/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 00:08:30,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 00:08:30,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 00:08:30,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-28 00:08:30,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-28 00:08:30,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-28 00:08:30,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-28 00:08:30,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-28 00:08:30,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-28 00:08:30,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-28 00:08:30,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-28 00:08:30,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-28 00:08:30,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 00:08:30,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 00:08:30,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 00:08:30,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 00:08:30,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 00:08:30,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 00:08:30,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 00:08:30,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 00:08:30,766 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 00:08:30,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 00:08:30,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 00:08:30,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 00:08:30,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 00:08:30,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 00:08:30,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 00:08:30,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 00:08:30,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 00:08:30,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-28 00:08:30,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 00:08:30,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 00:08:30,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-28 00:08:30,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-28 00:08:30,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-28 00:08:30,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-28 00:08:30,805 INFO L138 SettingsManager]: * Use SBE=true [2022-04-28 00:08:30,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 00:08:30,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 00:08:30,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 00:08:30,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 00:08:30,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 00:08:30,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 00:08:30,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-28 00:08:30,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-28 00:08:30,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-28 00:08:30,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-28 00:08:30,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 00:08:30,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-28 00:08:30,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-28 00:08:30,809 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-28 00:08:30,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 00:08:31,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 00:08:31,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 00:08:31,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 00:08:31,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 00:08:31,037 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 00:08:31,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound1.c [2022-04-28 00:08:31,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7338b153c/5042690096524bc58938ebc6c24b0436/FLAG489c67186 [2022-04-28 00:08:31,388 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 00:08:31,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound1.c [2022-04-28 00:08:31,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7338b153c/5042690096524bc58938ebc6c24b0436/FLAG489c67186 [2022-04-28 00:08:31,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7338b153c/5042690096524bc58938ebc6c24b0436 [2022-04-28 00:08:31,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 00:08:31,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-28 00:08:31,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 00:08:31,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 00:08:31,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 00:08:31,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:08:31" (1/1) ... [2022-04-28 00:08:31,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218abec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:31, skipping insertion in model container [2022-04-28 00:08:31,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:08:31" (1/1) ... [2022-04-28 00:08:31,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 00:08:31,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 00:08:31,967 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/fermat2-ll_unwindbound1.c[524,537] [2022-04-28 00:08:31,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 00:08:31,991 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 00:08:31,999 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/fermat2-ll_unwindbound1.c[524,537] [2022-04-28 00:08:32,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 00:08:32,014 INFO L208 MainTranslator]: Completed translation [2022-04-28 00:08:32,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32 WrapperNode [2022-04-28 00:08:32,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 00:08:32,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 00:08:32,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 00:08:32,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 00:08:32,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 00:08:32,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 00:08:32,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 00:08:32,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 00:08:32,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 00:08:32,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 00:08:32,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-28 00:08:32,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-28 00:08:32,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 00:08:32,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 00:08:32,106 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 00:08:32,106 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 00:08:32,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 00:08:32,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 00:08:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 00:08:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 00:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 00:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 00:08:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 00:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 00:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 00:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 00:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 00:08:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 00:08:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 00:08:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 00:08:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 00:08:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 00:08:32,162 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 00:08:32,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 00:08:32,366 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 00:08:32,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 00:08:32,371 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 00:08:32,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:08:32 BoogieIcfgContainer [2022-04-28 00:08:32,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 00:08:32,373 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-28 00:08:32,373 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-28 00:08:32,374 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-28 00:08:32,377 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:08:32" (1/1) ... [2022-04-28 00:08:32,380 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-28 00:08:32,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.04 12:08:32 BasicIcfg [2022-04-28 00:08:32,417 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-28 00:08:32,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 00:08:32,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 00:08:32,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 00:08:32,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 12:08:31" (1/4) ... [2022-04-28 00:08:32,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262c730d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:08:32, skipping insertion in model container [2022-04-28 00:08:32,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:08:32" (2/4) ... [2022-04-28 00:08:32,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262c730d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:08:32, skipping insertion in model container [2022-04-28 00:08:32,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:08:32" (3/4) ... [2022-04-28 00:08:32,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262c730d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 12:08:32, skipping insertion in model container [2022-04-28 00:08:32,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.04 12:08:32" (4/4) ... [2022-04-28 00:08:32,425 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound1.cqvasr [2022-04-28 00:08:32,435 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-28 00:08:32,435 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 00:08:32,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 00:08:32,486 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@691a330e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f6bb47 [2022-04-28 00:08:32,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 00:08:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 00:08:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-28 00:08:32,502 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 00:08:32,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 00:08:32,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 00:08:32,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 00:08:32,510 INFO L85 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2022-04-28 00:08:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 00:08:32,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900564936] [2022-04-28 00:08:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:32,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 00:08:32,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 00:08:32,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483566763] [2022-04-28 00:08:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:32,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:32,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 00:08:32,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 00:08:32,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 00:08:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:32,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-28 00:08:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:32,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 00:08:32,797 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} [70] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 00:08:32,797 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} [72] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 13) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {33#true} is VALID [2022-04-28 00:08:32,798 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} [75] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 00:08:32,798 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} [101] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 00:08:32,798 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} [71] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {33#true} is VALID [2022-04-28 00:08:32,798 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} [74] mainENTRY-->L26: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~R~0_1 |v_main_#t~nondet5_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~A~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_4, main_~A~0=v_main_~A~0_2, main_~R~0=v_main_~R~0_1, main_~u~0=v_main_~u~0_4, main_~r~0=v_main_~r~0_5} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~A~0, main_~R~0, main_~u~0, main_~r~0] {33#true} is VALID [2022-04-28 00:08:32,798 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} [76] L26-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {33#true} is VALID [2022-04-28 00:08:32,799 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {33#true} is VALID [2022-04-28 00:08:32,812 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} [80] L9-->L9-2: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 00:08:32,812 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 00:08:32,812 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} [102] assume_abort_if_notEXIT-->L26-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {34#false} is VALID [2022-04-28 00:08:32,813 INFO L272 TraceCheckUtils]: 11: Hoare triple {34#false} [77] L26-1-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {34#false} is VALID [2022-04-28 00:08:32,813 INFO L290 TraceCheckUtils]: 12: Hoare triple {34#false} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {34#false} is VALID [2022-04-28 00:08:32,813 INFO L290 TraceCheckUtils]: 13: Hoare triple {34#false} [80] L9-->L9-2: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 00:08:32,813 INFO L290 TraceCheckUtils]: 14: Hoare triple {34#false} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 00:08:32,813 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {34#false} {34#false} [103] assume_abort_if_notEXIT-->L28: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {34#false} is VALID [2022-04-28 00:08:32,814 INFO L290 TraceCheckUtils]: 16: Hoare triple {34#false} [79] L28-->L38-2: Formula: (and (= v_main_~u~0_5 (+ (* v_main_~R~0_5 2) 1)) (= v_main_~v~0_5 1) (= v_main_~r~0_6 (+ (* v_main_~R~0_5 v_main_~R~0_5) (* (- 1) v_main_~A~0_7)))) InVars {main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5} OutVars{main_~v~0=v_main_~v~0_5, main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5, main_~u~0=v_main_~u~0_5, main_~r~0=v_main_~r~0_6} AuxVars[] AssignedVars[main_~v~0, main_~u~0, main_~r~0] {34#false} is VALID [2022-04-28 00:08:32,814 INFO L290 TraceCheckUtils]: 17: Hoare triple {34#false} [82] L38-2-->L34-3: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 00:08:32,814 INFO L272 TraceCheckUtils]: 18: Hoare triple {34#false} [85] L34-3-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 2) v_main_~u~0_8) (* v_main_~v~0_8 2) (* v_main_~u~0_8 v_main_~u~0_8) (* (- 1) (* v_main_~v~0_8 v_main_~v~0_8))) (* v_main_~A~0_12 4)) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~v~0=v_main_~v~0_8, main_~A~0=v_main_~A~0_12, main_~u~0=v_main_~u~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0] {34#false} is VALID [2022-04-28 00:08:32,814 INFO L290 TraceCheckUtils]: 19: Hoare triple {34#false} [89] __VERIFIER_assertENTRY-->L12: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {34#false} is VALID [2022-04-28 00:08:32,815 INFO L290 TraceCheckUtils]: 20: Hoare triple {34#false} [92] L12-->L13: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 00:08:32,815 INFO L290 TraceCheckUtils]: 21: Hoare triple {34#false} [96] L13-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {34#false} is VALID [2022-04-28 00:08:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 00:08:32,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 00:08:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 00:08:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900564936] [2022-04-28 00:08:32,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 00:08:32,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483566763] [2022-04-28 00:08:32,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483566763] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 00:08:32,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 00:08:32,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-28 00:08:32,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934673212] [2022-04-28 00:08:32,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 00:08:32,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 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 [2022-04-28 00:08:32,826 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 00:08:32,828 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:32,864 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:32,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-28 00:08:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 00:08:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-28 00:08:32,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-28 00:08:32,899 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:32,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:32,972 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2022-04-28 00:08:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-28 00:08:32,973 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 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 [2022-04-28 00:08:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 00:08:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2022-04-28 00:08:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2022-04-28 00:08:32,990 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 2 states and 70 transitions. [2022-04-28 00:08:33,095 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:33,101 INFO L225 Difference]: With dead ends: 53 [2022-04-28 00:08:33,101 INFO L226 Difference]: Without dead ends: 25 [2022-04-28 00:08:33,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-28 00:08:33,105 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 00:08:33,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 00:08:33,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-28 00:08:33,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-28 00:08:33,131 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 00:08:33,133 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,135 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,136 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:33,143 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-04-28 00:08:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-04-28 00:08:33,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:33,144 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:33,144 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 25 states. [2022-04-28 00:08:33,145 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 25 states. [2022-04-28 00:08:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:33,149 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-04-28 00:08:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-04-28 00:08:33,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:33,149 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:33,149 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 00:08:33,162 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 00:08:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-04-28 00:08:33,190 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-04-28 00:08:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 00:08:33,190 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-04-28 00:08:33,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-04-28 00:08:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 00:08:33,191 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 00:08:33,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 00:08:33,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 00:08:33,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-28 00:08:33,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 00:08:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 00:08:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2022-04-28 00:08:33,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 00:08:33,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145186089] [2022-04-28 00:08:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 00:08:33,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 00:08:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782772224] [2022-04-28 00:08:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:33,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:33,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 00:08:33,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 00:08:33,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 00:08:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:33,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 00:08:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:33,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 00:08:33,682 INFO L272 TraceCheckUtils]: 0: Hoare triple {256#true} [70] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {256#true} is VALID [2022-04-28 00:08:33,683 INFO L290 TraceCheckUtils]: 1: Hoare triple {256#true} [72] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 13) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,684 INFO L290 TraceCheckUtils]: 2: Hoare triple {264#(<= ~counter~0 0)} [75] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,684 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {264#(<= ~counter~0 0)} {256#true} [101] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,685 INFO L272 TraceCheckUtils]: 4: Hoare triple {264#(<= ~counter~0 0)} [71] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,686 INFO L290 TraceCheckUtils]: 5: Hoare triple {264#(<= ~counter~0 0)} [74] mainENTRY-->L26: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~R~0_1 |v_main_#t~nondet5_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~A~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_4, main_~A~0=v_main_~A~0_2, main_~R~0=v_main_~R~0_1, main_~u~0=v_main_~u~0_4, main_~r~0=v_main_~r~0_5} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~A~0, main_~R~0, main_~u~0, main_~r~0] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,686 INFO L272 TraceCheckUtils]: 6: Hoare triple {264#(<= ~counter~0 0)} [76] L26-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,687 INFO L290 TraceCheckUtils]: 7: Hoare triple {264#(<= ~counter~0 0)} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,687 INFO L290 TraceCheckUtils]: 8: Hoare triple {264#(<= ~counter~0 0)} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,688 INFO L290 TraceCheckUtils]: 9: Hoare triple {264#(<= ~counter~0 0)} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,689 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {264#(<= ~counter~0 0)} {264#(<= ~counter~0 0)} [102] assume_abort_if_notEXIT-->L26-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,690 INFO L272 TraceCheckUtils]: 11: Hoare triple {264#(<= ~counter~0 0)} [77] L26-1-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,690 INFO L290 TraceCheckUtils]: 12: Hoare triple {264#(<= ~counter~0 0)} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,691 INFO L290 TraceCheckUtils]: 13: Hoare triple {264#(<= ~counter~0 0)} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,691 INFO L290 TraceCheckUtils]: 14: Hoare triple {264#(<= ~counter~0 0)} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,692 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {264#(<= ~counter~0 0)} {264#(<= ~counter~0 0)} [103] assume_abort_if_notEXIT-->L28: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,692 INFO L290 TraceCheckUtils]: 16: Hoare triple {264#(<= ~counter~0 0)} [79] L28-->L38-2: Formula: (and (= v_main_~u~0_5 (+ (* v_main_~R~0_5 2) 1)) (= v_main_~v~0_5 1) (= v_main_~r~0_6 (+ (* v_main_~R~0_5 v_main_~R~0_5) (* (- 1) v_main_~A~0_7)))) InVars {main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5} OutVars{main_~v~0=v_main_~v~0_5, main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5, main_~u~0=v_main_~u~0_5, main_~r~0=v_main_~r~0_6} AuxVars[] AssignedVars[main_~v~0, main_~u~0, main_~r~0] {264#(<= ~counter~0 0)} is VALID [2022-04-28 00:08:33,693 INFO L290 TraceCheckUtils]: 17: Hoare triple {264#(<= ~counter~0 0)} [83] L38-2-->L34-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {313#(<= |main_#t~post6| 0)} is VALID [2022-04-28 00:08:33,693 INFO L290 TraceCheckUtils]: 18: Hoare triple {313#(<= |main_#t~post6| 0)} [86] L34-1-->L34-3: Formula: (not (< |v_main_#t~post6_3| 1)) InVars {main_#t~post6=|v_main_#t~post6_3|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {257#false} is VALID [2022-04-28 00:08:33,694 INFO L272 TraceCheckUtils]: 19: Hoare triple {257#false} [85] L34-3-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 2) v_main_~u~0_8) (* v_main_~v~0_8 2) (* v_main_~u~0_8 v_main_~u~0_8) (* (- 1) (* v_main_~v~0_8 v_main_~v~0_8))) (* v_main_~A~0_12 4)) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~v~0=v_main_~v~0_8, main_~A~0=v_main_~A~0_12, main_~u~0=v_main_~u~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0] {257#false} is VALID [2022-04-28 00:08:33,694 INFO L290 TraceCheckUtils]: 20: Hoare triple {257#false} [89] __VERIFIER_assertENTRY-->L12: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {257#false} is VALID [2022-04-28 00:08:33,694 INFO L290 TraceCheckUtils]: 21: Hoare triple {257#false} [92] L12-->L13: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {257#false} is VALID [2022-04-28 00:08:33,694 INFO L290 TraceCheckUtils]: 22: Hoare triple {257#false} [96] L13-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {257#false} is VALID [2022-04-28 00:08:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 00:08:33,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 00:08:33,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 00:08:33,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145186089] [2022-04-28 00:08:33,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 00:08:33,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782772224] [2022-04-28 00:08:33,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782772224] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 00:08:33,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 00:08:33,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 00:08:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428717941] [2022-04-28 00:08:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 00:08:33,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 00:08:33,697 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 00:08:33,698 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:33,715 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:33,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 00:08:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 00:08:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 00:08:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 00:08:33,717 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:33,780 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-28 00:08:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 00:08:33,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 00:08:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 00:08:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 00:08:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 00:08:33,783 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-28 00:08:33,812 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:33,813 INFO L225 Difference]: With dead ends: 34 [2022-04-28 00:08:33,813 INFO L226 Difference]: Without dead ends: 27 [2022-04-28 00:08:33,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 00:08:33,814 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 00:08:33,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 00:08:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-28 00:08:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-28 00:08:33,822 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 00:08:33,823 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,823 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,824 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:33,827 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 00:08:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 00:08:33,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:33,828 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:33,828 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 27 states. [2022-04-28 00:08:33,829 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 27 states. [2022-04-28 00:08:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:33,832 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-28 00:08:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 00:08:33,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:33,833 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:33,833 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 00:08:33,833 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 00:08:33,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-04-28 00:08:33,838 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2022-04-28 00:08:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 00:08:33,839 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-04-28 00:08:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 00:08:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-28 00:08:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 00:08:33,843 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 00:08:33,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 00:08:33,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 00:08:34,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-28 00:08:34,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 00:08:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 00:08:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2022-04-28 00:08:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 00:08:34,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288853519] [2022-04-28 00:08:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:34,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 00:08:34,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 00:08:34,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338592737] [2022-04-28 00:08:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:34,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:34,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 00:08:34,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 00:08:34,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 00:08:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:34,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-28 00:08:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:34,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 00:08:42,970 INFO L272 TraceCheckUtils]: 0: Hoare triple {469#true} [70] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,971 INFO L290 TraceCheckUtils]: 1: Hoare triple {469#true} [72] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 13) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {469#true} is VALID [2022-04-28 00:08:42,971 INFO L290 TraceCheckUtils]: 2: Hoare triple {469#true} [75] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,971 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {469#true} {469#true} [101] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,971 INFO L272 TraceCheckUtils]: 4: Hoare triple {469#true} [71] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,972 INFO L290 TraceCheckUtils]: 5: Hoare triple {469#true} [74] mainENTRY-->L26: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~R~0_1 |v_main_#t~nondet5_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~A~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_4, main_~A~0=v_main_~A~0_2, main_~R~0=v_main_~R~0_1, main_~u~0=v_main_~u~0_4, main_~r~0=v_main_~r~0_5} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~A~0, main_~R~0, main_~u~0, main_~r~0] {469#true} is VALID [2022-04-28 00:08:42,972 INFO L272 TraceCheckUtils]: 6: Hoare triple {469#true} [76] L26-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {469#true} is VALID [2022-04-28 00:08:42,972 INFO L290 TraceCheckUtils]: 7: Hoare triple {469#true} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {469#true} is VALID [2022-04-28 00:08:42,972 INFO L290 TraceCheckUtils]: 8: Hoare triple {469#true} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,972 INFO L290 TraceCheckUtils]: 9: Hoare triple {469#true} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,972 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {469#true} {469#true} [102] assume_abort_if_notEXIT-->L26-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {469#true} is VALID [2022-04-28 00:08:42,973 INFO L272 TraceCheckUtils]: 11: Hoare triple {469#true} [77] L26-1-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {469#true} is VALID [2022-04-28 00:08:42,973 INFO L290 TraceCheckUtils]: 12: Hoare triple {469#true} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {469#true} is VALID [2022-04-28 00:08:42,973 INFO L290 TraceCheckUtils]: 13: Hoare triple {469#true} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,973 INFO L290 TraceCheckUtils]: 14: Hoare triple {469#true} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {469#true} is VALID [2022-04-28 00:08:42,973 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {469#true} {469#true} [103] assume_abort_if_notEXIT-->L28: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {469#true} is VALID [2022-04-28 00:08:43,639 INFO L290 TraceCheckUtils]: 16: Hoare triple {469#true} [79] L28-->L38-2: Formula: (and (= v_main_~u~0_5 (+ (* v_main_~R~0_5 2) 1)) (= v_main_~v~0_5 1) (= v_main_~r~0_6 (+ (* v_main_~R~0_5 v_main_~R~0_5) (* (- 1) v_main_~A~0_7)))) InVars {main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5} OutVars{main_~v~0=v_main_~v~0_5, main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5, main_~u~0=v_main_~u~0_5, main_~r~0=v_main_~r~0_6} AuxVars[] AssignedVars[main_~v~0, main_~u~0, main_~r~0] {522#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} is VALID [2022-04-28 00:08:43,640 INFO L290 TraceCheckUtils]: 17: Hoare triple {522#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} [83] L38-2-->L34-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {522#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} is VALID [2022-04-28 00:08:43,641 INFO L290 TraceCheckUtils]: 18: Hoare triple {522#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} [87] L34-1-->L35: Formula: (< |v_main_#t~post6_5| 1) InVars {main_#t~post6=|v_main_#t~post6_5|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {522#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} is VALID [2022-04-28 00:08:44,078 INFO L272 TraceCheckUtils]: 19: Hoare triple {522#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} [90] L35-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* v_main_~r~0_10 4) (* v_main_~A~0_11 4)) (+ (* v_main_~u~0_7 v_main_~u~0_7) (* (- 1) (* v_main_~v~0_7 v_main_~v~0_7)) (* (- 2) v_main_~u~0_7) (* v_main_~v~0_7 2))) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~v~0=v_main_~v~0_7, main_~A~0=v_main_~A~0_11, main_~u~0=v_main_~u~0_7, main_~r~0=v_main_~r~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0, main_~r~0] {532#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 00:08:44,079 INFO L290 TraceCheckUtils]: 20: Hoare triple {532#(<= 1 |__VERIFIER_assert_#in~cond|)} [89] __VERIFIER_assertENTRY-->L12: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {536#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 00:08:44,079 INFO L290 TraceCheckUtils]: 21: Hoare triple {536#(<= 1 __VERIFIER_assert_~cond)} [92] L12-->L13: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {470#false} is VALID [2022-04-28 00:08:44,079 INFO L290 TraceCheckUtils]: 22: Hoare triple {470#false} [96] L13-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {470#false} is VALID [2022-04-28 00:08:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 00:08:44,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 00:08:44,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 00:08:44,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288853519] [2022-04-28 00:08:44,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 00:08:44,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338592737] [2022-04-28 00:08:44,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338592737] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 00:08:44,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 00:08:44,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 00:08:44,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686064146] [2022-04-28 00:08:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 00:08:44,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 23 [2022-04-28 00:08:44,081 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 00:08:44,081 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 00:08:46,210 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 00:08:46,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 00:08:46,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 00:08:46,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2022-04-28 00:08:46,211 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 00:08:47,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 00:08:49,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 00:08:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:50,012 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-04-28 00:08:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 00:08:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 23 [2022-04-28 00:08:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 00:08:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 00:08:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-28 00:08:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 00:08:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-04-28 00:08:50,015 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 43 transitions. [2022-04-28 00:08:54,060 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 41 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:54,062 INFO L225 Difference]: With dead ends: 37 [2022-04-28 00:08:54,062 INFO L226 Difference]: Without dead ends: 35 [2022-04-28 00:08:54,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2022-04-28 00:08:54,063 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-04-28 00:08:54,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 82 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-04-28 00:08:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-28 00:08:54,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-04-28 00:08:54,078 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 00:08:54,078 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 00:08:54,078 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 00:08:54,078 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 00:08:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:54,081 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-28 00:08:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-28 00:08:54,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:54,081 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:54,082 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 35 states. [2022-04-28 00:08:54,082 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 35 states. [2022-04-28 00:08:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:54,084 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-28 00:08:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-28 00:08:54,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:54,085 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:54,085 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 00:08:54,085 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 00:08:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 00:08:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-04-28 00:08:54,087 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-04-28 00:08:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 00:08:54,087 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-04-28 00:08:54,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-04-28 00:08:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-04-28 00:08:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-28 00:08:54,088 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 00:08:54,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 00:08:54,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-28 00:08:54,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:54,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 00:08:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 00:08:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2022-04-28 00:08:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 00:08:54,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520546701] [2022-04-28 00:08:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:54,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 00:08:54,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 00:08:54,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789561674] [2022-04-28 00:08:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:54,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:54,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 00:08:54,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 00:08:54,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 00:08:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:54,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-28 00:08:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 00:08:54,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 00:08:54,535 INFO L272 TraceCheckUtils]: 0: Hoare triple {712#true} [70] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,535 INFO L290 TraceCheckUtils]: 1: Hoare triple {712#true} [72] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 13) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {712#true} is VALID [2022-04-28 00:08:54,535 INFO L290 TraceCheckUtils]: 2: Hoare triple {712#true} [75] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,536 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {712#true} {712#true} [101] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,536 INFO L272 TraceCheckUtils]: 4: Hoare triple {712#true} [71] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,536 INFO L290 TraceCheckUtils]: 5: Hoare triple {712#true} [74] mainENTRY-->L26: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~R~0_1 |v_main_#t~nondet5_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~A~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_4, main_~A~0=v_main_~A~0_2, main_~R~0=v_main_~R~0_1, main_~u~0=v_main_~u~0_4, main_~r~0=v_main_~r~0_5} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~A~0, main_~R~0, main_~u~0, main_~r~0] {712#true} is VALID [2022-04-28 00:08:54,536 INFO L272 TraceCheckUtils]: 6: Hoare triple {712#true} [76] L26-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {712#true} is VALID [2022-04-28 00:08:54,537 INFO L290 TraceCheckUtils]: 7: Hoare triple {712#true} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {712#true} is VALID [2022-04-28 00:08:54,537 INFO L290 TraceCheckUtils]: 8: Hoare triple {712#true} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,537 INFO L290 TraceCheckUtils]: 9: Hoare triple {712#true} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,537 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {712#true} {712#true} [102] assume_abort_if_notEXIT-->L26-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {712#true} is VALID [2022-04-28 00:08:54,537 INFO L272 TraceCheckUtils]: 11: Hoare triple {712#true} [77] L26-1-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {712#true} is VALID [2022-04-28 00:08:54,537 INFO L290 TraceCheckUtils]: 12: Hoare triple {712#true} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {712#true} is VALID [2022-04-28 00:08:54,538 INFO L290 TraceCheckUtils]: 13: Hoare triple {712#true} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,538 INFO L290 TraceCheckUtils]: 14: Hoare triple {712#true} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:54,538 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {712#true} {712#true} [103] assume_abort_if_notEXIT-->L28: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {712#true} is VALID [2022-04-28 00:08:54,538 INFO L290 TraceCheckUtils]: 16: Hoare triple {712#true} [79] L28-->L38-2: Formula: (and (= v_main_~u~0_5 (+ (* v_main_~R~0_5 2) 1)) (= v_main_~v~0_5 1) (= v_main_~r~0_6 (+ (* v_main_~R~0_5 v_main_~R~0_5) (* (- 1) v_main_~A~0_7)))) InVars {main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5} OutVars{main_~v~0=v_main_~v~0_5, main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5, main_~u~0=v_main_~u~0_5, main_~r~0=v_main_~r~0_6} AuxVars[] AssignedVars[main_~v~0, main_~u~0, main_~r~0] {712#true} is VALID [2022-04-28 00:08:54,538 INFO L290 TraceCheckUtils]: 17: Hoare triple {712#true} [83] L38-2-->L34-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {712#true} is VALID [2022-04-28 00:08:54,539 INFO L290 TraceCheckUtils]: 18: Hoare triple {712#true} [87] L34-1-->L35: Formula: (< |v_main_#t~post6_5| 1) InVars {main_#t~post6=|v_main_#t~post6_5|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {712#true} is VALID [2022-04-28 00:08:54,539 INFO L272 TraceCheckUtils]: 19: Hoare triple {712#true} [90] L35-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* v_main_~r~0_10 4) (* v_main_~A~0_11 4)) (+ (* v_main_~u~0_7 v_main_~u~0_7) (* (- 1) (* v_main_~v~0_7 v_main_~v~0_7)) (* (- 2) v_main_~u~0_7) (* v_main_~v~0_7 2))) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~v~0=v_main_~v~0_7, main_~A~0=v_main_~A~0_11, main_~u~0=v_main_~u~0_7, main_~r~0=v_main_~r~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0, main_~r~0] {712#true} is VALID [2022-04-28 00:08:54,539 INFO L290 TraceCheckUtils]: 20: Hoare triple {712#true} [89] __VERIFIER_assertENTRY-->L12: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {777#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 00:08:54,540 INFO L290 TraceCheckUtils]: 21: Hoare triple {777#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} [93] L12-->L12-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {781#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 00:08:54,544 INFO L290 TraceCheckUtils]: 22: Hoare triple {781#(not (= |__VERIFIER_assert_#in~cond| 0))} [98] L12-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {781#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 00:08:54,545 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {781#(not (= |__VERIFIER_assert_#in~cond| 0))} {712#true} [105] __VERIFIER_assertEXIT-->L35-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* v_main_~r~0_10 4) (* v_main_~A~0_11 4)) (+ (* v_main_~u~0_7 v_main_~u~0_7) (* (- 1) (* v_main_~v~0_7 v_main_~v~0_7)) (* (- 2) v_main_~u~0_7) (* v_main_~v~0_7 2))) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~v~0=v_main_~v~0_7, main_~A~0=v_main_~A~0_11, main_~u~0=v_main_~u~0_7, main_~r~0=v_main_~r~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0, main_~r~0] {788#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4)))} is VALID [2022-04-28 00:08:54,546 INFO L290 TraceCheckUtils]: 24: Hoare triple {788#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4)))} [94] L35-1-->L34-3: Formula: (= v_main_~r~0_8 0) InVars {main_~r~0=v_main_~r~0_8} OutVars{main_~r~0=v_main_~r~0_8} AuxVars[] AssignedVars[] {792#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} is VALID [2022-04-28 00:08:54,547 INFO L272 TraceCheckUtils]: 25: Hoare triple {792#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} [85] L34-3-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 2) v_main_~u~0_8) (* v_main_~v~0_8 2) (* v_main_~u~0_8 v_main_~u~0_8) (* (- 1) (* v_main_~v~0_8 v_main_~v~0_8))) (* v_main_~A~0_12 4)) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~v~0=v_main_~v~0_8, main_~A~0=v_main_~A~0_12, main_~u~0=v_main_~u~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0] {796#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 00:08:54,547 INFO L290 TraceCheckUtils]: 26: Hoare triple {796#(<= 1 |__VERIFIER_assert_#in~cond|)} [89] __VERIFIER_assertENTRY-->L12: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {800#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 00:08:54,548 INFO L290 TraceCheckUtils]: 27: Hoare triple {800#(<= 1 __VERIFIER_assert_~cond)} [92] L12-->L13: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {713#false} is VALID [2022-04-28 00:08:54,548 INFO L290 TraceCheckUtils]: 28: Hoare triple {713#false} [96] L13-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {713#false} is VALID [2022-04-28 00:08:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 00:08:54,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 00:08:55,025 INFO L290 TraceCheckUtils]: 28: Hoare triple {713#false} [96] L13-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {713#false} is VALID [2022-04-28 00:08:55,026 INFO L290 TraceCheckUtils]: 27: Hoare triple {800#(<= 1 __VERIFIER_assert_~cond)} [92] L12-->L13: Formula: (= v___VERIFIER_assert_~cond_1 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[] {713#false} is VALID [2022-04-28 00:08:55,027 INFO L290 TraceCheckUtils]: 26: Hoare triple {796#(<= 1 |__VERIFIER_assert_#in~cond|)} [89] __VERIFIER_assertENTRY-->L12: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {800#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 00:08:55,027 INFO L272 TraceCheckUtils]: 25: Hoare triple {792#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} [85] L34-3-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* (- 2) v_main_~u~0_8) (* v_main_~v~0_8 2) (* v_main_~u~0_8 v_main_~u~0_8) (* (- 1) (* v_main_~v~0_8 v_main_~v~0_8))) (* v_main_~A~0_12 4)) 1 0) |v___VERIFIER_assert_#in~condInParam_2|) InVars {main_~v~0=v_main_~v~0_8, main_~A~0=v_main_~A~0_12, main_~u~0=v_main_~u~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0] {796#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 00:08:55,028 INFO L290 TraceCheckUtils]: 24: Hoare triple {819#(or (not (= main_~r~0 0)) (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4))))} [94] L35-1-->L34-3: Formula: (= v_main_~r~0_8 0) InVars {main_~r~0=v_main_~r~0_8} OutVars{main_~r~0=v_main_~r~0_8} AuxVars[] AssignedVars[] {792#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} is VALID [2022-04-28 00:08:55,029 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {781#(not (= |__VERIFIER_assert_#in~cond| 0))} {712#true} [105] __VERIFIER_assertEXIT-->L35-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= (ite (= (+ (* v_main_~r~0_10 4) (* v_main_~A~0_11 4)) (+ (* v_main_~u~0_7 v_main_~u~0_7) (* (- 1) (* v_main_~v~0_7 v_main_~v~0_7)) (* (- 2) v_main_~u~0_7) (* v_main_~v~0_7 2))) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~v~0=v_main_~v~0_7, main_~A~0=v_main_~A~0_11, main_~u~0=v_main_~u~0_7, main_~r~0=v_main_~r~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0, main_~r~0] {819#(or (not (= main_~r~0 0)) (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4))))} is VALID [2022-04-28 00:08:55,031 INFO L290 TraceCheckUtils]: 22: Hoare triple {781#(not (= |__VERIFIER_assert_#in~cond| 0))} [98] L12-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {781#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 00:08:55,032 INFO L290 TraceCheckUtils]: 21: Hoare triple {832#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} [93] L12-->L12-2: Formula: (not (= v___VERIFIER_assert_~cond_2 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {781#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 00:08:55,032 INFO L290 TraceCheckUtils]: 20: Hoare triple {712#true} [89] __VERIFIER_assertENTRY-->L12: Formula: (= v___VERIFIER_assert_~cond_3 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {832#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 00:08:55,032 INFO L272 TraceCheckUtils]: 19: Hoare triple {712#true} [90] L35-->__VERIFIER_assertENTRY: Formula: (= (ite (= (+ (* v_main_~r~0_10 4) (* v_main_~A~0_11 4)) (+ (* v_main_~u~0_7 v_main_~u~0_7) (* (- 1) (* v_main_~v~0_7 v_main_~v~0_7)) (* (- 2) v_main_~u~0_7) (* v_main_~v~0_7 2))) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~v~0=v_main_~v~0_7, main_~A~0=v_main_~A~0_11, main_~u~0=v_main_~u~0_7, main_~r~0=v_main_~r~0_10} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~v~0, main_~A~0, main_~u~0, main_~r~0] {712#true} is VALID [2022-04-28 00:08:55,032 INFO L290 TraceCheckUtils]: 18: Hoare triple {712#true} [87] L34-1-->L35: Formula: (< |v_main_#t~post6_5| 1) InVars {main_#t~post6=|v_main_#t~post6_5|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {712#true} is VALID [2022-04-28 00:08:55,033 INFO L290 TraceCheckUtils]: 17: Hoare triple {712#true} [83] L38-2-->L34-1: Formula: (and (= |v_main_#t~post6_1| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_1| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {712#true} is VALID [2022-04-28 00:08:55,033 INFO L290 TraceCheckUtils]: 16: Hoare triple {712#true} [79] L28-->L38-2: Formula: (and (= v_main_~u~0_5 (+ (* v_main_~R~0_5 2) 1)) (= v_main_~v~0_5 1) (= v_main_~r~0_6 (+ (* v_main_~R~0_5 v_main_~R~0_5) (* (- 1) v_main_~A~0_7)))) InVars {main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5} OutVars{main_~v~0=v_main_~v~0_5, main_~A~0=v_main_~A~0_7, main_~R~0=v_main_~R~0_5, main_~u~0=v_main_~u~0_5, main_~r~0=v_main_~r~0_6} AuxVars[] AssignedVars[main_~v~0, main_~u~0, main_~r~0] {712#true} is VALID [2022-04-28 00:08:55,033 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {712#true} {712#true} [103] assume_abort_if_notEXIT-->L28: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {712#true} is VALID [2022-04-28 00:08:55,033 INFO L290 TraceCheckUtils]: 14: Hoare triple {712#true} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,033 INFO L290 TraceCheckUtils]: 13: Hoare triple {712#true} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,033 INFO L290 TraceCheckUtils]: 12: Hoare triple {712#true} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {712#true} is VALID [2022-04-28 00:08:55,033 INFO L272 TraceCheckUtils]: 11: Hoare triple {712#true} [77] L26-1-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_2| (ite (= (let ((.cse0 (mod v_main_~A~0_10 2))) (ite (and (not (= .cse0 0)) (< v_main_~A~0_10 0)) (+ (- 2) .cse0) .cse0)) 1) 1 0)) InVars {main_~A~0=v_main_~A~0_10} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_2|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond] {712#true} is VALID [2022-04-28 00:08:55,034 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {712#true} {712#true} [102] assume_abort_if_notEXIT-->L26-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {712#true} is VALID [2022-04-28 00:08:55,034 INFO L290 TraceCheckUtils]: 9: Hoare triple {712#true} [84] L9-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,034 INFO L290 TraceCheckUtils]: 8: Hoare triple {712#true} [81] L9-->L9-2: Formula: (not (= v_assume_abort_if_not_~cond_3 0)) InVars {assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} OutVars{assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_3} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,034 INFO L290 TraceCheckUtils]: 7: Hoare triple {712#true} [78] assume_abort_if_notENTRY-->L9: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {712#true} is VALID [2022-04-28 00:08:55,034 INFO L272 TraceCheckUtils]: 6: Hoare triple {712#true} [76] L26-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (< (+ (* v_main_~R~0_6 v_main_~R~0_6) 1) (+ (* v_main_~R~0_6 2) v_main_~A~0_9)) 1 0)) InVars {main_~A~0=v_main_~A~0_9, main_~R~0=v_main_~R~0_6} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[] AssignedVars[main_~A~0, assume_abort_if_not_#in~cond, main_~R~0] {712#true} is VALID [2022-04-28 00:08:55,034 INFO L290 TraceCheckUtils]: 5: Hoare triple {712#true} [74] mainENTRY-->L26: Formula: (and (<= |v_main_#t~nondet5_2| 2147483647) (= v_main_~R~0_1 |v_main_#t~nondet5_2|) (<= 0 (+ |v_main_#t~nondet4_2| 2147483648)) (<= |v_main_#t~nondet4_2| 2147483647) (<= 0 (+ |v_main_#t~nondet5_2| 2147483648)) (= v_main_~A~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~v~0=v_main_~v~0_4, main_~A~0=v_main_~A~0_2, main_~R~0=v_main_~R~0_1, main_~u~0=v_main_~u~0_4, main_~r~0=v_main_~r~0_5} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~v~0, main_~A~0, main_~R~0, main_~u~0, main_~r~0] {712#true} is VALID [2022-04-28 00:08:55,034 INFO L272 TraceCheckUtils]: 4: Hoare triple {712#true} [71] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,035 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {712#true} {712#true} [101] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,035 INFO L290 TraceCheckUtils]: 2: Hoare triple {712#true} [75] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,035 INFO L290 TraceCheckUtils]: 1: Hoare triple {712#true} [72] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 13) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {712#true} is VALID [2022-04-28 00:08:55,035 INFO L272 TraceCheckUtils]: 0: Hoare triple {712#true} [70] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {712#true} is VALID [2022-04-28 00:08:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 00:08:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 00:08:55,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520546701] [2022-04-28 00:08:55,035 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 00:08:55,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789561674] [2022-04-28 00:08:55,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789561674] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 00:08:55,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 00:08:55,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-28 00:08:55,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45108974] [2022-04-28 00:08:55,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-28 00:08:55,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-04-28 00:08:55,037 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 00:08:55,037 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 00:08:55,060 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-28 00:08:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-28 00:08:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-28 00:08:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-28 00:08:55,061 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 00:08:55,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:55,445 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-04-28 00:08:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 00:08:55,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-04-28 00:08:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 00:08:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 00:08:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-28 00:08:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 00:08:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 35 transitions. [2022-04-28 00:08:55,448 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 35 transitions. [2022-04-28 00:08:55,491 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 00:08:55,492 INFO L225 Difference]: With dead ends: 39 [2022-04-28 00:08:55,492 INFO L226 Difference]: Without dead ends: 34 [2022-04-28 00:08:55,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-28 00:08:55,493 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 00:08:55,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 115 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 00:08:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-28 00:08:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-04-28 00:08:55,504 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 00:08:55,504 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:55,504 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:55,505 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:55,506 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-28 00:08:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-28 00:08:55,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:55,506 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:55,506 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-28 00:08:55,507 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 34 states. [2022-04-28 00:08:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 00:08:55,508 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-28 00:08:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-04-28 00:08:55,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 00:08:55,508 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 00:08:55,508 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 00:08:55,508 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 00:08:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 00:08:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-04-28 00:08:55,509 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-04-28 00:08:55,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 00:08:55,510 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-04-28 00:08:55,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 00:08:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-04-28 00:08:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-28 00:08:55,510 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 00:08:55,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 00:08:55,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-28 00:08:55,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:55,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 00:08:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 00:08:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2022-04-28 00:08:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 00:08:55,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165389226] [2022-04-28 00:08:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 00:08:55,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 00:08:55,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581156528] [2022-04-28 00:08:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 00:08:55,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:55,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 00:08:55,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 00:08:55,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-28 00:08:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 00:08:55,769 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 00:08:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 00:08:55,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 00:08:55,799 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 00:08:55,800 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 00:08:55,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-28 00:08:56,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 00:08:56,004 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-28 00:08:56,006 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L9-2 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-28 00:08:56,030 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L34-3 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2022-04-28 00:08:56,031 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 00:08:56,031 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 00:08:56,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 12:08:56 BasicIcfg [2022-04-28 00:08:56,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 00:08:56,033 INFO L158 Benchmark]: Toolchain (without parser) took 24216.53ms. Allocated memory was 179.3MB in the beginning and 226.5MB in the end (delta: 47.2MB). Free memory was 130.3MB in the beginning and 142.1MB in the end (delta: -11.9MB). Peak memory consumption was 35.5MB. Max. memory is 8.0GB. [2022-04-28 00:08:56,033 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 00:08:56,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.35ms. Allocated memory is still 179.3MB. Free memory was 130.0MB in the beginning and 155.6MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 00:08:56,033 INFO L158 Benchmark]: Boogie Preprocessor took 37.18ms. Allocated memory is still 179.3MB. Free memory was 155.6MB in the beginning and 153.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 00:08:56,033 INFO L158 Benchmark]: RCFGBuilder took 319.73ms. Allocated memory is still 179.3MB. Free memory was 153.9MB in the beginning and 142.6MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 00:08:56,034 INFO L158 Benchmark]: IcfgTransformer took 43.54ms. Allocated memory is still 179.3MB. Free memory was 142.3MB in the beginning and 140.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 00:08:56,034 INFO L158 Benchmark]: TraceAbstraction took 23613.84ms. Allocated memory was 179.3MB in the beginning and 226.5MB in the end (delta: 47.2MB). Free memory was 140.2MB in the beginning and 142.1MB in the end (delta: -1.9MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. [2022-04-28 00:08:56,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 189.35ms. Allocated memory is still 179.3MB. Free memory was 130.0MB in the beginning and 155.6MB in the end (delta: -25.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.18ms. Allocated memory is still 179.3MB. Free memory was 155.6MB in the beginning and 153.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 319.73ms. Allocated memory is still 179.3MB. Free memory was 153.9MB in the beginning and 142.6MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 43.54ms. Allocated memory is still 179.3MB. Free memory was 142.3MB in the beginning and 140.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 23613.84ms. Allocated memory was 179.3MB in the beginning and 226.5MB in the end (delta: 47.2MB). Free memory was 140.2MB in the beginning and 142.1MB in the end (delta: -1.9MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=10, counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(counter)=0, A=7, counter=0, R=3] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [\old(counter)=0, A=7, counter=0, R=3] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [\old(counter)=0, A=7, counter=0, r=2, R=3, u=7, v=1] [L34] EXPR counter++ VAL [\old(counter)=0, A=7, counter=1, counter++=0, r=2, R=3, u=7, v=1] [L34] COND TRUE counter++<1 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=7, counter=1, r=2, R=3, u=7, v=1] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=7, counter=1, R=3, r=2, u=7, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=7, counter=1, r=1, R=3, u=7, v=3] [L34] EXPR counter++ VAL [\old(counter)=0, A=7, counter=2, counter++=1, R=3, r=1, u=7, v=3] [L34] COND FALSE !(counter++<1) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 298 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 193 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 105 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 19, 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 10 NumberOfNonLiveVariables, 379 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 22/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-28 00:08:56,049 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...