/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 13:20:10,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 13:20:10,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 13:20:10,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 13:20:10,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 13:20:10,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 13:20:10,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 13:20:10,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 13:20:10,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 13:20:10,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 13:20:10,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 13:20:10,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 13:20:10,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 13:20:10,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 13:20:10,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 13:20:10,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 13:20:10,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 13:20:10,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 13:20:10,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 13:20:10,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 13:20:10,885 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 13:20:10,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 13:20:10,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 13:20:10,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 13:20:10,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 13:20:10,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-27 13:20:10,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-27 13:20:10,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-27 13:20:10,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-27 13:20:10,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-27 13:20:10,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-27 13:20:10,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-27 13:20:10,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-27 13:20:10,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-27 13:20:10,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-27 13:20:10,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-27 13:20:10,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-27 13:20:10,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-27 13:20:10,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-27 13:20:10,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 13:20:10,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 13:20:10,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 13:20:10,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-27 13:20:10,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 13:20:10,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 13:20:10,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-27 13:20:10,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-27 13:20:10,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 13:20:10,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 13:20:10,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 13:20:10,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 13:20:10,924 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 13:20:10,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 13:20:10,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 13:20:10,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 13:20:10,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 13:20:10,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 13:20:10,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 13:20:10,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 13:20:10,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 13:20:10,925 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 13:20:10,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 13:20:10,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 13:20:10,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 13:20:10,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 13:20:10,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 13:20:10,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 13:20:10,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 13:20:10,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 13:20:10,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 13:20:10,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 13:20:10,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 13:20:10,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 13:20:10,927 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-04-27 13:20:10,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-27 13:20:10,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 13:20:10,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 13:20:11,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 13:20:11,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 13:20:11,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 13:20:11,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 13:20:11,153 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 13:20:11,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound1.c [2022-04-27 13:20:11,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8562f28fe/af7c2c1ae0b44c239e559d6dd0e4ea95/FLAG8eeca9d93 [2022-04-27 13:20:11,520 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 13:20:11,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_unwindbound1.c [2022-04-27 13:20:11,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8562f28fe/af7c2c1ae0b44c239e559d6dd0e4ea95/FLAG8eeca9d93 [2022-04-27 13:20:11,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8562f28fe/af7c2c1ae0b44c239e559d6dd0e4ea95 [2022-04-27 13:20:11,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 13:20:11,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-27 13:20:11,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 13:20:11,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 13:20:11,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 13:20:11,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535b236d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11, skipping insertion in model container [2022-04-27 13:20:11,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 13:20:11,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 13:20:11,655 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/geo1-ll_unwindbound1.c[546,559] [2022-04-27 13:20:11,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 13:20:11,670 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 13:20:11,679 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/geo1-ll_unwindbound1.c[546,559] [2022-04-27 13:20:11,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 13:20:11,693 INFO L208 MainTranslator]: Completed translation [2022-04-27 13:20:11,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11 WrapperNode [2022-04-27 13:20:11,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 13:20:11,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 13:20:11,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 13:20:11,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 13:20:11,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 13:20:11,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 13:20:11,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 13:20:11,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 13:20:11,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (1/1) ... [2022-04-27 13:20:11,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 13:20:11,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:20:11,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-27 13:20:11,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-27 13:20:11,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 13:20:11,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 13:20:11,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 13:20:11,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 13:20:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 13:20:11,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 13:20:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 13:20:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 13:20:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 13:20:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 13:20:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 13:20:11,814 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 13:20:11,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 13:20:11,936 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 13:20:11,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 13:20:11,952 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 13:20:11,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 01:20:11 BoogieIcfgContainer [2022-04-27 13:20:11,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 13:20:11,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 13:20:11,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 13:20:11,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 13:20:11,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 01:20:11" (1/3) ... [2022-04-27 13:20:11,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a603142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 01:20:11, skipping insertion in model container [2022-04-27 13:20:11,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:20:11" (2/3) ... [2022-04-27 13:20:11,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a603142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 01:20:11, skipping insertion in model container [2022-04-27 13:20:11,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 01:20:11" (3/3) ... [2022-04-27 13:20:11,959 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound1.c [2022-04-27 13:20:11,968 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 13:20:11,968 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 13:20:11,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 13:20:12,001 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=PETRI_NET, 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@29cdf825, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4610eb22 [2022-04-27 13:20:12,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 13:20:12,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-04-27 13:20:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-27 13:20:12,017 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:20:12,017 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] [2022-04-27 13:20:12,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:20:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:20:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash 730417173, now seen corresponding path program 1 times [2022-04-27 13:20:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:20:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137348674] [2022-04-27 13:20:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:20:12,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:20:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 13:20:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:12,179 INFO L290 TraceCheckUtils]: 0: Hoare triple {46#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-27 13:20:12,179 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-27 13:20:12,179 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #62#return; {33#true} is VALID [2022-04-27 13:20:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-27 13:20:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:12,186 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-27 13:20:12,187 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-27 13:20:12,187 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-27 13:20:12,187 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {33#true} #54#return; {34#false} is VALID [2022-04-27 13:20:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-27 13:20:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:12,193 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-27 13:20:12,193 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-27 13:20:12,193 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-27 13:20:12,194 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {34#false} #56#return; {34#false} is VALID [2022-04-27 13:20:12,194 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {46#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 13:20:12,195 INFO L290 TraceCheckUtils]: 1: Hoare triple {46#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {33#true} is VALID [2022-04-27 13:20:12,195 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-27 13:20:12,195 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #62#return; {33#true} is VALID [2022-04-27 13:20:12,195 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret7 := main(); {33#true} is VALID [2022-04-27 13:20:12,195 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {33#true} is VALID [2022-04-27 13:20:12,195 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {33#true} is VALID [2022-04-27 13:20:12,196 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-27 13:20:12,196 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-27 13:20:12,196 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-27 13:20:12,196 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} #54#return; {34#false} is VALID [2022-04-27 13:20:12,196 INFO L272 TraceCheckUtils]: 11: Hoare triple {34#false} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {33#true} is VALID [2022-04-27 13:20:12,197 INFO L290 TraceCheckUtils]: 12: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-27 13:20:12,197 INFO L290 TraceCheckUtils]: 13: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-27 13:20:12,197 INFO L290 TraceCheckUtils]: 14: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-27 13:20:12,197 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {34#false} {34#false} #56#return; {34#false} is VALID [2022-04-27 13:20:12,197 INFO L290 TraceCheckUtils]: 16: Hoare triple {34#false} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {34#false} is VALID [2022-04-27 13:20:12,198 INFO L290 TraceCheckUtils]: 17: Hoare triple {34#false} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {34#false} is VALID [2022-04-27 13:20:12,198 INFO L290 TraceCheckUtils]: 18: Hoare triple {34#false} assume !!(#t~post6 < 1);havoc #t~post6; {34#false} is VALID [2022-04-27 13:20:12,198 INFO L272 TraceCheckUtils]: 19: Hoare triple {34#false} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {34#false} is VALID [2022-04-27 13:20:12,198 INFO L290 TraceCheckUtils]: 20: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2022-04-27 13:20:12,198 INFO L290 TraceCheckUtils]: 21: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2022-04-27 13:20:12,198 INFO L290 TraceCheckUtils]: 22: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-27 13:20:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-27 13:20:12,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:20:12,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137348674] [2022-04-27 13:20:12,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137348674] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:20:12,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:20:12,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 13:20:12,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387329834] [2022-04-27 13:20:12,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:20:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-27 13:20:12,206 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:20:12,207 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:20:12,241 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:12,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 13:20:12,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:20:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 13:20:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 13:20:12,261 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:20:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:12,361 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2022-04-27 13:20:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 13:20:12,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-27 13:20:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:20:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:20:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-04-27 13:20:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:20:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-04-27 13:20:12,373 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 70 transitions. [2022-04-27 13:20:12,462 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 70 edges. 70 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:12,472 INFO L225 Difference]: With dead ends: 54 [2022-04-27 13:20:12,472 INFO L226 Difference]: Without dead ends: 26 [2022-04-27 13:20:12,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 13:20:12,480 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 13:20:12,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 13:20:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-27 13:20:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-04-27 13:20:12,513 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:20:12,514 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-04-27 13:20:12,518 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-04-27 13:20:12,518 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-04-27 13:20:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:12,523 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-27 13:20:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-27 13:20:12,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:12,524 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:12,524 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 26 states. [2022-04-27 13:20:12,524 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 26 states. [2022-04-27 13:20:12,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:12,526 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-27 13:20:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-27 13:20:12,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:12,527 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:12,527 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:20:12,527 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:20:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-04-27 13:20:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-27 13:20:12,529 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2022-04-27 13:20:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:20:12,530 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-27 13:20:12,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:20:12,530 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-27 13:20:12,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-27 13:20:12,530 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:20:12,531 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] [2022-04-27 13:20:12,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 13:20:12,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:20:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:20:12,532 INFO L85 PathProgramCache]: Analyzing trace with hash -942473515, now seen corresponding path program 1 times [2022-04-27 13:20:12,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:20:12,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190347792] [2022-04-27 13:20:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:20:12,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:20:12,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:20:12,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154245178] [2022-04-27 13:20:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:20:12,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:20:12,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:20:12,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-27 13:20:12,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-27 13:20:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:12,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 13:20:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:12,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:20:12,817 INFO L272 TraceCheckUtils]: 0: Hoare triple {209#true} call ULTIMATE.init(); {209#true} is VALID [2022-04-27 13:20:12,818 INFO L290 TraceCheckUtils]: 1: Hoare triple {209#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {209#true} is VALID [2022-04-27 13:20:12,818 INFO L290 TraceCheckUtils]: 2: Hoare triple {209#true} assume true; {209#true} is VALID [2022-04-27 13:20:12,818 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {209#true} {209#true} #62#return; {209#true} is VALID [2022-04-27 13:20:12,818 INFO L272 TraceCheckUtils]: 4: Hoare triple {209#true} call #t~ret7 := main(); {209#true} is VALID [2022-04-27 13:20:12,818 INFO L290 TraceCheckUtils]: 5: Hoare triple {209#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {209#true} is VALID [2022-04-27 13:20:12,818 INFO L272 TraceCheckUtils]: 6: Hoare triple {209#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {209#true} is VALID [2022-04-27 13:20:12,818 INFO L290 TraceCheckUtils]: 7: Hoare triple {209#true} ~cond := #in~cond; {209#true} is VALID [2022-04-27 13:20:12,819 INFO L290 TraceCheckUtils]: 8: Hoare triple {209#true} assume !(0 == ~cond); {209#true} is VALID [2022-04-27 13:20:12,819 INFO L290 TraceCheckUtils]: 9: Hoare triple {209#true} assume true; {209#true} is VALID [2022-04-27 13:20:12,819 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {209#true} {209#true} #54#return; {209#true} is VALID [2022-04-27 13:20:12,819 INFO L272 TraceCheckUtils]: 11: Hoare triple {209#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {209#true} is VALID [2022-04-27 13:20:12,819 INFO L290 TraceCheckUtils]: 12: Hoare triple {209#true} ~cond := #in~cond; {209#true} is VALID [2022-04-27 13:20:12,819 INFO L290 TraceCheckUtils]: 13: Hoare triple {209#true} assume !(0 == ~cond); {209#true} is VALID [2022-04-27 13:20:12,822 INFO L290 TraceCheckUtils]: 14: Hoare triple {209#true} assume true; {209#true} is VALID [2022-04-27 13:20:12,822 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {209#true} {209#true} #56#return; {209#true} is VALID [2022-04-27 13:20:12,823 INFO L290 TraceCheckUtils]: 16: Hoare triple {209#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {262#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-27 13:20:12,823 INFO L290 TraceCheckUtils]: 17: Hoare triple {262#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {262#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-27 13:20:12,824 INFO L290 TraceCheckUtils]: 18: Hoare triple {262#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} assume !!(#t~post6 < 1);havoc #t~post6; {262#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} is VALID [2022-04-27 13:20:12,825 INFO L272 TraceCheckUtils]: 19: Hoare triple {262#(and (= main_~z~0 main_~y~0) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {272#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:20:12,825 INFO L290 TraceCheckUtils]: 20: Hoare triple {272#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {276#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:20:12,827 INFO L290 TraceCheckUtils]: 21: Hoare triple {276#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {210#false} is VALID [2022-04-27 13:20:12,827 INFO L290 TraceCheckUtils]: 22: Hoare triple {210#false} assume !false; {210#false} is VALID [2022-04-27 13:20:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-27 13:20:12,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:20:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:20:12,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190347792] [2022-04-27 13:20:12,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:20:12,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154245178] [2022-04-27 13:20:12,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154245178] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:20:12,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:20:12,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-27 13:20:12,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033913365] [2022-04-27 13:20:12,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:20:12,836 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 [2022-04-27 13:20:12,836 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:20:12,837 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) [2022-04-27 13:20:12,852 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 13:20:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:20:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 13:20:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-27 13:20:12,855 INFO L87 Difference]: Start difference. First operand 25 states and 28 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) [2022-04-27 13:20:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:12,939 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-27 13:20:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 13:20:12,940 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 [2022-04-27 13:20:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:20:12,940 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) [2022-04-27 13:20:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-27 13:20:12,945 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) [2022-04-27 13:20:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-27 13:20:12,953 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2022-04-27 13:20:12,984 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:12,986 INFO L225 Difference]: With dead ends: 36 [2022-04-27 13:20:12,987 INFO L226 Difference]: Without dead ends: 34 [2022-04-27 13:20:12,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-27 13:20:12,989 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 13:20:12,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 13:20:12,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-27 13:20:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-04-27 13:20:12,998 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:20:12,998 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 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) [2022-04-27 13:20:12,998 INFO L74 IsIncluded]: Start isIncluded. First operand 34 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) [2022-04-27 13:20:12,999 INFO L87 Difference]: Start difference. First operand 34 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) [2022-04-27 13:20:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:13,004 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-27 13:20:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-04-27 13:20:13,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:13,005 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:13,009 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 34 states. [2022-04-27 13:20:13,009 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 34 states. [2022-04-27 13:20:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:13,012 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-04-27 13:20:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-04-27 13:20:13,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:13,014 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:13,014 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:20:13,014 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:20:13,014 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) [2022-04-27 13:20:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-04-27 13:20:13,021 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2022-04-27 13:20:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:20:13,024 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-04-27 13:20:13,024 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) [2022-04-27 13:20:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-04-27 13:20:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-27 13:20:13,027 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:20:13,027 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, 1] [2022-04-27 13:20:13,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-27 13:20:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:20:13,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:20:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:20:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash 769172850, now seen corresponding path program 1 times [2022-04-27 13:20:13,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:20:13,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959291552] [2022-04-27 13:20:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:20:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:20:13,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:20:13,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759167116] [2022-04-27 13:20:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:20:13,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:20:13,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:20:13,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-27 13:20:13,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-27 13:20:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:13,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-27 13:20:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:13,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:20:13,429 INFO L272 TraceCheckUtils]: 0: Hoare triple {448#true} call ULTIMATE.init(); {448#true} is VALID [2022-04-27 13:20:13,430 INFO L290 TraceCheckUtils]: 1: Hoare triple {448#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,430 INFO L290 TraceCheckUtils]: 2: Hoare triple {456#(<= ~counter~0 0)} assume true; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,431 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {456#(<= ~counter~0 0)} {448#true} #62#return; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,432 INFO L272 TraceCheckUtils]: 4: Hoare triple {456#(<= ~counter~0 0)} call #t~ret7 := main(); {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,432 INFO L290 TraceCheckUtils]: 5: Hoare triple {456#(<= ~counter~0 0)} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,433 INFO L272 TraceCheckUtils]: 6: Hoare triple {456#(<= ~counter~0 0)} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,433 INFO L290 TraceCheckUtils]: 7: Hoare triple {456#(<= ~counter~0 0)} ~cond := #in~cond; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,433 INFO L290 TraceCheckUtils]: 8: Hoare triple {456#(<= ~counter~0 0)} assume !(0 == ~cond); {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,434 INFO L290 TraceCheckUtils]: 9: Hoare triple {456#(<= ~counter~0 0)} assume true; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,434 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {456#(<= ~counter~0 0)} {456#(<= ~counter~0 0)} #54#return; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,435 INFO L272 TraceCheckUtils]: 11: Hoare triple {456#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,435 INFO L290 TraceCheckUtils]: 12: Hoare triple {456#(<= ~counter~0 0)} ~cond := #in~cond; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,436 INFO L290 TraceCheckUtils]: 13: Hoare triple {456#(<= ~counter~0 0)} assume !(0 == ~cond); {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,436 INFO L290 TraceCheckUtils]: 14: Hoare triple {456#(<= ~counter~0 0)} assume true; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,436 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {456#(<= ~counter~0 0)} {456#(<= ~counter~0 0)} #56#return; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,437 INFO L290 TraceCheckUtils]: 16: Hoare triple {456#(<= ~counter~0 0)} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {456#(<= ~counter~0 0)} is VALID [2022-04-27 13:20:13,437 INFO L290 TraceCheckUtils]: 17: Hoare triple {456#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {505#(<= |main_#t~post6| 0)} is VALID [2022-04-27 13:20:13,438 INFO L290 TraceCheckUtils]: 18: Hoare triple {505#(<= |main_#t~post6| 0)} assume !(#t~post6 < 1);havoc #t~post6; {449#false} is VALID [2022-04-27 13:20:13,438 INFO L290 TraceCheckUtils]: 19: Hoare triple {449#false} ~x~0 := ~x~0 * (~z~0 - 1); {449#false} is VALID [2022-04-27 13:20:13,438 INFO L272 TraceCheckUtils]: 20: Hoare triple {449#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {449#false} is VALID [2022-04-27 13:20:13,438 INFO L290 TraceCheckUtils]: 21: Hoare triple {449#false} ~cond := #in~cond; {449#false} is VALID [2022-04-27 13:20:13,438 INFO L290 TraceCheckUtils]: 22: Hoare triple {449#false} assume 0 == ~cond; {449#false} is VALID [2022-04-27 13:20:13,438 INFO L290 TraceCheckUtils]: 23: Hoare triple {449#false} assume !false; {449#false} is VALID [2022-04-27 13:20:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-27 13:20:13,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:20:13,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:20:13,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959291552] [2022-04-27 13:20:13,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:20:13,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759167116] [2022-04-27 13:20:13,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759167116] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:20:13,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:20:13,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-27 13:20:13,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124513732] [2022-04-27 13:20:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:20:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 24 [2022-04-27 13:20:13,442 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:20:13,442 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-04-27 13:20:13,461 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:13,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-27 13:20:13,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:20:13,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-27 13:20:13,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 13:20:13,462 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-04-27 13:20:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:13,514 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-04-27 13:20:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-27 13:20:13,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 24 [2022-04-27 13:20:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:20:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-04-27 13:20:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-27 13:20:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-04-27 13:20:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-27 13:20:13,519 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-27 13:20:13,562 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:13,565 INFO L225 Difference]: With dead ends: 40 [2022-04-27 13:20:13,565 INFO L226 Difference]: Without dead ends: 32 [2022-04-27 13:20:13,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 13:20:13,568 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 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 [2022-04-27 13:20:13,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 13:20:13,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-27 13:20:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-27 13:20:13,582 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:20:13,583 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-04-27 13:20:13,583 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-04-27 13:20:13,584 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-04-27 13:20:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:13,588 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-27 13:20:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-27 13:20:13,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:13,591 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:13,591 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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 32 states. [2022-04-27 13:20:13,591 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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 32 states. [2022-04-27 13:20:13,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:13,593 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-27 13:20:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-27 13:20:13,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:13,593 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:13,593 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:20:13,593 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:20:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-04-27 13:20:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-27 13:20:13,596 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2022-04-27 13:20:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:20:13,596 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-27 13:20:13,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-04-27 13:20:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-27 13:20:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-27 13:20:13,597 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:20:13,597 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, 1] [2022-04-27 13:20:13,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-27 13:20:13,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-27 13:20:13,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:20:13,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:20:13,804 INFO L85 PathProgramCache]: Analyzing trace with hash 431121724, now seen corresponding path program 1 times [2022-04-27 13:20:13,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:20:13,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165525107] [2022-04-27 13:20:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:20:13,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:20:13,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:20:13,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636408178] [2022-04-27 13:20:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:20:13,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:20:13,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:20:13,827 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-27 13:20:13,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-27 13:20:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:13,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-27 13:20:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:20:13,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:20:19,216 INFO L272 TraceCheckUtils]: 0: Hoare triple {689#true} call ULTIMATE.init(); {689#true} is VALID [2022-04-27 13:20:19,216 INFO L290 TraceCheckUtils]: 1: Hoare triple {689#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {689#true} is VALID [2022-04-27 13:20:19,216 INFO L290 TraceCheckUtils]: 2: Hoare triple {689#true} assume true; {689#true} is VALID [2022-04-27 13:20:19,216 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {689#true} {689#true} #62#return; {689#true} is VALID [2022-04-27 13:20:19,216 INFO L272 TraceCheckUtils]: 4: Hoare triple {689#true} call #t~ret7 := main(); {689#true} is VALID [2022-04-27 13:20:19,216 INFO L290 TraceCheckUtils]: 5: Hoare triple {689#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {689#true} is VALID [2022-04-27 13:20:19,217 INFO L272 TraceCheckUtils]: 6: Hoare triple {689#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {689#true} is VALID [2022-04-27 13:20:19,217 INFO L290 TraceCheckUtils]: 7: Hoare triple {689#true} ~cond := #in~cond; {689#true} is VALID [2022-04-27 13:20:19,217 INFO L290 TraceCheckUtils]: 8: Hoare triple {689#true} assume !(0 == ~cond); {689#true} is VALID [2022-04-27 13:20:19,217 INFO L290 TraceCheckUtils]: 9: Hoare triple {689#true} assume true; {689#true} is VALID [2022-04-27 13:20:19,217 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {689#true} {689#true} #54#return; {689#true} is VALID [2022-04-27 13:20:19,217 INFO L272 TraceCheckUtils]: 11: Hoare triple {689#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {689#true} is VALID [2022-04-27 13:20:19,217 INFO L290 TraceCheckUtils]: 12: Hoare triple {689#true} ~cond := #in~cond; {689#true} is VALID [2022-04-27 13:20:19,217 INFO L290 TraceCheckUtils]: 13: Hoare triple {689#true} assume !(0 == ~cond); {689#true} is VALID [2022-04-27 13:20:19,217 INFO L290 TraceCheckUtils]: 14: Hoare triple {689#true} assume true; {689#true} is VALID [2022-04-27 13:20:19,217 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {689#true} {689#true} #56#return; {689#true} is VALID [2022-04-27 13:20:19,218 INFO L290 TraceCheckUtils]: 16: Hoare triple {689#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {689#true} is VALID [2022-04-27 13:20:19,218 INFO L290 TraceCheckUtils]: 17: Hoare triple {689#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {689#true} is VALID [2022-04-27 13:20:19,218 INFO L290 TraceCheckUtils]: 18: Hoare triple {689#true} assume !!(#t~post6 < 1);havoc #t~post6; {689#true} is VALID [2022-04-27 13:20:19,218 INFO L272 TraceCheckUtils]: 19: Hoare triple {689#true} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {689#true} is VALID [2022-04-27 13:20:19,218 INFO L290 TraceCheckUtils]: 20: Hoare triple {689#true} ~cond := #in~cond; {754#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:20:19,219 INFO L290 TraceCheckUtils]: 21: Hoare triple {754#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {758#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:20:19,221 INFO L290 TraceCheckUtils]: 22: Hoare triple {758#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {758#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:20:19,221 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {758#(not (= |__VERIFIER_assert_#in~cond| 0))} {689#true} #58#return; {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-27 13:20:19,222 INFO L290 TraceCheckUtils]: 24: Hoare triple {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} assume !(~c~0 < ~k~0); {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-27 13:20:19,225 INFO L290 TraceCheckUtils]: 25: Hoare triple {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} ~x~0 := ~x~0 * (~z~0 - 1); {772#(exists ((v_main_~x~0_11 Int) (main_~z~0 Int)) (and (= (+ (* v_main_~x~0_11 main_~z~0) 1) (+ v_main_~x~0_11 main_~y~0)) (= main_~x~0 (* v_main_~x~0_11 (+ (- 1) main_~z~0)))))} is VALID [2022-04-27 13:20:19,226 INFO L272 TraceCheckUtils]: 26: Hoare triple {772#(exists ((v_main_~x~0_11 Int) (main_~z~0 Int)) (and (= (+ (* v_main_~x~0_11 main_~z~0) 1) (+ v_main_~x~0_11 main_~y~0)) (= main_~x~0 (* v_main_~x~0_11 (+ (- 1) main_~z~0)))))} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {776#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:20:19,227 INFO L290 TraceCheckUtils]: 27: Hoare triple {776#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {780#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:20:19,227 INFO L290 TraceCheckUtils]: 28: Hoare triple {780#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {690#false} is VALID [2022-04-27 13:20:19,227 INFO L290 TraceCheckUtils]: 29: Hoare triple {690#false} assume !false; {690#false} is VALID [2022-04-27 13:20:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-27 13:20:19,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 13:20:24,794 INFO L290 TraceCheckUtils]: 29: Hoare triple {690#false} assume !false; {690#false} is VALID [2022-04-27 13:20:24,794 INFO L290 TraceCheckUtils]: 28: Hoare triple {780#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {690#false} is VALID [2022-04-27 13:20:24,794 INFO L290 TraceCheckUtils]: 27: Hoare triple {776#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {780#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:20:24,795 INFO L272 TraceCheckUtils]: 26: Hoare triple {796#(= (+ main_~x~0 1) main_~y~0)} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {776#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:20:24,796 INFO L290 TraceCheckUtils]: 25: Hoare triple {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} ~x~0 := ~x~0 * (~z~0 - 1); {796#(= (+ main_~x~0 1) main_~y~0)} is VALID [2022-04-27 13:20:24,796 INFO L290 TraceCheckUtils]: 24: Hoare triple {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} assume !(~c~0 < ~k~0); {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-27 13:20:24,797 INFO L284 TraceCheckUtils]: 23: Hoare quadruple {758#(not (= |__VERIFIER_assert_#in~cond| 0))} {689#true} #58#return; {765#(= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0))} is VALID [2022-04-27 13:20:24,797 INFO L290 TraceCheckUtils]: 22: Hoare triple {758#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {758#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:20:24,798 INFO L290 TraceCheckUtils]: 21: Hoare triple {815#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {758#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:20:24,798 INFO L290 TraceCheckUtils]: 20: Hoare triple {689#true} ~cond := #in~cond; {815#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-27 13:20:24,798 INFO L272 TraceCheckUtils]: 19: Hoare triple {689#true} call __VERIFIER_assert((if 0 == 1 + (~x~0 * ~z~0 - ~x~0 - ~y~0) then 1 else 0)); {689#true} is VALID [2022-04-27 13:20:24,798 INFO L290 TraceCheckUtils]: 18: Hoare triple {689#true} assume !!(#t~post6 < 1);havoc #t~post6; {689#true} is VALID [2022-04-27 13:20:24,798 INFO L290 TraceCheckUtils]: 17: Hoare triple {689#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {689#true} is VALID [2022-04-27 13:20:24,799 INFO L290 TraceCheckUtils]: 16: Hoare triple {689#true} ~x~0 := 1;~y~0 := ~z~0;~c~0 := 1; {689#true} is VALID [2022-04-27 13:20:24,799 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {689#true} {689#true} #56#return; {689#true} is VALID [2022-04-27 13:20:24,799 INFO L290 TraceCheckUtils]: 14: Hoare triple {689#true} assume true; {689#true} is VALID [2022-04-27 13:20:24,799 INFO L290 TraceCheckUtils]: 13: Hoare triple {689#true} assume !(0 == ~cond); {689#true} is VALID [2022-04-27 13:20:24,799 INFO L290 TraceCheckUtils]: 12: Hoare triple {689#true} ~cond := #in~cond; {689#true} is VALID [2022-04-27 13:20:24,799 INFO L272 TraceCheckUtils]: 11: Hoare triple {689#true} call assume_abort_if_not((if ~k~0 >= 1 then 1 else 0)); {689#true} is VALID [2022-04-27 13:20:24,799 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {689#true} {689#true} #54#return; {689#true} is VALID [2022-04-27 13:20:24,799 INFO L290 TraceCheckUtils]: 9: Hoare triple {689#true} assume true; {689#true} is VALID [2022-04-27 13:20:24,799 INFO L290 TraceCheckUtils]: 8: Hoare triple {689#true} assume !(0 == ~cond); {689#true} is VALID [2022-04-27 13:20:24,799 INFO L290 TraceCheckUtils]: 7: Hoare triple {689#true} ~cond := #in~cond; {689#true} is VALID [2022-04-27 13:20:24,800 INFO L272 TraceCheckUtils]: 6: Hoare triple {689#true} call assume_abort_if_not((if ~z~0 >= 1 then 1 else 0)); {689#true} is VALID [2022-04-27 13:20:24,800 INFO L290 TraceCheckUtils]: 5: Hoare triple {689#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~k~0 := #t~nondet5;havoc #t~nondet5; {689#true} is VALID [2022-04-27 13:20:24,800 INFO L272 TraceCheckUtils]: 4: Hoare triple {689#true} call #t~ret7 := main(); {689#true} is VALID [2022-04-27 13:20:24,800 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {689#true} {689#true} #62#return; {689#true} is VALID [2022-04-27 13:20:24,800 INFO L290 TraceCheckUtils]: 2: Hoare triple {689#true} assume true; {689#true} is VALID [2022-04-27 13:20:24,800 INFO L290 TraceCheckUtils]: 1: Hoare triple {689#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {689#true} is VALID [2022-04-27 13:20:24,800 INFO L272 TraceCheckUtils]: 0: Hoare triple {689#true} call ULTIMATE.init(); {689#true} is VALID [2022-04-27 13:20:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-27 13:20:24,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:20:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165525107] [2022-04-27 13:20:24,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:20:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636408178] [2022-04-27 13:20:24,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636408178] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 13:20:24,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-27 13:20:24,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-27 13:20:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009767624] [2022-04-27 13:20:24,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-27 13:20:24,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-04-27 13:20:24,802 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:20:24,802 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-27 13:20:24,826 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:24,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-27 13:20:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:20:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-27 13:20:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-27 13:20:24,827 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-27 13:20:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:25,015 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-27 13:20:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-27 13:20:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-04-27 13:20:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:20:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-27 13:20:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2022-04-27 13:20:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-27 13:20:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2022-04-27 13:20:25,018 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 28 transitions. [2022-04-27 13:20:25,049 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:20:25,049 INFO L225 Difference]: With dead ends: 32 [2022-04-27 13:20:25,050 INFO L226 Difference]: Without dead ends: 0 [2022-04-27 13:20:25,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-27 13:20:25,050 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-27 13:20:25,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 104 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2022-04-27 13:20:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-27 13:20:25,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-27 13:20:25,051 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:20:25,051 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 13:20:25,052 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 13:20:25,052 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 13:20:25,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:25,052 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 13:20:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:20:25,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:25,052 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:25,052 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-27 13:20:25,052 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-27 13:20:25,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:20:25,052 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 13:20:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:20:25,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:25,052 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:20:25,053 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:20:25,053 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:20:25,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 13:20:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-27 13:20:25,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-04-27 13:20:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:20:25,053 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-27 13:20:25,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-27 13:20:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:20:25,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:20:25,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 13:20:25,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-27 13:20:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:20:25,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-27 13:20:25,324 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2022-04-27 13:20:25,324 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2022-04-27 13:20:25,324 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2022-04-27 13:20:25,324 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-04-27 13:20:25,324 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-04-27 13:20:25,324 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2022-04-27 13:20:25,324 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2022-04-27 13:20:25,324 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (or (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) (not (<= |old(~counter~0)| 0))) [2022-04-27 13:20:25,324 INFO L899 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 23 51) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 23 51) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (or (= (+ (* main_~z~0 main_~x~0) 1) (+ main_~y~0 main_~x~0)) (not (<= |old(~counter~0)| 0))) [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 45) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L895 garLoopResultBuilder]: At program point mainENTRY(lines 23 51) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-27 13:20:25,325 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-27 13:20:25,325 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-27 13:20:25,325 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (= (+ main_~x~0 1) main_~y~0) (not (<= |old(~counter~0)| 0))) [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point L49-1(line 49) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-27 13:20:25,325 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-27 13:20:25,325 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-27 13:20:25,326 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-27 13:20:25,326 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-27 13:20:25,327 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-27 13:20:25,327 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-27 13:20:25,327 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2022-04-27 13:20:25,327 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2022-04-27 13:20:25,327 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-04-27 13:20:25,327 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2022-04-27 13:20:25,327 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2022-04-27 13:20:25,327 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2022-04-27 13:20:25,334 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-27 13:20:25,336 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 13:20:25,339 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 13:20:25,339 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 13:20:25,340 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-27 13:20:25,341 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L35-4 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L49-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: L36-1 has no Hoare annotation [2022-04-27 13:20:25,342 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 13:20:25,342 INFO L163 areAnnotationChecker]: CFG has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-27 13:20:25,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 01:20:25 BoogieIcfgContainer [2022-04-27 13:20:25,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 13:20:25,349 INFO L158 Benchmark]: Toolchain (without parser) took 13809.70ms. Allocated memory was 187.7MB in the beginning and 252.7MB in the end (delta: 65.0MB). Free memory was 137.6MB in the beginning and 100.3MB in the end (delta: 37.3MB). Peak memory consumption was 103.8MB. Max. memory is 8.0GB. [2022-04-27 13:20:25,349 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 13:20:25,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.55ms. Allocated memory is still 187.7MB. Free memory was 137.4MB in the beginning and 163.0MB in the end (delta: -25.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-27 13:20:25,350 INFO L158 Benchmark]: Boogie Preprocessor took 18.69ms. Allocated memory is still 187.7MB. Free memory was 163.0MB in the beginning and 161.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 13:20:25,350 INFO L158 Benchmark]: RCFGBuilder took 240.44ms. Allocated memory is still 187.7MB. Free memory was 161.5MB in the beginning and 150.4MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 13:20:25,350 INFO L158 Benchmark]: TraceAbstraction took 13393.52ms. Allocated memory was 187.7MB in the beginning and 252.7MB in the end (delta: 65.0MB). Free memory was 149.9MB in the beginning and 100.9MB in the end (delta: 49.1MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. [2022-04-27 13:20:25,351 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 0.09ms. Allocated memory is still 187.7MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 153.55ms. Allocated memory is still 187.7MB. Free memory was 137.4MB in the beginning and 163.0MB in the end (delta: -25.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.69ms. Allocated memory is still 187.7MB. Free memory was 163.0MB in the beginning and 161.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 240.44ms. Allocated memory is still 187.7MB. Free memory was 161.5MB in the beginning and 150.4MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 13393.52ms. Allocated memory was 187.7MB in the beginning and 252.7MB in the end (delta: 65.0MB). Free memory was 149.9MB in the beginning and 100.9MB in the end (delta: 49.1MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 290 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8 IncrementalHoareTripleChecker+Unchecked, 189 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 101 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 18, 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 18 PreInvPairs, 24 NumberOfFragments, 78 HoareAnnotationTreeSize, 18 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 5 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 22 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: z * x + 1 == y + x || !(\old(counter) <= 0) RESULT: Ultimate proved your program to be correct! [2022-04-27 13:20:25,368 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...