./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound100.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/nla-digbench-scaling/bresenham-ll_unwindbound100.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 86018b7f3e582b94d83913c12d8eaea893434e1e96da49ea035805521496eb67 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:05:05,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:05:05,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:05:05,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:05:05,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:05:05,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:05:05,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:05:05,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:05:05,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:05:05,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:05:05,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:05:05,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:05:05,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:05:05,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:05:05,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:05:05,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:05:05,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:05:05,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:05:05,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:05:05,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:05:05,572 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:05:05,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:05:05,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:05:05,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:05:05,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:05:05,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:05:05,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:05:05,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:05:05,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:05:05,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:05:05,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:05:05,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:05:05,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:05:05,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:05:05,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:05:05,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:05:05,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:05:05,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:05:05,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:05:05,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:05:05,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:05:05,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:05:05,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:05:05,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:05:05,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:05:05,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:05:05,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:05:05,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:05:05,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:05:05,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:05:05,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:05:05,640 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:05:05,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:05:05,641 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:05:05,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:05:05,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:05:05,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:05:05,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:05:05,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:05:05,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:05:05,643 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:05:05,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:05:05,643 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:05:05,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:05:05,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:05:05,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:05:05,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:05:05,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:05:05,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:05:05,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:05:05,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:05:05,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:05:05,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:05:05,646 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:05:05,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:05:05,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:05:05,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86018b7f3e582b94d83913c12d8eaea893434e1e96da49ea035805521496eb67 [2022-07-21 03:05:05,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:05:05,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:05:05,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:05:05,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:05:05,980 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:05:05,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound100.c [2022-07-21 03:05:06,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6f649939/ce4473d96bc14c2d9513cd925d191f5a/FLAG3ba982fe7 [2022-07-21 03:05:06,441 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:05:06,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound100.c [2022-07-21 03:05:06,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6f649939/ce4473d96bc14c2d9513cd925d191f5a/FLAG3ba982fe7 [2022-07-21 03:05:06,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6f649939/ce4473d96bc14c2d9513cd925d191f5a [2022-07-21 03:05:06,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:05:06,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:05:06,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:05:06,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:05:06,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:05:06,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:05:06" (1/1) ... [2022-07-21 03:05:06,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3450bc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:06, skipping insertion in model container [2022-07-21 03:05:06,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:05:06" (1/1) ... [2022-07-21 03:05:06,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:05:06,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:05:06,968 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/bresenham-ll_unwindbound100.c[597,610] [2022-07-21 03:05:06,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:05:07,006 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:05:07,055 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/bresenham-ll_unwindbound100.c[597,610] [2022-07-21 03:05:07,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:05:07,086 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:05:07,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07 WrapperNode [2022-07-21 03:05:07,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:05:07,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:05:07,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:05:07,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:05:07,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,117 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-07-21 03:05:07,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:05:07,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:05:07,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:05:07,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:05:07,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:05:07,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:05:07,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:05:07,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:05:07,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (1/1) ... [2022-07-21 03:05:07,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:05:07,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:07,188 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 03:05:07,221 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 03:05:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:05:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:05:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:05:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:05:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:05:07,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:05:07,295 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:05:07,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:05:07,430 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:05:07,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:05:07,436 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:05:07,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:05:07 BoogieIcfgContainer [2022-07-21 03:05:07,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:05:07,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:05:07,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:05:07,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:05:07,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:05:06" (1/3) ... [2022-07-21 03:05:07,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24feda28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:05:07, skipping insertion in model container [2022-07-21 03:05:07,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:05:07" (2/3) ... [2022-07-21 03:05:07,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24feda28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:05:07, skipping insertion in model container [2022-07-21 03:05:07,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:05:07" (3/3) ... [2022-07-21 03:05:07,444 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound100.c [2022-07-21 03:05:07,456 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:05:07,456 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:05:07,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:05:07,548 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@4721cc0b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49d464a6 [2022-07-21 03:05:07,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:05:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 03:05:07,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:07,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:07,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-07-21 03:05:07,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:07,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304866732] [2022-07-21 03:05:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:07,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:07,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271504430] [2022-07-21 03:05:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:07,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:07,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:07,691 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 03:05:07,692 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 03:05:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:07,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 03:05:07,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:07,928 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 03:05:07,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:05:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:07,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304866732] [2022-07-21 03:05:07,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:07,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271504430] [2022-07-21 03:05:07,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271504430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:05:07,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:05:07,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 03:05:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403996016] [2022-07-21 03:05:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:05:07,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 03:05:07,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 03:05:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:05:07,973 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:05:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:08,111 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-07-21 03:05:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 03:05:08,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 03:05:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:08,119 INFO L225 Difference]: With dead ends: 54 [2022-07-21 03:05:08,119 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 03:05:08,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 03:05:08,124 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:08,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:05:08,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 03:05:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-07-21 03:05:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-07-21 03:05:08,155 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-07-21 03:05:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:08,156 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-07-21 03:05:08,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:05:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-07-21 03:05:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 03:05:08,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:08,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:08,181 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 03:05:08,378 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 [2022-07-21 03:05:08,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-07-21 03:05:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:08,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585945908] [2022-07-21 03:05:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:08,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:08,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:08,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510652018] [2022-07-21 03:05:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:08,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:08,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:08,397 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 03:05:08,398 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 03:05:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:08,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 03:05:08,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:08,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 03:05:08,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:08,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585945908] [2022-07-21 03:05:08,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:08,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510652018] [2022-07-21 03:05:08,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510652018] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:08,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:08,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-07-21 03:05:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740418758] [2022-07-21 03:05:08,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:08,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 03:05:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 03:05:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 03:05:08,687 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:08,972 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-07-21 03:05:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 03:05:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-21 03:05:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:08,974 INFO L225 Difference]: With dead ends: 41 [2022-07-21 03:05:08,974 INFO L226 Difference]: Without dead ends: 34 [2022-07-21 03:05:08,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-21 03:05:08,976 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:08,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 03:05:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-21 03:05:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-07-21 03:05:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 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) [2022-07-21 03:05:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-21 03:05:08,984 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2022-07-21 03:05:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:08,984 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-21 03:05:08,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-21 03:05:08,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 03:05:08,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:08,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:09,012 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 03:05:09,201 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 [2022-07-21 03:05:09,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2022-07-21 03:05:09,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:09,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871158326] [2022-07-21 03:05:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:09,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:09,214 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:09,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304916521] [2022-07-21 03:05:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:09,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:09,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:09,218 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 03:05:09,220 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 03:05:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:09,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 03:05:09,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:09,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:05:09,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:09,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871158326] [2022-07-21 03:05:09,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304916521] [2022-07-21 03:05:09,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304916521] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:09,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:09,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-07-21 03:05:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895961354] [2022-07-21 03:05:09,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:09,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 03:05:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 03:05:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-21 03:05:09,339 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:09,396 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-07-21 03:05:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 03:05:09,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-07-21 03:05:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:09,399 INFO L225 Difference]: With dead ends: 73 [2022-07-21 03:05:09,400 INFO L226 Difference]: Without dead ends: 67 [2022-07-21 03:05:09,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 03:05:09,403 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:09,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 100 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:05:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-21 03:05:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2022-07-21 03:05:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 03:05:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-07-21 03:05:09,414 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2022-07-21 03:05:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:09,414 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-07-21 03:05:09,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:05:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-07-21 03:05:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 03:05:09,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:09,420 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:09,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:09,627 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 [2022-07-21 03:05:09,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2022-07-21 03:05:09,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:09,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753471317] [2022-07-21 03:05:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:09,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:09,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:09,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42986980] [2022-07-21 03:05:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:09,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:09,641 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 03:05:09,643 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 03:05:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:09,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 03:05:09,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 03:05:09,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 03:05:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:10,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753471317] [2022-07-21 03:05:10,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:10,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42986980] [2022-07-21 03:05:10,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42986980] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:10,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:10,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-07-21 03:05:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231980339] [2022-07-21 03:05:10,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:10,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 03:05:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:10,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 03:05:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-07-21 03:05:10,375 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 03:05:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:11,030 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2022-07-21 03:05:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 03:05:11,039 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-07-21 03:05:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:11,041 INFO L225 Difference]: With dead ends: 81 [2022-07-21 03:05:11,041 INFO L226 Difference]: Without dead ends: 73 [2022-07-21 03:05:11,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=216, Invalid=1116, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 03:05:11,043 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:11,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 106 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 271 Invalid, 0 Unknown, 90 Unchecked, 0.2s Time] [2022-07-21 03:05:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-21 03:05:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2022-07-21 03:05:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:05:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-07-21 03:05:11,056 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2022-07-21 03:05:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:11,057 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-07-21 03:05:11,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 03:05:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-07-21 03:05:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 03:05:11,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:11,058 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:11,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 03:05:11,259 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 [2022-07-21 03:05:11,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2021783820, now seen corresponding path program 1 times [2022-07-21 03:05:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937485348] [2022-07-21 03:05:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:11,270 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:11,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911213500] [2022-07-21 03:05:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:11,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:11,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:11,272 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) [2022-07-21 03:05:11,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 03:05:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:11,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 03:05:11,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 03:05:19,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 03:05:19,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:19,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937485348] [2022-07-21 03:05:19,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:19,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911213500] [2022-07-21 03:05:19,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911213500] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:19,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:19,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-07-21 03:05:19,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85438716] [2022-07-21 03:05:19,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:19,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 03:05:19,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 03:05:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2022-07-21 03:05:19,673 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 03:05:21,682 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 03:05:25,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:05:27,732 WARN L534 Checker$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 03:05:29,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:05:31,794 WARN L534 Checker$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 03:05:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:34,017 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2022-07-21 03:05:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 03:05:34,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-21 03:05:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:34,019 INFO L225 Difference]: With dead ends: 92 [2022-07-21 03:05:34,019 INFO L226 Difference]: Without dead ends: 86 [2022-07-21 03:05:34,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-07-21 03:05:34,020 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:34,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 116 Invalid, 5 Unknown, 0 Unchecked, 10.1s Time] [2022-07-21 03:05:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-21 03:05:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2022-07-21 03:05:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.173913043478261) internal successors, (81), 69 states have internal predecessors, (81), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 03:05:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2022-07-21 03:05:34,049 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 35 [2022-07-21 03:05:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:34,050 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2022-07-21 03:05:34,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 03:05:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2022-07-21 03:05:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 03:05:34,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:34,055 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:34,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:34,273 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 [2022-07-21 03:05:34,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2132634866, now seen corresponding path program 1 times [2022-07-21 03:05:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:34,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412241557] [2022-07-21 03:05:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:34,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:34,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882287833] [2022-07-21 03:05:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:34,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:34,292 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) [2022-07-21 03:05:34,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 03:05:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:05:34,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:05:34,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 03:05:34,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 03:05:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:34,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412241557] [2022-07-21 03:05:34,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:34,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882287833] [2022-07-21 03:05:34,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882287833] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:34,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:34,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-21 03:05:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585709871] [2022-07-21 03:05:34,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:34,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 03:05:34,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 03:05:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-21 03:05:34,633 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:05:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:34,793 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2022-07-21 03:05:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 03:05:34,793 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-07-21 03:05:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:34,794 INFO L225 Difference]: With dead ends: 93 [2022-07-21 03:05:34,794 INFO L226 Difference]: Without dead ends: 87 [2022-07-21 03:05:34,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-07-21 03:05:34,795 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:34,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:05:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-21 03:05:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2022-07-21 03:05:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 states have internal predecessors, (76), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 03:05:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2022-07-21 03:05:34,807 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 35 [2022-07-21 03:05:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:34,808 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2022-07-21 03:05:34,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:05:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2022-07-21 03:05:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 03:05:34,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:34,809 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:34,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:35,023 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 [2022-07-21 03:05:35,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1410392757, now seen corresponding path program 2 times [2022-07-21 03:05:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:35,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15323594] [2022-07-21 03:05:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:35,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:35,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624239215] [2022-07-21 03:05:35,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 03:05:35,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:35,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:05:35,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 03:05:35,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 03:05:35,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:05:35,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:05:35,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:05:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 03:05:35,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:05:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 03:05:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:05:35,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15323594] [2022-07-21 03:05:35,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:05:35,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624239215] [2022-07-21 03:05:35,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624239215] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:05:35,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:05:35,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-21 03:05:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850590192] [2022-07-21 03:05:35,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:05:35,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 03:05:35,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:05:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 03:05:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:05:35,370 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 03:05:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:05:35,546 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2022-07-21 03:05:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 03:05:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 45 [2022-07-21 03:05:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:05:35,547 INFO L225 Difference]: With dead ends: 104 [2022-07-21 03:05:35,547 INFO L226 Difference]: Without dead ends: 98 [2022-07-21 03:05:35,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-21 03:05:35,548 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:05:35,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:05:35,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-21 03:05:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2022-07-21 03:05:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 70 states have internal predecessors, (82), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 03:05:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2022-07-21 03:05:35,562 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 45 [2022-07-21 03:05:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:05:35,562 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2022-07-21 03:05:35,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 03:05:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2022-07-21 03:05:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 03:05:35,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:05:35,564 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:05:35,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 03:05:35,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:35,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:05:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:05:35,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1900020427, now seen corresponding path program 3 times [2022-07-21 03:05:35,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:05:35,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732312744] [2022-07-21 03:05:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:05:35,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:05:35,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:05:35,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072394183] [2022-07-21 03:05:35,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 03:05:35,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:05:35,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:05:35,791 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:05:35,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 03:05:36,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 03:05:36,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:05:36,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 03:05:36,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:07:09,960 WARN L833 $PredicateComparison]: unable to prove that (or (<= 1 |c___VERIFIER_assert_#in~cond|) (and (<= 0 |c___VERIFIER_assert_#in~cond|) (exists ((|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141| Int) (|aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| Int)) (let ((.cse0 (* 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse11 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2))) (let ((.cse2 (+ .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse5 (+ (* (- 1) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (* (- 1) |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) .cse0)) (.cse6 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse9 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse4 (+ (* 2 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse7 (* (- 1) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|)) (.cse8 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (.cse1 (+ (* |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| 2) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse3 (+ 2 .cse0))) (and (<= .cse0 .cse1) (<= 0 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (< |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| 2) (< .cse2 .cse3) (<= .cse0 .cse4) (<= .cse0 .cse2) (= (mod (+ |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (- 2) .cse5)) 2) 0) (not (= |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 0)) (<= (+ (div (+ .cse6 .cse7 .cse8 .cse9 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) (+ .cse0 1)) (= (mod (+ |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse5) .cse7) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) 0) (< .cse0 (+ (div (+ .cse6 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| .cse7 .cse8 .cse9) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (< .cse4 .cse3) (not (let ((.cse12 (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) (let ((.cse10 (div (+ .cse7 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| .cse8 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2) (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (+ .cse12 .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|))) (= (+ (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse10) 2) .cse11) (+ .cse12 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 2) (* 2 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| .cse10)) .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2)))))) (< .cse1 .cse3))))))) is different from false [2022-07-21 03:08:31,298 WARN L833 $PredicateComparison]: unable to prove that (or (<= 1 c___VERIFIER_assert_~cond) (and (<= 0 c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141| Int) (|aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| Int)) (let ((.cse0 (* 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse11 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2))) (let ((.cse2 (+ .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse5 (+ (* (- 1) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (* (- 1) |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) .cse0)) (.cse6 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse9 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse4 (+ (* 2 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse7 (* (- 1) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|)) (.cse8 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (.cse1 (+ (* |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| 2) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse3 (+ 2 .cse0))) (and (<= .cse0 .cse1) (<= 0 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (< |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| 2) (< .cse2 .cse3) (<= .cse0 .cse4) (<= .cse0 .cse2) (= (mod (+ |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (- 2) .cse5)) 2) 0) (not (= |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 0)) (<= (+ (div (+ .cse6 .cse7 .cse8 .cse9 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) (+ .cse0 1)) (= (mod (+ |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse5) .cse7) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) 0) (< .cse0 (+ (div (+ .cse6 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| .cse7 .cse8 .cse9) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (< .cse4 .cse3) (not (let ((.cse12 (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) (let ((.cse10 (div (+ .cse7 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| .cse8 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2) (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (+ .cse12 .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|))) (= (+ (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse10) 2) .cse11) (+ .cse12 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 2) (* 2 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| .cse10)) .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2)))))) (< .cse1 .cse3))))))) is different from false [2022-07-21 03:09:14,372 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141| Int) (|aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| Int)) (let ((.cse0 (* 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse11 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2))) (let ((.cse2 (+ .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse5 (+ (* (- 1) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (* (- 1) |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) .cse0)) (.cse6 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse9 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse4 (+ (* 2 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse7 (* (- 1) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|)) (.cse8 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (.cse1 (+ (* |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| 2) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse3 (+ 2 .cse0))) (and (<= .cse0 .cse1) (<= 0 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (< |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| 2) (< .cse2 .cse3) (<= .cse0 .cse4) (<= .cse0 .cse2) (= (mod (+ |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (- 2) .cse5)) 2) 0) (not (= |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 0)) (<= (+ (div (+ .cse6 .cse7 .cse8 .cse9 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) (+ .cse0 1)) (= (mod (+ |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse5) .cse7) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) 0) (< .cse0 (+ (div (+ .cse6 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| .cse7 .cse8 .cse9) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (< .cse4 .cse3) (not (let ((.cse12 (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) (let ((.cse10 (div (+ .cse7 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| .cse8 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2) (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (+ .cse12 .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|))) (= (+ (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse10) 2) .cse11) (+ .cse12 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 2) (* 2 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| .cse10)) .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2)))))) (< .cse1 .cse3))))) is different from false [2022-07-21 03:09:16,379 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| Int) (|v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141| Int) (|aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| Int)) (let ((.cse0 (* 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse11 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2))) (let ((.cse2 (+ .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse5 (+ (* (- 1) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (* (- 1) |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) .cse0)) (.cse6 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse9 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse4 (+ (* 2 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse7 (* (- 1) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|)) (.cse8 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (.cse1 (+ (* |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| 2) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|)) (.cse3 (+ 2 .cse0))) (and (<= .cse0 .cse1) (<= 0 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|) (< |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| 2) (< .cse2 .cse3) (<= .cse0 .cse4) (<= .cse0 .cse2) (= (mod (+ |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (- 2) .cse5)) 2) 0) (not (= |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 0)) (<= (+ (div (+ .cse6 .cse7 .cse8 .cse9 |aux_div_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141|) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|) (+ .cse0 1)) (= (mod (+ |aux_div_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse5) .cse7) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) 0) (< .cse0 (+ (div (+ .cse6 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| .cse7 .cse8 .cse9) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|) |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_17|)) (< .cse4 .cse3) (not (let ((.cse12 (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) (let ((.cse10 (div (+ .cse7 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| .cse8 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165| 2) (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| (+ .cse12 .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189|))) |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16|))) (= (+ (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| .cse10) 2) .cse11) (+ .cse12 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| 2) (* 2 (* |v_ULTIMATE.start_main_~Y~0#1_BEFORE_CALL_16| .cse10)) .cse11 |aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~X~0#1_BEFORE_CALL_26_127_141_165_189| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_15| 2)))))) (< .cse1 .cse3))))) is different from true [2022-07-21 03:09:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 1 not checked. [2022-07-21 03:09:16,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:09:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 03:09:24,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:09:24,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732312744] [2022-07-21 03:09:24,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:09:24,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072394183] [2022-07-21 03:09:24,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072394183] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:09:24,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:09:24,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-07-21 03:09:24,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817720419] [2022-07-21 03:09:24,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:09:24,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 03:09:24,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:09:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 03:09:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=221, Unknown=9, NotChecked=96, Total=380 [2022-07-21 03:09:24,152 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 20 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 03:09:26,162 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 03:09:30,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:32,457 WARN L534 Checker$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 03:09:36,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:38,548 WARN L534 Checker$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 03:09:40,574 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 03:09:43,009 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~X~0#1| 1)) (.cse7 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~X~0#1|))) (and (let ((.cse5 (= |c_ULTIMATE.start_main_~Y~0#1| 0)) (.cse4 (= (mod (+ |c_ULTIMATE.start_main_~X~0#1| |c_ULTIMATE.start_main_~v~0#1| (* |c_ULTIMATE.start_main_~y~0#1| (- 2) |c_ULTIMATE.start_main_~X~0#1|)) 2) 0)) (.cse3 (+ (* (- 1) |c_ULTIMATE.start_main_~Y~0#1|) .cse7 (div (+ (* (- 1) |c_ULTIMATE.start_main_~v~0#1|) (* (- 1) |c_ULTIMATE.start_main_~X~0#1|)) (- 2))))) (or (and (let ((.cse2 (= |c_ULTIMATE.start_main_~y~0#1| 0))) (or (let ((.cse0 (div |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (and (= |c_ULTIMATE.start_main_~yx~0#1| (* |c_ULTIMATE.start_main_~Y~0#1| .cse0)) (= (mod |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~y~0#1|) 0) (<= .cse0 .cse1) (not (<= .cse0 |c_ULTIMATE.start_main_~X~0#1|)) (not .cse2))) (and (= |c_ULTIMATE.start_main_~xy~0#1| 0) (= |c_ULTIMATE.start_main_~yx~0#1| 0) .cse2))) (= .cse3 0) .cse4 .cse5) (let ((.cse6 (div .cse3 |c_ULTIMATE.start_main_~Y~0#1|))) (and (<= .cse6 .cse1) (not .cse5) (= |c_ULTIMATE.start_main_~xy~0#1| (* |c_ULTIMATE.start_main_~y~0#1| .cse6)) (= |c_ULTIMATE.start_main_~yx~0#1| (* |c_ULTIMATE.start_main_~Y~0#1| .cse6)) (not (<= .cse6 |c_ULTIMATE.start_main_~X~0#1|)) .cse4 (= (mod .cse3 |c_ULTIMATE.start_main_~Y~0#1|) 0))))) (<= |c_ULTIMATE.start_main_~x~0#1| .cse1) (not (<= |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~X~0#1|)) (= (+ |c_ULTIMATE.start_main_~X~0#1| (* 2 .cse7) |c_ULTIMATE.start_main_~v~0#1|) (+ (* |c_ULTIMATE.start_main_~Y~0#1| 2) (* 2 (* |c_ULTIMATE.start_main_~Y~0#1| |c_ULTIMATE.start_main_~x~0#1|)))))) is different from false [2022-07-21 03:09:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:09:45,345 INFO L93 Difference]: Finished difference Result 93 states and 108 transitions. [2022-07-21 03:09:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 03:09:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-07-21 03:09:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:09:45,347 INFO L225 Difference]: With dead ends: 93 [2022-07-21 03:09:45,347 INFO L226 Difference]: Without dead ends: 87 [2022-07-21 03:09:45,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=117, Invalid=488, Unknown=11, NotChecked=196, Total=812 [2022-07-21 03:09:45,348 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-07-21 03:09:45,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 79 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 200 Invalid, 6 Unknown, 77 Unchecked, 12.4s Time] [2022-07-21 03:09:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-21 03:09:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 50. [2022-07-21 03:09:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 03:09:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-07-21 03:09:45,357 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 45 [2022-07-21 03:09:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:09:45,357 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-07-21 03:09:45,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 03:09:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-07-21 03:09:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-21 03:09:45,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:09:45,359 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:09:45,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 03:09:45,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 03:09:45,559 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:09:45,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:09:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2022-07-21 03:09:45,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:09:45,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310193822] [2022-07-21 03:09:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:09:45,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:09:45,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530525642] [2022-07-21 03:09:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:45,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:45,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:09:45,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:09:45,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 03:09:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:09:45,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 03:09:45,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:09:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:09:45,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:09:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 03:09:45,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:09:45,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310193822] [2022-07-21 03:09:45,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:09:45,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530525642] [2022-07-21 03:09:45,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530525642] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:09:45,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:09:45,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-07-21 03:09:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865279796] [2022-07-21 03:09:45,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:09:45,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 03:09:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:09:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 03:09:45,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:09:45,782 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 03:09:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:09:45,926 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-07-21 03:09:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 03:09:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2022-07-21 03:09:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:09:45,928 INFO L225 Difference]: With dead ends: 116 [2022-07-21 03:09:45,928 INFO L226 Difference]: Without dead ends: 110 [2022-07-21 03:09:45,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-07-21 03:09:45,929 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:09:45,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 131 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:09:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-07-21 03:09:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-07-21 03:09:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-21 03:09:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-07-21 03:09:45,942 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2022-07-21 03:09:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:09:45,942 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-07-21 03:09:45,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 03:09:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-07-21 03:09:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 03:09:45,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:09:45,945 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:09:45,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 03:09:46,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:46,164 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:09:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:09:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2022-07-21 03:09:46,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:09:46,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429693698] [2022-07-21 03:09:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:46,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:09:46,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:09:46,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132228886] [2022-07-21 03:09:46,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 03:09:46,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:46,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:09:46,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:09:46,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 03:09:46,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 03:09:46,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:09:46,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 03:09:46,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:09:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:09:46,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:09:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 03:09:46,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:09:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429693698] [2022-07-21 03:09:46,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:09:46,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132228886] [2022-07-21 03:09:46,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132228886] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:09:46,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:09:46,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-07-21 03:09:46,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801116690] [2022-07-21 03:09:46,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:09:46,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 03:09:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:09:46,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 03:09:46,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2022-07-21 03:09:46,682 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-21 03:09:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:09:47,116 INFO L93 Difference]: Finished difference Result 236 states and 269 transitions. [2022-07-21 03:09:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-21 03:09:47,119 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 109 [2022-07-21 03:09:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:09:47,120 INFO L225 Difference]: With dead ends: 236 [2022-07-21 03:09:47,120 INFO L226 Difference]: Without dead ends: 230 [2022-07-21 03:09:47,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=796, Invalid=1366, Unknown=0, NotChecked=0, Total=2162 [2022-07-21 03:09:47,122 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 214 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:09:47,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 292 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:09:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-21 03:09:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-07-21 03:09:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 184 states have (on average 1.125) internal successors, (207), 184 states have internal predecessors, (207), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 03:09:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 252 transitions. [2022-07-21 03:09:47,151 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 252 transitions. Word has length 109 [2022-07-21 03:09:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:09:47,152 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 252 transitions. [2022-07-21 03:09:47,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-21 03:09:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 252 transitions. [2022-07-21 03:09:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 03:09:47,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:09:47,156 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:09:47,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 03:09:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 03:09:47,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:09:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:09:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1294150550, now seen corresponding path program 3 times [2022-07-21 03:09:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:09:47,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566726292] [2022-07-21 03:09:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:09:47,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:09:47,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097588666] [2022-07-21 03:09:47,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 03:09:47,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:09:47,385 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:09:47,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 03:09:47,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 03:09:47,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:09:47,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 03:09:47,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:09:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 234 proven. 1 refuted. 0 times theorem prover too weak. 2163 trivial. 0 not checked. [2022-07-21 03:09:49,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:09:49,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:09:49,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566726292] [2022-07-21 03:09:49,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:09:49,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097588666] [2022-07-21 03:09:49,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097588666] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 03:09:49,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 03:09:49,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-21 03:09:49,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638752354] [2022-07-21 03:09:49,637 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 03:09:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 03:09:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:09:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 03:09:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=254, Unknown=1, NotChecked=0, Total=306 [2022-07-21 03:09:49,638 INFO L87 Difference]: Start difference. First operand 230 states and 252 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:09:51,645 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 []