./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/nla-digbench-scaling/fermat2-ll_unwindbound2.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 2e2cde485588a76ffd9007a3156c09bf9b7ea2f13bf08ca050cf52c24b8b1e9f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:47:39,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:47:39,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:47:39,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:47:39,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:47:39,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:47:39,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:47:39,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:47:39,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:47:39,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:47:39,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:47:39,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:47:39,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:47:39,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:47:39,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:47:39,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:47:39,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:47:39,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:47:39,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:47:39,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:47:39,604 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:47:39,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:47:39,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:47:39,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:47:39,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:47:39,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:47:39,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:47:39,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:47:39,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:47:39,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:47:39,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:47:39,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:47:39,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:47:39,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:47:39,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:47:39,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:47:39,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:47:39,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:47:39,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:47:39,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:47:39,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:47:39,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:47:39,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 04:47:39,664 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:47:39,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:47:39,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:47:39,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:47:39,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:47:39,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:47:39,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:47:39,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:47:39,667 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:47:39,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:47:39,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:47:39,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 04:47:39,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:47:39,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:47:39,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:47:39,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:47:39,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:47:39,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:47:39,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:47:39,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:47:39,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:47:39,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:47:39,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:47:39,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:47:39,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:47:39,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:47:39,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:47:39,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:47:39,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 04:47:39,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 04:47:39,672 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:47:39,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:47:39,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:47:39,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e2cde485588a76ffd9007a3156c09bf9b7ea2f13bf08ca050cf52c24b8b1e9f [2022-07-12 04:47:39,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:47:39,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:47:39,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:47:39,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:47:39,940 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:47:39,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound2.c [2022-07-12 04:47:40,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d40766ef/2cd6caad3eea4ea9a6d5b546c0f2a289/FLAG9d3f6871a [2022-07-12 04:47:40,404 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:47:40,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound2.c [2022-07-12 04:47:40,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d40766ef/2cd6caad3eea4ea9a6d5b546c0f2a289/FLAG9d3f6871a [2022-07-12 04:47:40,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d40766ef/2cd6caad3eea4ea9a6d5b546c0f2a289 [2022-07-12 04:47:40,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:47:40,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:47:40,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:47:40,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:47:40,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:47:40,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:47:40" (1/1) ... [2022-07-12 04:47:40,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d61dd2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:40, skipping insertion in model container [2022-07-12 04:47:40,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:47:40" (1/1) ... [2022-07-12 04:47:40,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:47:40,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:47:40,965 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/nla-digbench-scaling/fermat2-ll_unwindbound2.c[524,537] [2022-07-12 04:47:40,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:47:40,991 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:47:41,006 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/nla-digbench-scaling/fermat2-ll_unwindbound2.c[524,537] [2022-07-12 04:47:41,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:47:41,031 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:47:41,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41 WrapperNode [2022-07-12 04:47:41,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:47:41,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:47:41,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:47:41,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:47:41,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,062 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2022-07-12 04:47:41,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:47:41,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:47:41,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:47:41,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:47:41,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:47:41,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:47:41,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:47:41,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:47:41,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (1/1) ... [2022-07-12 04:47:41,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:47:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:47:41,132 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) [2022-07-12 04:47:41,153 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 [2022-07-12 04:47:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:47:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 04:47:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 04:47:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 04:47:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:47:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:47:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:47:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:47:41,250 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:47:41,251 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:47:41,364 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:47:41,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:47:41,369 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 04:47:41,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:47:41 BoogieIcfgContainer [2022-07-12 04:47:41,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:47:41,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:47:41,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:47:41,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:47:41,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:47:40" (1/3) ... [2022-07-12 04:47:41,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115206f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:47:41, skipping insertion in model container [2022-07-12 04:47:41,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:47:41" (2/3) ... [2022-07-12 04:47:41,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115206f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:47:41, skipping insertion in model container [2022-07-12 04:47:41,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:47:41" (3/3) ... [2022-07-12 04:47:41,379 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound2.c [2022-07-12 04:47:41,390 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:47:41,391 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:47:41,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:47:41,429 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@6aa95172, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f385e93 [2022-07-12 04:47:41,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:47:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 04:47:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 04:47:41,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:47:41,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:47:41,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:47:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:47:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2022-07-12 04:47:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:47:41,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196303148] [2022-07-12 04:47:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:47:41,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:47:41,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255712460] [2022-07-12 04:47:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:41,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:41,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:47:41,531 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) [2022-07-12 04:47:41,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 04:47:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:47:41,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 04:47:41,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:47:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 04:47:41,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:47:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:47:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196303148] [2022-07-12 04:47:41,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:47:41,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255712460] [2022-07-12 04:47:41,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255712460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:47:41,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:47:41,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:47:41,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184101516] [2022-07-12 04:47:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:47:41,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:47:41,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:47:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:47:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:47:41,711 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 04:47:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:47:41,729 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-07-12 04:47:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:47:41,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-12 04:47:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:47:41,738 INFO L225 Difference]: With dead ends: 47 [2022-07-12 04:47:41,738 INFO L226 Difference]: Without dead ends: 21 [2022-07-12 04:47:41,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:47:41,754 INFO L413 NwaCegarLoop]: 29 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, 29 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 [2022-07-12 04:47:41,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:47:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-12 04:47:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-12 04:47:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 04:47:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-07-12 04:47:41,791 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2022-07-12 04:47:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:47:41,792 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-07-12 04:47:41,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 04:47:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-07-12 04:47:41,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 04:47:41,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:47:41,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:47:41,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 04:47:42,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 04:47:42,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:47:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:47:42,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1345709874, now seen corresponding path program 1 times [2022-07-12 04:47:42,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:47:42,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137119116] [2022-07-12 04:47:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:42,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:47:42,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:47:42,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570412006] [2022-07-12 04:47:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:42,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:42,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:47:42,023 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) [2022-07-12 04:47:42,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 04:47:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:47:42,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 04:47:42,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:47:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:47:42,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:47:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:47:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137119116] [2022-07-12 04:47:42,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:47:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570412006] [2022-07-12 04:47:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570412006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:47:42,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:47:42,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 04:47:42,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191026512] [2022-07-12 04:47:42,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:47:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 04:47:42,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:47:42,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 04:47:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:47:42,171 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:47:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:47:42,184 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-12 04:47:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 04:47:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-12 04:47:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:47:42,187 INFO L225 Difference]: With dead ends: 30 [2022-07-12 04:47:42,188 INFO L226 Difference]: Without dead ends: 23 [2022-07-12 04:47:42,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:47:42,189 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:47:42,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:47:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-12 04:47:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-12 04:47:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 04:47:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-12 04:47:42,199 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2022-07-12 04:47:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:47:42,200 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-12 04:47:42,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:47:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-12 04:47:42,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 04:47:42,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:47:42,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:47:42,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 04:47:42,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 04:47:42,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:47:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:47:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1347497334, now seen corresponding path program 1 times [2022-07-12 04:47:42,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:47:42,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339762108] [2022-07-12 04:47:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:42,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:47:42,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:47:42,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438784320] [2022-07-12 04:47:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:42,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:47:42,430 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) [2022-07-12 04:47:42,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 04:47:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:47:42,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 04:47:42,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:47:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:47:42,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:47:42,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:47:42,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339762108] [2022-07-12 04:47:42,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:47:42,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438784320] [2022-07-12 04:47:42,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438784320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:47:42,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:47:42,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:47:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62482865] [2022-07-12 04:47:42,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:47:42,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:47:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:47:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:47:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:47:42,636 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:47:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:47:43,115 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-07-12 04:47:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:47:43,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-12 04:47:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:47:43,117 INFO L225 Difference]: With dead ends: 35 [2022-07-12 04:47:43,117 INFO L226 Difference]: Without dead ends: 33 [2022-07-12 04:47:43,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:47:43,118 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 04:47:43,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 69 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 04:47:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-12 04:47:43,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-07-12 04:47:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 04:47:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-07-12 04:47:43,126 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19 [2022-07-12 04:47:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:47:43,126 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-07-12 04:47:43,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:47:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-07-12 04:47:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 04:47:43,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:47:43,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:47:43,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 04:47:43,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:43,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:47:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:47:43,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1636478750, now seen corresponding path program 1 times [2022-07-12 04:47:43,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:47:43,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446000132] [2022-07-12 04:47:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:43,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:47:43,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:47:43,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538848729] [2022-07-12 04:47:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:43,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:47:43,356 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) [2022-07-12 04:47:43,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 04:47:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:47:43,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 04:47:43,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:47:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:47:43,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:47:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:47:43,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:47:43,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446000132] [2022-07-12 04:47:43,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:47:43,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538848729] [2022-07-12 04:47:43,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538848729] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:47:43,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:47:43,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-12 04:47:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545380570] [2022-07-12 04:47:43,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:47:43,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 04:47:43,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:47:43,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 04:47:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:47:43,616 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 04:47:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:47:43,829 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-07-12 04:47:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:47:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2022-07-12 04:47:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:47:43,830 INFO L225 Difference]: With dead ends: 39 [2022-07-12 04:47:43,830 INFO L226 Difference]: Without dead ends: 34 [2022-07-12 04:47:43,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:47:43,832 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:47:43,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 114 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:47:43,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-12 04:47:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25. [2022-07-12 04:47:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 04:47:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-07-12 04:47:43,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2022-07-12 04:47:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:47:43,839 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-07-12 04:47:43,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 04:47:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-07-12 04:47:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-12 04:47:43,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:47:43,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:47:43,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 04:47:44,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:44,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:47:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:47:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash -126969667, now seen corresponding path program 1 times [2022-07-12 04:47:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:47:44,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196992404] [2022-07-12 04:47:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:47:44,052 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:47:44,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349544786] [2022-07-12 04:47:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:44,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:44,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:47:44,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:47:44,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 04:47:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:47:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 04:47:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:47:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:47:44,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:47:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:47:44,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:47:44,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196992404] [2022-07-12 04:47:44,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:47:44,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349544786] [2022-07-12 04:47:44,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349544786] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:47:44,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:47:44,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2022-07-12 04:47:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580017896] [2022-07-12 04:47:44,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:47:44,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:47:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:47:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:47:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:47:44,196 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 04:47:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:47:44,229 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-12 04:47:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 04:47:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2022-07-12 04:47:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:47:44,232 INFO L225 Difference]: With dead ends: 39 [2022-07-12 04:47:44,232 INFO L226 Difference]: Without dead ends: 34 [2022-07-12 04:47:44,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:47:44,236 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:47:44,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 62 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:47:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-12 04:47:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-12 04:47:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 04:47:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-07-12 04:47:44,253 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 28 [2022-07-12 04:47:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:47:44,254 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-07-12 04:47:44,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 04:47:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-07-12 04:47:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-12 04:47:44,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:47:44,255 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:47:44,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 04:47:44,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:44,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:47:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:47:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2051896210, now seen corresponding path program 2 times [2022-07-12 04:47:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:47:44,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549069553] [2022-07-12 04:47:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:47:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:47:44,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:47:44,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251143962] [2022-07-12 04:47:44,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 04:47:44,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:44,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:47:44,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:47:44,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 04:47:44,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 04:47:44,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-07-12 04:47:44,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 04:47:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 04:47:44,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 04:47:44,633 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 04:47:44,633 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:47:44,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 04:47:44,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:47:44,838 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-07-12 04:47:44,841 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:47:44,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:47:44 BoogieIcfgContainer [2022-07-12 04:47:44,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:47:44,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:47:44,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:47:44,865 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:47:44,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:47:41" (3/4) ... [2022-07-12 04:47:44,866 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 04:47:44,901 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 04:47:44,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:47:44,902 INFO L158 Benchmark]: Toolchain (without parser) took 4090.23ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 63.4MB in the beginning and 67.5MB in the end (delta: -4.1MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-07-12 04:47:44,902 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:47:44,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.33ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 53.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 04:47:44,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.44ms. Allocated memory is still 102.8MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:47:44,903 INFO L158 Benchmark]: Boogie Preprocessor took 36.27ms. Allocated memory is still 102.8MB. Free memory was 51.5MB in the beginning and 50.6MB in the end (delta: 974.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:47:44,903 INFO L158 Benchmark]: RCFGBuilder took 270.77ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 50.5MB in the beginning and 103.1MB in the end (delta: -52.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-07-12 04:47:44,904 INFO L158 Benchmark]: TraceAbstraction took 3491.65ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 70.5MB in the end (delta: 32.0MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-07-12 04:47:44,904 INFO L158 Benchmark]: Witness Printer took 36.91ms. Allocated memory is still 130.0MB. Free memory was 70.5MB in the beginning and 67.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 04:47:44,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.33ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 53.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.44ms. Allocated memory is still 102.8MB. Free memory was 53.1MB in the beginning and 51.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.27ms. Allocated memory is still 102.8MB. Free memory was 51.5MB in the beginning and 50.6MB in the end (delta: 974.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.77ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 50.5MB in the beginning and 103.1MB in the end (delta: -52.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3491.65ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 70.5MB in the end (delta: 32.0MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 36.91ms. Allocated memory is still 130.0MB. Free memory was 70.5MB in the beginning and 67.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [A=37, counter=0, R=7] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [A=37, counter=0, R=7] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [A=37, counter=0, r=12, R=7, u=15, v=1] [L34] EXPR counter++ VAL [A=37, counter=1, counter++=0, r=12, R=7, u=15, v=1] [L34] COND TRUE counter++<2 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=37, counter=1, R=7, r=12, u=15, v=1] [L36] COND FALSE !(!(r != 0)) VAL [A=37, counter=1, r=12, R=7, u=15, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=37, counter=1, R=7, r=11, u=15, v=3] [L34] EXPR counter++ VAL [A=37, counter=2, counter++=1, R=7, r=11, u=15, v=3] [L34] COND TRUE counter++<2 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=37, counter=2, r=11, R=7, u=15, v=3] [L36] COND FALSE !(!(r != 0)) VAL [A=37, counter=2, R=7, r=11, u=15, v=3] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=37, counter=2, r=8, R=7, u=15, v=5] [L34] EXPR counter++ VAL [A=37, counter=3, counter++=2, r=8, R=7, u=15, v=5] [L34] COND FALSE !(counter++<2) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, counter=3] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 331 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 219 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 112 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 10 NumberOfNonLiveVariables, 372 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 34/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 04:47:44,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE