./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/vnew2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/vnew2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:56:02,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:56:02,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:56:02,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:56:02,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:56:02,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:56:02,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:56:02,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:56:02,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:56:02,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:56:02,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:56:02,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:56:02,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:56:02,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:56:02,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:56:02,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:56:02,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:56:02,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:56:02,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:56:02,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:56:02,615 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:56:02,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:56:02,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:56:02,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:56:02,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:56:02,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:56:02,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:56:02,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:56:02,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:56:02,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:56:02,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:56:02,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:56:02,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:56:02,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:56:02,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:56:02,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:56:02,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:56:02,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:56:02,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:56:02,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:56:02,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:56:02,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:56:02,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:56:02,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:56:02,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:56:02,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:56:02,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:56:02,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:56:02,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:56:02,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:56:02,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:56:02,673 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:56:02,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:56:02,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:56:02,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:56:02,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:56:02,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:56:02,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:56:02,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:56:02,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:56:02,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:56:02,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:56:02,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:56:02,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:56:02,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:56:02,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:56:02,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:56:02,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:56:02,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:56:02,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:56:02,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:56:02,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:56:02,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:56:02,677 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:56:02,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:56:02,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:56:02,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f [2022-07-21 02:56:02,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:56:02,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:56:02,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:56:02,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:56:02,954 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:56:02,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/vnew2.c [2022-07-21 02:56:02,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760728c06/6ff0e942f47444a98e9bac1c484a05c3/FLAGbe8d04b38 [2022-07-21 02:56:03,308 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:56:03,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/vnew2.c [2022-07-21 02:56:03,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760728c06/6ff0e942f47444a98e9bac1c484a05c3/FLAGbe8d04b38 [2022-07-21 02:56:03,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760728c06/6ff0e942f47444a98e9bac1c484a05c3 [2022-07-21 02:56:03,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:56:03,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:56:03,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:56:03,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:56:03,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:56:03,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327d68b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03, skipping insertion in model container [2022-07-21 02:56:03,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:56:03,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:56:03,853 WARN L230 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/vnew2.c[403,416] [2022-07-21 02:56:03,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:56:03,872 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:56:03,881 WARN L230 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/vnew2.c[403,416] [2022-07-21 02:56:03,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:56:03,931 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:56:03,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03 WrapperNode [2022-07-21 02:56:03,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:56:03,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:56:03,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:56:03,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:56:03,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,961 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-07-21 02:56:03,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:56:03,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:56:03,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:56:03,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:56:03,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:03,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:04,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:56:04,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:56:04,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:56:04,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:56:04,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (1/1) ... [2022-07-21 02:56:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:56:04,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:56:04,036 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) [2022-07-21 02:56:04,054 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 [2022-07-21 02:56:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:56:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:56:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:56:04,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:56:04,117 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:56:04,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:56:04,232 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:56:04,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:56:04,237 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 02:56:04,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:56:04 BoogieIcfgContainer [2022-07-21 02:56:04,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:56:04,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:56:04,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:56:04,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:56:04,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:56:03" (1/3) ... [2022-07-21 02:56:04,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4111648c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:56:04, skipping insertion in model container [2022-07-21 02:56:04,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:56:03" (2/3) ... [2022-07-21 02:56:04,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4111648c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:56:04, skipping insertion in model container [2022-07-21 02:56:04,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:56:04" (3/3) ... [2022-07-21 02:56:04,244 INFO L111 eAbstractionObserver]: Analyzing ICFG vnew2.c [2022-07-21 02:56:04,253 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:56:04,253 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:56:04,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:56:04,298 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@261a24e6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@442bbf11 [2022-07-21 02:56:04,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:56:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-07-21 02:56:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:56:04,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:56:04,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:56:04,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:56:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:56:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1807091466, now seen corresponding path program 1 times [2022-07-21 02:56:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:56:04,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161507491] [2022-07-21 02:56:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:56:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:56:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:56:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:56:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:56:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161507491] [2022-07-21 02:56:04,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161507491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:56:04,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:56:04,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:56:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661893011] [2022-07-21 02:56:04,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:56:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:56:04,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:56:04,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:56:04,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:56:04,459 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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 has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-21 02:56:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:56:04,469 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-07-21 02:56:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:56:04,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2022-07-21 02:56:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:56:04,476 INFO L225 Difference]: With dead ends: 22 [2022-07-21 02:56:04,476 INFO L226 Difference]: Without dead ends: 8 [2022-07-21 02:56:04,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:56:04,485 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:56:04,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:56:04,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-21 02:56:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-21 02:56:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-07-21 02:56:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-07-21 02:56:04,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2022-07-21 02:56:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:56:04,507 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-07-21 02:56:04,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-21 02:56:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-07-21 02:56:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 02:56:04,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:56:04,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:56:04,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:56:04,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:56:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:56:04,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1806972302, now seen corresponding path program 1 times [2022-07-21 02:56:04,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:56:04,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112602882] [2022-07-21 02:56:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:56:04,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:56:04,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 02:56:04,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529699154] [2022-07-21 02:56:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:56:04,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:56:04,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:56:04,537 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) [2022-07-21 02:56:04,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:56:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:56:04,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 02:56:04,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:56:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:56:04,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:56:04,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:56:04,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112602882] [2022-07-21 02:56:04,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 02:56:04,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529699154] [2022-07-21 02:56:04,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529699154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:56:04,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:56:04,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:56:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386579332] [2022-07-21 02:56:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:56:04,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 02:56:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:56:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 02:56:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:56:04,628 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-21 02:56:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:56:04,647 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-07-21 02:56:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:56:04,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2022-07-21 02:56:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:56:04,648 INFO L225 Difference]: With dead ends: 13 [2022-07-21 02:56:04,648 INFO L226 Difference]: Without dead ends: 9 [2022-07-21 02:56:04,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:56:04,649 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:56:04,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:56:04,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-21 02:56:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-21 02:56:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-07-21 02:56:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-21 02:56:04,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-07-21 02:56:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:56:04,652 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-21 02:56:04,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-21 02:56:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-21 02:56:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 02:56:04,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:56:04,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:56:04,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 02:56:04,867 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 [2022-07-21 02:56:04,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:56:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:56:04,868 INFO L85 PathProgramCache]: Analyzing trace with hash 183172310, now seen corresponding path program 1 times [2022-07-21 02:56:04,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:56:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186983420] [2022-07-21 02:56:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:56:04,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:56:04,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 02:56:04,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337796678] [2022-07-21 02:56:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:56:04,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:56:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:56:04,908 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) [2022-07-21 02:56:04,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 02:56:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:56:04,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 02:56:04,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:56:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:56:05,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:56:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:56:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:56:05,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186983420] [2022-07-21 02:56:05,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 02:56:05,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337796678] [2022-07-21 02:56:05,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337796678] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:56:05,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 02:56:05,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-21 02:56:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667453667] [2022-07-21 02:56:05,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 02:56:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 02:56:05,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:56:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 02:56:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-21 02:56:05,539 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-07-21 02:56:09,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 02:56:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:56:11,897 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-07-21 02:56:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 02:56:11,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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) Word has length 8 [2022-07-21 02:56:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:56:11,898 INFO L225 Difference]: With dead ends: 20 [2022-07-21 02:56:11,898 INFO L226 Difference]: Without dead ends: 12 [2022-07-21 02:56:11,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-07-21 02:56:11,900 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 02:56:11,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 02:56:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-21 02:56:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-21 02:56:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-07-21 02:56:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-07-21 02:56:11,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-07-21 02:56:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:56:11,903 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-07-21 02:56:11,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-07-21 02:56:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-07-21 02:56:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 02:56:11,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:56:11,903 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:56:11,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 02:56:12,111 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 [2022-07-21 02:56:12,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:56:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:56:12,112 INFO L85 PathProgramCache]: Analyzing trace with hash -422590578, now seen corresponding path program 2 times [2022-07-21 02:56:12,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:56:12,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117950960] [2022-07-21 02:56:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:56:12,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:56:12,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 02:56:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989291599] [2022-07-21 02:56:12,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 02:56:12,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:56:12,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:56:12,149 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) [2022-07-21 02:56:12,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 02:56:12,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 02:56:12,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:56:12,198 WARN L261 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-21 02:56:12,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:56:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:56:12,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:56:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:56:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:56:13,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117950960] [2022-07-21 02:56:13,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 02:56:13,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989291599] [2022-07-21 02:56:13,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989291599] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:56:13,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 02:56:13,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-07-21 02:56:13,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903876740] [2022-07-21 02:56:13,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 02:56:13,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 02:56:13,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:56:13,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 02:56:13,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-07-21 02:56:13,658 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-07-21 02:56:15,749 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296)) (.cse3 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse7 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse2 (mod (+ 2 c_~SIZE~0) 4294967296)) (.cse0 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 9) 4294967296))) (and (= .cse0 .cse1) (not (= (mod (mod .cse0 .cse2) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse1))) (<= (div (+ .cse3 (* (- 1) .cse0)) (- 4294967296)) 0)) (= .cse4 .cse5) (= .cse5 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (not (= (mod (mod .cse4 .cse2) 4294967296) 0)) (or (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 6) 4294967296))) (and (= .cse6 (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (= .cse6 .cse3) (not (= (mod (mod .cse3 .cse2) 4294967296) 0)))) (<= (div (+ .cse7 (* (- 1) .cse3)) (- 4294967296)) 0)) (or (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 3) 4294967296))) (and (= .cse8 (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse7 .cse2) 4294967296) 0)) (= .cse7 .cse8))) (<= (div (+ .cse4 (* (- 1) .cse7)) (- 4294967296)) 0)) (= 20000001 c_~SIZE~0) (let ((.cse9 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or (let ((.cse10 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296))) (and (= .cse9 .cse10) (not (= (mod (mod .cse9 .cse2) 4294967296) 0)) (= (mod (+ 12 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse10))) (<= (div (+ .cse0 (* (- 1) .cse9)) (- 4294967296)) 0))))) is different from false [2022-07-21 02:56:24,826 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 83 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 02:56:26,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 02:56:27,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 02:56:39,472 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 78 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 02:57:03,168 WARN L233 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 81 DAG size of output: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 02:57:12,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 02:57:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:57:22,102 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-07-21 02:57:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 02:57:22,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) Word has length 11 [2022-07-21 02:57:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:57:22,102 INFO L225 Difference]: With dead ends: 30 [2022-07-21 02:57:22,102 INFO L226 Difference]: Without dead ends: 18 [2022-07-21 02:57:22,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 60.7s TimeCoverageRelationStatistics Valid=219, Invalid=535, Unknown=6, NotChecked=52, Total=812 [2022-07-21 02:57:22,104 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-21 02:57:22,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 25 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 100 Invalid, 1 Unknown, 2 Unchecked, 8.9s Time] [2022-07-21 02:57:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-21 02:57:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-21 02:57:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2022-07-21 02:57:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-07-21 02:57:22,108 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-07-21 02:57:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:57:22,108 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-07-21 02:57:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-07-21 02:57:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-07-21 02:57:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 02:57:22,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:57:22,109 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:57:22,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 02:57:22,319 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 [2022-07-21 02:57:22,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:57:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:57:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1035092622, now seen corresponding path program 3 times [2022-07-21 02:57:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:57:22,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566154034] [2022-07-21 02:57:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:57:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:57:22,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 02:57:22,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513231687] [2022-07-21 02:57:22,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 02:57:22,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:57:22,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:57:22,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:57:22,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 02:57:22,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-21 02:57:22,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 02:57:22,596 WARN L261 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-21 02:57:22,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:57:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:57:22,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 02:57:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:57:30,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:57:30,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566154034] [2022-07-21 02:57:30,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 02:57:30,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513231687] [2022-07-21 02:57:30,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513231687] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 02:57:30,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 02:57:30,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-21 02:57:30,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073620676] [2022-07-21 02:57:30,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 02:57:30,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 02:57:30,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:57:30,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 02:57:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2022-07-21 02:57:30,573 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 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) [2022-07-21 02:57:32,722 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse9 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296)) (.cse3 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse7 (mod (+ 21 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse0 (mod (+ 15 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse19 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 18) 4294967296)) (.cse15 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse16 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse8 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse13 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 27) 4294967296)) (.cse2 (mod (+ 2 c_~SIZE~0) 4294967296)) (.cse5 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 24) 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (and (or (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 15) 4294967296))) (and (= .cse0 .cse1) (= .cse1 (mod (+ 15 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse0 .cse2) 4294967296) 0)))) (not (< .cse3 .cse4))) (or (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 24) 4294967296))) (and (not (= (mod (mod .cse5 .cse2) 4294967296) 0)) (= .cse6 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 24) 4294967296)) (= .cse6 .cse5))) (not (< .cse7 .cse4))) (= .cse8 .cse9) (or (not (< .cse10 .cse4)) (let ((.cse11 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 30) 4294967296)) (.cse12 (mod (+ 30 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (= (mod (+ 30 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse11) (= .cse12 .cse11) (not (= (mod (mod .cse12 .cse2) 4294967296) 0))))) (or (not (< .cse13 .cse4)) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 6) 4294967296))) (and (= .cse14 (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (= .cse14 .cse15) (not (= (mod (mod .cse15 .cse2) 4294967296) 0))))) (= .cse9 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (or (not (< .cse16 .cse4)) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296))) (and (= .cse3 .cse17) (not (= (mod (mod .cse3 .cse2) 4294967296) 0)) (= (mod (+ 12 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse17)))) (not (= (mod (mod .cse8 .cse2) 4294967296) 0)) (or (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 21) 4294967296))) (and (= (mod (+ 21 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse18) (not (= (mod (mod .cse7 .cse2) 4294967296) 0)) (= .cse18 .cse7))) (not (< .cse19 .cse4))) (or (not (< .cse0 .cse4)) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 18) 4294967296))) (and (not (= (mod (mod .cse19 .cse2) 4294967296) 0)) (= .cse20 .cse19) (= .cse20 (mod (+ 18 |c_ULTIMATE.start_main_~k~0#1|) 4294967296))))) (or (not (< .cse15 .cse4)) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 9) 4294967296))) (and (= .cse16 .cse21) (not (= (mod (mod .cse16 .cse2) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse21)))) (= 20000001 c_~SIZE~0) (or (not (< .cse8 .cse4)) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 3) 4294967296))) (and (= .cse22 (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse13 .cse2) 4294967296) 0)) (= .cse13 .cse22)))) (or (let ((.cse23 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 27) 4294967296))) (and (= (mod (+ 27 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse23) (= .cse10 .cse23) (not (= (mod (mod .cse10 .cse2) 4294967296) 0)))) (not (< .cse5 .cse4))))) is different from false