/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/loops-crafted-1/nested5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:06:18,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:06:18,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:06:18,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:06:18,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:06:18,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:06:18,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:06:18,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:06:18,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:06:18,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:06:18,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:06:18,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:06:18,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:06:18,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:06:18,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:06:18,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:06:18,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:06:18,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:06:18,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:06:18,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:06:18,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:06:18,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:06:18,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:06:18,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:06:18,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:06:18,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:06:18,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:06:18,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:06:18,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:06:18,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:06:18,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:06:18,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:06:18,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:06:18,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:06:18,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:06:18,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:06:18,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:06:18,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:06:18,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:06:18,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:06:18,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:06:18,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:06:18,878 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:06:18,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:06:18,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:06:18,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:06:18,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:06:18,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:06:18,880 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:06:18,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:06:18,880 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:06:18,880 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:06:18,881 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:06:18,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:06:18,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:06:18,881 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:06:18,881 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:06:18,881 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:06:18,881 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:06:18,882 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:06:18,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:06:18,882 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:06:18,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:06:18,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:06:18,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:06:18,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:06:18,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:06:18,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:06:18,883 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:06:18,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:06:18,883 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:06:18,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:06:18,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:06:18,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:06:18,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:06:18,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:06:18,884 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:06:18,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:06:18,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:06:18,884 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:06:18,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:06:18,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:06:18,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:06:18,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:06:19,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:06:19,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:06:19,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:06:19,092 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:06:19,093 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:06:19,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/nested5-2.c [2023-03-31 23:06:20,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:06:20,437 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:06:20,438 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested5-2.c [2023-03-31 23:06:20,442 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c47c7c0c/4c01db9c8b21457a973623d2fe04ea8f/FLAG74e9017c1 [2023-03-31 23:06:20,455 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c47c7c0c/4c01db9c8b21457a973623d2fe04ea8f [2023-03-31 23:06:20,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:06:20,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:06:20,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:06:20,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:06:20,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:06:20,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13da1c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20, skipping insertion in model container [2023-03-31 23:06:20,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:06:20,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:06:20,585 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested5-2.c[321,334] [2023-03-31 23:06:20,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:06:20,604 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:06:20,612 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested5-2.c[321,334] [2023-03-31 23:06:20,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:06:20,626 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:06:20,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20 WrapperNode [2023-03-31 23:06:20,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:06:20,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:06:20,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:06:20,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:06:20,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:06:20,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:06:20,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:06:20,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:06:20,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (1/1) ... [2023-03-31 23:06:20,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:06:20,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:06:20,679 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) [2023-03-31 23:06:20,691 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 [2023-03-31 23:06:20,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:06:20,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:06:20,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:06:20,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:06:20,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:06:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:06:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:06:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:06:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:06:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:06:20,782 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:06:20,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:06:20,956 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:06:20,993 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:06:20,994 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:06:20,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:06:20 BoogieIcfgContainer [2023-03-31 23:06:20,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:06:20,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:06:20,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:06:21,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:06:21,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:06:20" (1/3) ... [2023-03-31 23:06:21,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ad1d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:06:21, skipping insertion in model container [2023-03-31 23:06:21,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:06:20" (2/3) ... [2023-03-31 23:06:21,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ad1d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:06:21, skipping insertion in model container [2023-03-31 23:06:21,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:06:20" (3/3) ... [2023-03-31 23:06:21,002 INFO L112 eAbstractionObserver]: Analyzing ICFG nested5-2.c [2023-03-31 23:06:21,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:06:21,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:06:21,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:06:21,096 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4bbcae84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:06:21,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:06:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:06:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 23:06:21,107 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:21,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:21,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:21,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 310324301, now seen corresponding path program 1 times [2023-03-31 23:06:21,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285475418] [2023-03-31 23:06:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:21,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285475418] [2023-03-31 23:06:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285475418] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:06:21,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:06:21,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:06:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137696553] [2023-03-31 23:06:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:06:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:06:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:21,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:06:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:06:21,430 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:06:21,470 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2023-03-31 23:06:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:06:21,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-31 23:06:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:06:21,477 INFO L225 Difference]: With dead ends: 43 [2023-03-31 23:06:21,477 INFO L226 Difference]: Without dead ends: 23 [2023-03-31 23:06:21,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:06:21,482 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:06:21,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 33 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:06:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-03-31 23:06:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-03-31 23:06:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 23:06:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-03-31 23:06:21,508 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2023-03-31 23:06:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:06:21,509 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-03-31 23:06:21,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-03-31 23:06:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 23:06:21,510 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:21,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:21,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:06:21,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:21,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash 728571370, now seen corresponding path program 1 times [2023-03-31 23:06:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:21,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283783563] [2023-03-31 23:06:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:21,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:21,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283783563] [2023-03-31 23:06:21,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283783563] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:06:21,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093295291] [2023-03-31 23:06:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:21,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:06:21,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:06:21,667 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) [2023-03-31 23:06:21,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:06:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:21,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-31 23:06:21,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:06:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:21,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:06:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:21,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093295291] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:06:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [210341392] [2023-03-31 23:06:21,816 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-03-31 23:06:21,816 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:06:21,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:06:21,825 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:06:21,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:06:21,931 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:06:22,019 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 23:06:22,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:06:22,076 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:06:22,335 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '218#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 23:06:22,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:06:22,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:06:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-03-31 23:06:22,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427899940] [2023-03-31 23:06:22,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:06:22,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:06:22,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:06:22,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-03-31 23:06:22,339 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:06:22,400 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2023-03-31 23:06:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:06:22,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 23:06:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:06:22,402 INFO L225 Difference]: With dead ends: 40 [2023-03-31 23:06:22,403 INFO L226 Difference]: Without dead ends: 26 [2023-03-31 23:06:22,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-03-31 23:06:22,407 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:06:22,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:06:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-03-31 23:06:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2023-03-31 23:06:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 23:06:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-03-31 23:06:22,415 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2023-03-31 23:06:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:06:22,415 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-03-31 23:06:22,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-03-31 23:06:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 23:06:22,416 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:22,416 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:22,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:06:22,617 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 [2023-03-31 23:06:22,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:22,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash -683857011, now seen corresponding path program 2 times [2023-03-31 23:06:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:22,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392103986] [2023-03-31 23:06:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:22,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392103986] [2023-03-31 23:06:22,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392103986] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:06:22,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070146237] [2023-03-31 23:06:22,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 23:06:22,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:06:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:06:22,829 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) [2023-03-31 23:06:22,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:06:22,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 23:06:22,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:06:22,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2023-03-31 23:06:22,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:06:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:22,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:06:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 23:06:23,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070146237] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:06:23,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [474453171] [2023-03-31 23:06:23,063 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-03-31 23:06:23,063 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:06:23,063 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:06:23,063 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:06:23,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:06:23,085 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:06:23,121 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 23:06:23,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:06:23,141 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:06:23,429 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '454#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 23:06:23,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:06:23,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:06:23,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 16 [2023-03-31 23:06:23,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060266074] [2023-03-31 23:06:23,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:06:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 23:06:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:23,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 23:06:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2023-03-31 23:06:23,431 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:06:23,686 INFO L93 Difference]: Finished difference Result 69 states and 96 transitions. [2023-03-31 23:06:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-31 23:06:23,687 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-03-31 23:06:23,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:06:23,689 INFO L225 Difference]: With dead ends: 69 [2023-03-31 23:06:23,689 INFO L226 Difference]: Without dead ends: 52 [2023-03-31 23:06:23,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-03-31 23:06:23,690 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 55 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:06:23,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 290 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:06:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-03-31 23:06:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 31. [2023-03-31 23:06:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:06:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-03-31 23:06:23,699 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2023-03-31 23:06:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:06:23,700 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-03-31 23:06:23,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-03-31 23:06:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 23:06:23,721 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:23,721 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:23,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 23:06:23,922 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 [2023-03-31 23:06:23,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:23,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash -26278230, now seen corresponding path program 3 times [2023-03-31 23:06:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160561188] [2023-03-31 23:06:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:24,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160561188] [2023-03-31 23:06:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160561188] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:06:24,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513230730] [2023-03-31 23:06:24,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 23:06:24,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:06:24,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:06:24,083 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) [2023-03-31 23:06:24,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 23:06:24,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 23:06:24,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:06:24,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2023-03-31 23:06:24,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:06:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:24,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:06:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:24,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513230730] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:06:24,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070248757] [2023-03-31 23:06:24,245 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-03-31 23:06:24,245 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:06:24,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:06:24,245 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:06:24,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:06:24,264 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:06:24,294 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 23:06:24,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:06:24,315 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:06:24,580 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '762#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 23:06:24,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:06:24,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:06:24,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-03-31 23:06:24,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359633901] [2023-03-31 23:06:24,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:06:24,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-31 23:06:24,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:24,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-31 23:06:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-03-31 23:06:24,583 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:25,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:06:25,018 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2023-03-31 23:06:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-31 23:06:25,019 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-03-31 23:06:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:06:25,021 INFO L225 Difference]: With dead ends: 68 [2023-03-31 23:06:25,021 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 23:06:25,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2023-03-31 23:06:25,022 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:06:25,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 129 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:06:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 23:06:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-03-31 23:06:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:06:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-03-31 23:06:25,031 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2023-03-31 23:06:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:06:25,031 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-03-31 23:06:25,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-03-31 23:06:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 23:06:25,032 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:25,032 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:25,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 23:06:25,238 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 [2023-03-31 23:06:25,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:25,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1296320470, now seen corresponding path program 4 times [2023-03-31 23:06:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624452615] [2023-03-31 23:06:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:25,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624452615] [2023-03-31 23:06:25,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624452615] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:06:25,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76408248] [2023-03-31 23:06:25,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-03-31 23:06:25,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:06:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:06:25,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:06:25,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 23:06:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:25,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjunts are in the unsatisfiable core [2023-03-31 23:06:25,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:06:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:25,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:06:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:26,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76408248] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:06:26,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1105434605] [2023-03-31 23:06:26,060 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-03-31 23:06:26,061 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:06:26,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:06:26,061 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:06:26,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:06:26,087 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:06:26,112 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 23:06:26,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:06:26,137 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:06:26,517 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1154#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 23:06:26,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:06:26,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:06:26,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-03-31 23:06:26,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695119227] [2023-03-31 23:06:26,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:06:26,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-03-31 23:06:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:26,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-03-31 23:06:26,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 23:06:26,520 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:06:37,496 INFO L93 Difference]: Finished difference Result 91 states and 124 transitions. [2023-03-31 23:06:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-03-31 23:06:37,496 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-03-31 23:06:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:06:37,497 INFO L225 Difference]: With dead ends: 91 [2023-03-31 23:06:37,497 INFO L226 Difference]: Without dead ends: 58 [2023-03-31 23:06:37,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=745, Invalid=2011, Unknown=0, NotChecked=0, Total=2756 [2023-03-31 23:06:37,500 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:06:37,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 250 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:06:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-03-31 23:06:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2023-03-31 23:06:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.173913043478261) internal successors, (54), 47 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:06:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2023-03-31 23:06:37,511 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 27 [2023-03-31 23:06:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:06:37,511 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2023-03-31 23:06:37,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2023-03-31 23:06:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-31 23:06:37,512 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:06:37,512 INFO L195 NwaCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:06:37,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-03-31 23:06:37,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:06:37,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:06:37,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:06:37,719 INFO L85 PathProgramCache]: Analyzing trace with hash 834181930, now seen corresponding path program 5 times [2023-03-31 23:06:37,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:06:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729704021] [2023-03-31 23:06:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:06:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:06:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:06:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:38,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:06:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729704021] [2023-03-31 23:06:38,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729704021] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:06:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399429442] [2023-03-31 23:06:38,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 23:06:38,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:06:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:06:38,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:06:38,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 23:06:39,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-03-31 23:06:39,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:06:39,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 61 conjunts are in the unsatisfiable core [2023-03-31 23:06:39,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:06:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:39,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:06:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:06:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399429442] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:06:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928559298] [2023-03-31 23:06:40,863 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-03-31 23:06:40,863 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:06:40,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:06:40,864 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:06:40,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:06:40,880 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:06:40,900 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2023-03-31 23:06:40,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:06:40,913 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:06:41,503 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1768#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 23:06:41,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:06:41,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:06:41,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2023-03-31 23:06:41,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102477266] [2023-03-31 23:06:41,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:06:41,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-03-31 23:06:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:06:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-03-31 23:06:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=3967, Unknown=0, NotChecked=0, Total=5112 [2023-03-31 23:06:41,508 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 63 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:06:43,968 WARN L839 $PredicateComparison]: unable to prove that (and (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false