 23:11:00,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 23:11:00,763 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 23:11:00,763 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 23:11:00,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 23:11:01,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 23:11:01,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 23:11:01,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 23:11:01,012 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 23:11:01,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound5.c [2022-03-17 23:11:01,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68e2c29b/8ce6f54702754278b49184f54aa7d846/FLAGf1b8e6d15 [2022-03-17 23:11:01,424 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 23:11:01,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound5.c [2022-03-17 23:11:01,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68e2c29b/8ce6f54702754278b49184f54aa7d846/FLAGf1b8e6d15 [2022-03-17 23:11:01,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68e2c29b/8ce6f54702754278b49184f54aa7d846 [2022-03-17 23:11:01,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 23:11:01,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 23:11:01,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 23:11:01,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 23:11:01,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 23:11:01,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c1b29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01, skipping insertion in model container [2022-03-17 23:11:01,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 23:11:01,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 23:11:01,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2022-03-17 23:11:01,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:11:01,628 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 23:11:01,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2022-03-17 23:11:01,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:11:01,655 INFO L208 MainTranslator]: Completed translation [2022-03-17 23:11:01,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01 WrapperNode [2022-03-17 23:11:01,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 23:11:01,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 23:11:01,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 23:11:01,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 23:11:01,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 23:11:01,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 23:11:01,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 23:11:01,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 23:11:01,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:01,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:11:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:01,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 23:11:01,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 23:11:01,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 23:11:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 23:11:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 23:11:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 23:11:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 23:11:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 23:11:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 23:11:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 23:11:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 23:11:01,841 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 23:11:01,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 23:11:01,976 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 23:11:01,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 23:11:01,981 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 23:11:01,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:11:01 BoogieIcfgContainer [2022-03-17 23:11:01,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 23:11:01,983 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 23:11:01,983 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 23:11:01,986 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 23:11:02,001 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:11:01" (1/1) ... [2022-03-17 23:11:02,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:11:02 BasicIcfg [2022-03-17 23:11:02,013 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 23:11:02,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 23:11:02,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 23:11:02,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 23:11:02,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:11:01" (1/4) ... [2022-03-17 23:11:02,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be56d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:11:02, skipping insertion in model container [2022-03-17 23:11:02,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:11:01" (2/4) ... [2022-03-17 23:11:02,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be56d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:11:02, skipping insertion in model container [2022-03-17 23:11:02,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:11:01" (3/4) ... [2022-03-17 23:11:02,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be56d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:11:02, skipping insertion in model container [2022-03-17 23:11:02,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:11:02" (4/4) ... [2022-03-17 23:11:02,036 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.cqvasr [2022-03-17 23:11:02,040 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 23:11:02,040 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 23:11:02,098 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 23:11:02,102 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 23:11:02,103 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 23:11:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 23:11:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-17 23:11:02,136 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:02,136 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:02,136 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1187991702, now seen corresponding path program 1 times [2022-03-17 23:11:02,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556358680] [2022-03-17 23:11:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:02,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:11:02,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:11:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:11:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 23:11:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:11:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-17 23:11:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:11:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 23:11:02,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:02,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556358680] [2022-03-17 23:11:02,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556358680] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:11:02,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:11:02,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 23:11:02,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701035768] [2022-03-17 23:11:02,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:11:02,340 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 23:11:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 23:11:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 23:11:02,364 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-17 23:11:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:02,437 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-03-17 23:11:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 23:11:02,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-03-17 23:11:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:02,444 INFO L225 Difference]: With dead ends: 51 [2022-03-17 23:11:02,444 INFO L226 Difference]: Without dead ends: 24 [2022-03-17 23:11:02,446 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 23:11:02,449 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:02,450 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 23:11:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-17 23:11:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-03-17 23:11:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-17 23:11:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-03-17 23:11:02,473 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-03-17 23:11:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:02,473 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-03-17 23:11:02,474 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-17 23:11:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-03-17 23:11:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-17 23:11:02,475 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:02,475 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:02,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 23:11:02,475 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:02,476 INFO L85 PathProgramCache]: Analyzing trace with hash 793962506, now seen corresponding path program 1 times [2022-03-17 23:11:02,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:02,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564845414] [2022-03-17 23:11:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:02,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:02,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:02,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142594613] [2022-03-17 23:11:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:02,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:02,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:02,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:02,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 23:11:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:11:02,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 23:11:02,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 23:11:02,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 23:11:02,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:02,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564845414] [2022-03-17 23:11:02,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:02,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142594613] [2022-03-17 23:11:02,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142594613] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:11:02,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:11:02,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 23:11:02,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885547547] [2022-03-17 23:11:02,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:11:02,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 23:11:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 23:11:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:11:02,637 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:11:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:02,705 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-03-17 23:11:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 23:11:02,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-03-17 23:11:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:02,707 INFO L225 Difference]: With dead ends: 35 [2022-03-17 23:11:02,707 INFO L226 Difference]: Without dead ends: 31 [2022-03-17 23:11:02,708 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-17 23:11:02,709 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:02,709 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:11:02,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-17 23:11:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-03-17 23:11:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-17 23:11:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-03-17 23:11:02,725 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-03-17 23:11:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:02,726 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-03-17 23:11:02,726 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 23:11:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-03-17 23:11:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-17 23:11:02,727 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:02,727 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:02,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-17 23:11:02,943 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 [2022-03-17 23:11:02,944 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:02,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash -503871754, now seen corresponding path program 1 times [2022-03-17 23:11:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:02,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979292662] [2022-03-17 23:11:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:02,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:02,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386479467] [2022-03-17 23:11:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:02,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:02,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:02,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:02,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 23:11:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:11:03,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-17 23:11:03,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 23:11:03,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:11:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-17 23:11:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:24,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979292662] [2022-03-17 23:11:24,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:24,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386479467] [2022-03-17 23:11:24,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386479467] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-17 23:11:24,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:11:24,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-03-17 23:11:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516628652] [2022-03-17 23:11:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:11:24,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 23:11:24,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 23:11:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=28, Unknown=1, NotChecked=0, Total=42 [2022-03-17 23:11:24,212 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 23:11:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:24,254 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-03-17 23:11:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 23:11:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-03-17 23:11:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:24,255 INFO L225 Difference]: With dead ends: 37 [2022-03-17 23:11:24,255 INFO L226 Difference]: Without dead ends: 33 [2022-03-17 23:11:24,255 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2022-03-17 23:11:24,256 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:24,256 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 23:11:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-17 23:11:24,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-17 23:11:24,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-17 23:11:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-03-17 23:11:24,261 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-03-17 23:11:24,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:24,262 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-03-17 23:11:24,262 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 23:11:24,262 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-03-17 23:11:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 23:11:24,263 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:24,263 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:24,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-17 23:11:24,467 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 [2022-03-17 23:11:24,468 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1285656823, now seen corresponding path program 1 times [2022-03-17 23:11:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:24,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595614289] [2022-03-17 23:11:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:24,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:24,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:24,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435069698] [2022-03-17 23:11:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:24,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:24,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:24,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:24,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 23:11:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:11:24,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-17 23:11:24,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-17 23:11:24,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:11:24,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:24,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595614289] [2022-03-17 23:11:24,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:24,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435069698] [2022-03-17 23:11:24,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435069698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:11:24,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:11:24,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-03-17 23:11:24,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847521597] [2022-03-17 23:11:24,901 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 23:11:24,902 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 23:11:24,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 23:11:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-17 23:11:24,903 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-17 23:11:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:24,973 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-03-17 23:11:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 23:11:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-03-17 23:11:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:24,976 INFO L225 Difference]: With dead ends: 42 [2022-03-17 23:11:24,976 INFO L226 Difference]: Without dead ends: 36 [2022-03-17 23:11:24,977 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:11:24,979 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:24,980 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 155 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 23:11:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-17 23:11:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-17 23:11:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 23:11:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-03-17 23:11:24,997 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-03-17 23:11:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:24,997 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-03-17 23:11:24,997 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-17 23:11:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-03-17 23:11:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-17 23:11:24,998 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:24,998 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:25,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-17 23:11:25,199 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 [2022-03-17 23:11:25,199 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash -542323485, now seen corresponding path program 2 times [2022-03-17 23:11:25,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:25,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837943835] [2022-03-17 23:11:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:25,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:25,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932064019] [2022-03-17 23:11:25,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 23:11:25,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:25,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:25,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:25,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 23:11:25,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 23:11:25,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 23:11:25,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-17 23:11:25,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-17 23:11:25,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:11:30,065 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (* (- 18) c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) (.cse2 (* (- 2) c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) (.cse3 (* (- 119) c_main_~y~0 c_main_~y~0)) (.cse4 (* (- 65) c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0))) (or (let ((.cse0 (+ c_main_~y~0 1))) (= (* .cse0 c_main_~k~0) (* .cse0 .cse0))) (not (= (mod (+ .cse1 .cse2 .cse3 (* (- 120) c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse4) 12) 0)) (not (<= (+ (* 10 (* c_main_~y~0 c_main_~y~0)) (* 5 (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) c_main_~x~0 1) (div (+ .cse1 .cse2 .cse3 (- 12) .cse4) (- 12)))) (< (+ c_main_~c~0 1) c_main_~k~0) (not (< c_main_~c~0 c_main_~k~0)))) is different from false [2022-03-17 23:11:47,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:47,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837943835] [2022-03-17 23:11:47,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:47,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932064019] [2022-03-17 23:11:47,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932064019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:11:47,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:11:47,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-17 23:11:47,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372606933] [2022-03-17 23:11:47,704 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 23:11:47,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:11:47,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:11:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=190, Unknown=2, NotChecked=28, Total=272 [2022-03-17 23:11:47,706 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-03-17 23:11:47,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:47,835 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-03-17 23:11:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:11:47,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-03-17 23:11:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:47,836 INFO L225 Difference]: With dead ends: 45 [2022-03-17 23:11:47,836 INFO L226 Difference]: Without dead ends: 39 [2022-03-17 23:11:47,836 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=73, Invalid=271, Unknown=2, NotChecked=34, Total=380 [2022-03-17 23:11:47,837 INFO L912 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:47,837 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 197 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:11:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-17 23:11:47,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-03-17 23:11:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-17 23:11:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-03-17 23:11:47,842 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-03-17 23:11:47,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:47,843 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-03-17 23:11:47,843 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-03-17 23:11:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-03-17 23:11:47,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-17 23:11:47,844 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:47,844 INFO L500 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:47,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-17 23:11:48,044 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 [2022-03-17 23:11:48,045 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2094100617, now seen corresponding path program 3 times [2022-03-17 23:11:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:48,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250043919] [2022-03-17 23:11:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:48,052 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:48,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590969210] [2022-03-17 23:11:48,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-17 23:11:48,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:48,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:48,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:48,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-17 23:11:48,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-17 23:11:48,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 23:11:48,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-17 23:11:48,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-17 23:11:48,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:11:48,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:48,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250043919] [2022-03-17 23:11:48,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:48,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590969210] [2022-03-17 23:11:48,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590969210] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:11:48,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:11:48,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-03-17 23:11:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721201614] [2022-03-17 23:11:48,538 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 23:11:48,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 23:11:48,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:48,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 23:11:48,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-17 23:11:48,538 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-03-17 23:11:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:48,635 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-03-17 23:11:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 23:11:48,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 54 [2022-03-17 23:11:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:48,637 INFO L225 Difference]: With dead ends: 48 [2022-03-17 23:11:48,637 INFO L226 Difference]: Without dead ends: 42 [2022-03-17 23:11:48,638 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:11:48,638 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:48,638 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 239 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:11:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-17 23:11:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-17 23:11:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-17 23:11:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-03-17 23:11:48,643 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 54 [2022-03-17 23:11:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:48,643 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-03-17 23:11:48,644 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-03-17 23:11:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-03-17 23:11:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-17 23:11:48,644 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:48,644 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:48,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-17 23:11:48,845 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:48,845 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash -826507677, now seen corresponding path program 4 times [2022-03-17 23:11:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:48,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246745377] [2022-03-17 23:11:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:48,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:48,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:48,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072324057] [2022-03-17 23:11:48,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-17 23:11:48,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:48,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:48,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:48,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-17 23:11:48,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-17 23:11:48,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 23:11:48,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-17 23:11:48,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-17 23:11:49,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:11:49,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:49,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246745377] [2022-03-17 23:11:49,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:49,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072324057] [2022-03-17 23:11:49,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072324057] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:11:49,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:11:49,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-03-17 23:11:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892492370] [2022-03-17 23:11:49,236 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 23:11:49,238 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 23:11:49,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 23:11:49,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-17 23:11:49,238 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-03-17 23:11:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:49,360 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-03-17 23:11:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 23:11:49,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2022-03-17 23:11:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:49,363 INFO L225 Difference]: With dead ends: 51 [2022-03-17 23:11:49,363 INFO L226 Difference]: Without dead ends: 45 [2022-03-17 23:11:49,363 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-17 23:11:49,364 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:49,364 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 287 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:11:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-17 23:11:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-03-17 23:11:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 23:11:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-03-17 23:11:49,399 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 61 [2022-03-17 23:11:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:49,400 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-03-17 23:11:49,400 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-03-17 23:11:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-03-17 23:11:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 23:11:49,401 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:49,401 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:49,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-17 23:11:49,633 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:49,634 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash -170119689, now seen corresponding path program 5 times [2022-03-17 23:11:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56814088] [2022-03-17 23:11:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:49,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:49,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401974118] [2022-03-17 23:11:49,642 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-17 23:11:49,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:49,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:49,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:49,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-17 23:11:50,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-17 23:11:50,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 23:11:50,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-17 23:11:50,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-03-17 23:11:50,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:11:50,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:50,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56814088] [2022-03-17 23:11:50,483 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:50,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401974118] [2022-03-17 23:11:50,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401974118] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 23:11:50,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 23:11:50,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-17 23:11:50,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655506860] [2022-03-17 23:11:50,483 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 23:11:50,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 23:11:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 23:11:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-17 23:11:50,484 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-17 23:11:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:50,644 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2022-03-17 23:11:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 23:11:50,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 68 [2022-03-17 23:11:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:50,645 INFO L225 Difference]: With dead ends: 54 [2022-03-17 23:11:50,645 INFO L226 Difference]: Without dead ends: 48 [2022-03-17 23:11:50,645 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-17 23:11:50,646 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:50,646 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 339 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:11:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-17 23:11:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-03-17 23:11:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 13 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-17 23:11:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-03-17 23:11:50,652 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 68 [2022-03-17 23:11:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:50,652 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-03-17 23:11:50,652 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 8 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-17 23:11:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-03-17 23:11:50,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-17 23:11:50,653 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:11:50,653 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:11:50,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-17 23:11:50,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:50,854 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:11:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:11:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1505202147, now seen corresponding path program 6 times [2022-03-17 23:11:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:11:50,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380953272] [2022-03-17 23:11:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:11:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:11:50,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 23:11:50,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945108368] [2022-03-17 23:11:50,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-17 23:11:50,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 23:11:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:11:50,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 23:11:50,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-17 23:11:51,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-17 23:11:51,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 23:11:51,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-17 23:11:51,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 23:11:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-17 23:11:51,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 23:11:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-03-17 23:11:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:11:51,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380953272] [2022-03-17 23:11:51,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 23:11:51,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945108368] [2022-03-17 23:11:51,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945108368] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 23:11:51,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 23:11:51,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-03-17 23:11:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655104535] [2022-03-17 23:11:51,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 23:11:51,637 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 23:11:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:11:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 23:11:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-03-17 23:11:51,638 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2022-03-17 23:11:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:11:51,709 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-03-17 23:11:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 23:11:51,710 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) Word has length 75 [2022-03-17 23:11:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:11:51,710 INFO L225 Difference]: With dead ends: 54 [2022-03-17 23:11:51,710 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 23:11:51,710 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-17 23:11:51,711 INFO L912 BasicCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:11:51,711 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 236 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:11:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 23:11:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 23:11:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 23:11:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 23:11:51,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2022-03-17 23:11:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:11:51,713 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 23:11:51,713 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2022-03-17 23:11:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 23:11:51,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 23:11:51,715 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 23:11:51,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-17 23:11:51,920 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-17 23:11:51,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-17 23:11:52,485 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-17 23:11:52,485 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-17 23:11:52,485 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-17 23:11:52,485 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-17 23:11:52,485 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-17 23:11:52,485 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-17 23:11:52,485 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-17 23:11:52,485 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2022-03-17 23:11:52,485 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-17 23:11:52,485 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-03-17 23:11:52,485 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-03-17 23:11:52,485 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 17 42) the Hoare annotation is: true [2022-03-17 23:11:52,485 INFO L885 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-03-17 23:11:52,485 INFO L878 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= main_~k~0 5) (<= 0 main_~k~0)) [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L878 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 5)) (.cse1 (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0))))) (or (and .cse0 (<= 0 main_~k~0) .cse1 (= main_~c~0 0) (= main_~y~0 0)) (and (= main_~y~0 2) .cse0 (< 1 main_~k~0) (= main_~c~0 2) .cse1) (and .cse0 (= main_~y~0 1) .cse1 (< 0 main_~k~0) (= main_~c~0 1)) (and .cse0 (= main_~y~0 4) (= main_~c~0 4) (< 3 main_~k~0) .cse1) (and .cse0 (= main_~y~0 3) .cse1 (< 2 main_~k~0) (= main_~c~0 3)) (and (<= main_~c~0 5) .cse0 .cse1 (= 5 main_~y~0) (<= 5 main_~c~0) (< 4 main_~k~0)))) [2022-03-17 23:11:52,486 INFO L878 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse0 (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0))))) (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (= main_~y~0 2) (< 1 main_~k~0) (<= main_~k~0 2) (<= main_~c~0 2) .cse0) (and (<= main_~c~0 5) (<= main_~k~0 5) .cse0 (= 5 main_~y~0) (< 4 main_~k~0)) (and (<= main_~k~0 1) (= main_~y~0 1) .cse0 (< 0 main_~k~0) (<= main_~c~0 1)) (and (= main_~y~0 4) (< 3 main_~k~0) (<= main_~k~0 4) .cse0 (<= main_~c~0 4)) (and (<= main_~c~0 3) (= main_~y~0 3) (<= main_~k~0 3) .cse0 (< 2 main_~k~0)))) [2022-03-17 23:11:52,486 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 5)) (.cse1 (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0))))) (or (and .cse0 (<= 0 main_~k~0) .cse1 (= main_~c~0 0) (= main_~y~0 0)) (and (= main_~y~0 2) .cse0 (< 1 main_~k~0) (= main_~c~0 2) .cse1) (and .cse0 (= main_~y~0 1) .cse1 (< 0 main_~k~0) (= main_~c~0 1)) (and .cse0 (= main_~y~0 4) (= main_~c~0 4) (< 3 main_~k~0) .cse1) (and .cse0 (= main_~y~0 3) .cse1 (< 2 main_~k~0) (= main_~c~0 3)) (and (<= main_~c~0 5) .cse0 .cse1 (= 5 main_~y~0) (<= 5 main_~c~0) (< 4 main_~k~0)))) [2022-03-17 23:11:52,486 INFO L878 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0))))) (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (= main_~y~0 2) (< 1 main_~k~0) (<= main_~k~0 2) (<= main_~c~0 2) .cse0) (and (<= main_~c~0 5) (<= main_~k~0 5) .cse0 (= 5 main_~y~0) (< 4 main_~k~0)) (and (<= main_~k~0 1) (= main_~y~0 1) .cse0 (< 0 main_~k~0) (<= main_~c~0 1)) (and (= main_~y~0 4) (< 3 main_~k~0) (<= main_~k~0 4) .cse0 (<= main_~c~0 4)) (and (<= main_~c~0 3) (= main_~y~0 3) (<= main_~k~0 3) .cse0 (< 2 main_~k~0)))) [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 17 42) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 17 42) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-03-17 23:11:52,486 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-03-17 23:11:52,489 INFO L718 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2022-03-17 23:11:52,490 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 23:11:52,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:11:52 BasicIcfg [2022-03-17 23:11:52,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 23:11:52,513 INFO L158 Benchmark]: Toolchain (without parser) took 51071.79ms. Allocated memory was 181.4MB in the beginning and 223.3MB in the end (delta: 41.9MB). Free memory was 131.8MB in the beginning and 168.8MB in the end (delta: -37.1MB). Peak memory consumption was 98.0MB. Max. memory is 8.0GB. [2022-03-17 23:11:52,513 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 23:11:52,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.45ms. Allocated memory is still 181.4MB. Free memory was 131.5MB in the beginning and 158.8MB in the end (delta: -27.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-17 23:11:52,514 INFO L158 Benchmark]: Boogie Preprocessor took 18.71ms. Allocated memory is still 181.4MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 23:11:52,514 INFO L158 Benchmark]: RCFGBuilder took 306.06ms. Allocated memory is still 181.4MB. Free memory was 157.3MB in the beginning and 146.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-17 23:11:52,514 INFO L158 Benchmark]: IcfgTransformer took 30.73ms. Allocated memory is still 181.4MB. Free memory was 146.3MB in the beginning and 144.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 23:11:52,514 INFO L158 Benchmark]: TraceAbstraction took 50498.22ms. Allocated memory was 181.4MB in the beginning and 223.3MB in the end (delta: 41.9MB). Free memory was 144.2MB in the beginning and 168.8MB in the end (delta: -24.6MB). Peak memory consumption was 110.6MB. Max. memory is 8.0GB. [2022-03-17 23:11:52,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.45ms. Allocated memory is still 181.4MB. Free memory was 131.5MB in the beginning and 158.8MB in the end (delta: -27.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.71ms. Allocated memory is still 181.4MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 306.06ms. Allocated memory is still 181.4MB. Free memory was 157.3MB in the beginning and 146.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 30.73ms. Allocated memory is still 181.4MB. Free memory was 146.3MB in the beginning and 144.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 50498.22ms. Allocated memory was 181.4MB in the beginning and 223.3MB in the end (delta: 41.9MB). Free memory was 144.2MB in the beginning and 168.8MB in the end (delta: -24.6MB). Peak memory consumption was 110.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.4s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 1655 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1378 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 634 IncrementalHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 277 mSDtfsCounter, 634 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 613 GetRequests, 510 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 33.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=8, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 37 PreInvPairs, 62 NumberOfFragments, 1056 HoareAnnotationTreeSize, 37 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 170 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 45.5s InterpolantComputationTime, 418 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 511 ConstructedInterpolants, 0 QuantifiedInterpolants, 1804 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1049 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 695/809 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((k <= 5 && 0 <= k) && 2 * (y * y * y * y * y * y) + 6 * (y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y) && c == 0) && y == 0) || ((((y == 2 && k <= 5) && 1 < k) && c == 2) && 2 * (y * y * y * y * y * y) + 6 * (y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y)) || ((((k <= 5 && y == 1) && 2 * (y * y * y * y * y * y) + 6 * (y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y) && 0 < k) && c == 1)) || ((((k <= 5 && y == 4) && c == 4) && 3 < k) && 2 * (y * y * y * y * y * y) + 6 * (y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y)) || ((((k <= 5 && y == 3) && 2 * (y * y * y * y * y * y) + 6 * (y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y) && 2 < k) && c == 3)) || (((((c <= 5 && k <= 5) && 2 * (y * y * y * y * y * y) + 6 * (y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y) && 5 == y) && 5 <= c) && 4 < k) RESULT: Ultimate proved your program to be correct! [2022-03-17 23:11:52,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...