./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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/uthash-2.0.2/uthash_BER_test10-3.i -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 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 14:33:11,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 14:33:11,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 14:33:11,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 14:33:11,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 14:33:11,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 14:33:11,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 14:33:11,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 14:33:11,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 14:33:11,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 14:33:11,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 14:33:11,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 14:33:11,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 14:33:11,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 14:33:11,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 14:33:11,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 14:33:11,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 14:33:11,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 14:33:11,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 14:33:11,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 14:33:11,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 14:33:11,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 14:33:11,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 14:33:11,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 14:33:11,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 14:33:11,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 14:33:11,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 14:33:11,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 14:33:11,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 14:33:11,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 14:33:11,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 14:33:11,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 14:33:11,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 14:33:11,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 14:33:11,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 14:33:11,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 14:33:11,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 14:33:11,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 14:33:11,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 14:33:11,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 14:33:11,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 14:33:11,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 14:33:11,658 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 14:33:11,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 14:33:11,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 14:33:11,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 14:33:11,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 14:33:11,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 14:33:11,660 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 14:33:11,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 14:33:11,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 14:33:11,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 14:33:11,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 14:33:11,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 14:33:11,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 14:33:11,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 14:33:11,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 14:33:11,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 14:33:11,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 14:33:11,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 14:33:11,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 14:33:11,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 14:33:11,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 14:33:11,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 14:33:11,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:33:11,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 14:33:11,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 14:33:11,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 14:33:11,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 14:33:11,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 14:33:11,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 14:33:11,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 14:33:11,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 14:33:11,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 14:33:11,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2021-11-04 14:33:11,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 14:33:11,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 14:33:11,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 14:33:11,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 14:33:11,886 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 14:33:11,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-04 14:33:11,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fde69e5/f0d506a156e2484d9e53b73b42b9deef/FLAG0e0c44c91 [2021-11-04 14:33:12,391 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 14:33:12,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2021-11-04 14:33:12,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fde69e5/f0d506a156e2484d9e53b73b42b9deef/FLAG0e0c44c91 [2021-11-04 14:33:12,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fde69e5/f0d506a156e2484d9e53b73b42b9deef [2021-11-04 14:33:12,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 14:33:12,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 14:33:12,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 14:33:12,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 14:33:12,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 14:33:12,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:33:12" (1/1) ... [2021-11-04 14:33:12,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1c6b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:12, skipping insertion in model container [2021-11-04 14:33:12,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:33:12" (1/1) ... [2021-11-04 14:33:12,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 14:33:12,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 14:33:13,067 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-04 14:33:13,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:33:13,250 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 14:33:13,274 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i[33022,33035] [2021-11-04 14:33:13,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:33:13,400 INFO L208 MainTranslator]: Completed translation [2021-11-04 14:33:13,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13 WrapperNode [2021-11-04 14:33:13,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 14:33:13,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 14:33:13,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 14:33:13,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 14:33:13,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 14:33:13,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 14:33:13,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 14:33:13,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 14:33:13,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 14:33:13,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 14:33:13,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 14:33:13,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 14:33:13,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (1/1) ... [2021-11-04 14:33:13,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:33:13,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:13,728 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) [2021-11-04 14:33:13,742 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 [2021-11-04 14:33:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 14:33:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 14:33:13,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 14:33:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 14:33:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 14:33:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 14:33:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 14:33:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 14:33:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 14:33:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 14:33:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 14:33:14,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 14:33:14,547 INFO L299 CfgBuilder]: Removed 224 assume(true) statements. [2021-11-04 14:33:14,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:33:14 BoogieIcfgContainer [2021-11-04 14:33:14,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 14:33:14,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 14:33:14,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 14:33:14,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 14:33:14,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 02:33:12" (1/3) ... [2021-11-04 14:33:14,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ac10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:33:14, skipping insertion in model container [2021-11-04 14:33:14,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:33:13" (2/3) ... [2021-11-04 14:33:14,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ac10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:33:14, skipping insertion in model container [2021-11-04 14:33:14,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:33:14" (3/3) ... [2021-11-04 14:33:14,558 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2021-11-04 14:33:14,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 14:33:14,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-04 14:33:14,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 14:33:14,595 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 14:33:14,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-04 14:33:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 14:33:14,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:14,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:14,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-04 14:33:14,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:14,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753486768] [2021-11-04 14:33:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:14,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:33:14,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:14,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753486768] [2021-11-04 14:33:14,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753486768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:14,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:14,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 14:33:14,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870099331] [2021-11-04 14:33:14,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:14,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 14:33:14,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 14:33:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:33:14,801 INFO L87 Difference]: Start difference. First operand has 520 states, 503 states have (on average 1.7435387673956262) internal successors, (877), 519 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:15,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:15,538 INFO L93 Difference]: Finished difference Result 1038 states and 1752 transitions. [2021-11-04 14:33:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 14:33:15,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-04 14:33:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:15,548 INFO L225 Difference]: With dead ends: 1038 [2021-11-04 14:33:15,549 INFO L226 Difference]: Without dead ends: 465 [2021-11-04 14:33:15,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:33:15,554 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 539.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 670.08ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:15,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 686 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [0 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 670.08ms Time] [2021-11-04 14:33:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-04 14:33:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-04 14:33:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-04 14:33:15,612 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-04 14:33:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:15,612 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-04 14:33:15,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-04 14:33:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 14:33:15,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:15,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:15,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 14:33:15,615 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-04 14:33:15,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:15,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152993566] [2021-11-04 14:33:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:15,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:33:15,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:15,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152993566] [2021-11-04 14:33:15,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152993566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:15,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:15,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:33:15,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265305894] [2021-11-04 14:33:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:15,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:33:15,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:33:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:33:15,711 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:17,021 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-04 14:33:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:33:17,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 14:33:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:17,024 INFO L225 Difference]: With dead ends: 831 [2021-11-04 14:33:17,024 INFO L226 Difference]: Without dead ends: 540 [2021-11-04 14:33:17,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:17,026 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1096.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1265.10ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:17,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 1825 Unknown, 0 Unchecked, 5.99ms Time], IncrementalHoareTripleChecker [2 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1265.10ms Time] [2021-11-04 14:33:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-04 14:33:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-04 14:33:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.352549889135255) internal successors, (610), 466 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-04 14:33:17,053 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-04 14:33:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:17,053 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-04 14:33:17,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-04 14:33:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 14:33:17,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:17,056 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:17,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 14:33:17,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:17,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:17,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-04 14:33:17,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:17,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834763541] [2021-11-04 14:33:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:17,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:17,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:17,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377017044] [2021-11-04 14:33:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:17,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:17,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:17,090 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) [2021-11-04 14:33:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 14:33:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:17,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:33:17,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:33:17,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:17,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:17,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834763541] [2021-11-04 14:33:17,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:17,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377017044] [2021-11-04 14:33:17,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377017044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:17,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:17,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:33:17,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43319929] [2021-11-04 14:33:17,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:17,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:33:17,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:33:17,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:17,491 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:18,209 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-04 14:33:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:33:18,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 14:33:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:18,211 INFO L225 Difference]: With dead ends: 951 [2021-11-04 14:33:18,211 INFO L226 Difference]: Without dead ends: 488 [2021-11-04 14:33:18,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:18,213 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 599.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 694.61ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:18,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 694.61ms Time] [2021-11-04 14:33:18,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-04 14:33:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-04 14:33:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 471 states have (on average 1.3375796178343948) internal successors, (630), 486 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-04 14:33:18,235 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-04 14:33:18,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:18,236 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-04 14:33:18,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-04 14:33:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 14:33:18,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:18,239 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:18,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:18,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:18,457 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-04 14:33:18,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:18,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864069576] [2021-11-04 14:33:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:18,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:18,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:18,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738162968] [2021-11-04 14:33:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:18,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:18,504 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) [2021-11-04 14:33:18,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 14:33:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:18,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:33:18,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 14:33:18,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:18,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:18,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864069576] [2021-11-04 14:33:18,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:18,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738162968] [2021-11-04 14:33:18,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738162968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:18,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:18,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:33:18,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666866091] [2021-11-04 14:33:18,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:18,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:33:18,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:18,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:33:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:18,853 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:19,732 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-04 14:33:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:33:19,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 14:33:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:19,734 INFO L225 Difference]: With dead ends: 787 [2021-11-04 14:33:19,734 INFO L226 Difference]: Without dead ends: 508 [2021-11-04 14:33:19,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:19,736 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 707.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 854.95ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:19,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 854.95ms Time] [2021-11-04 14:33:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-04 14:33:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-04 14:33:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 506 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-04 14:33:19,743 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-04 14:33:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:19,744 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-04 14:33:19,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-04 14:33:19,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 14:33:19,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:19,745 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:19,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:19,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-04 14:33:19,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-04 14:33:19,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:19,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236013540] [2021-11-04 14:33:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:19,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:19,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:19,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899521616] [2021-11-04 14:33:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:19,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:19,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:19,969 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) [2021-11-04 14:33:19,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 14:33:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:20,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:33:20,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:33:20,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:20,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:20,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236013540] [2021-11-04 14:33:20,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:20,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899521616] [2021-11-04 14:33:20,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899521616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:20,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:20,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:33:20,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459240091] [2021-11-04 14:33:20,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:20,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:33:20,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:33:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:33:20,315 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:21,435 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-04 14:33:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:33:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 14:33:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:21,438 INFO L225 Difference]: With dead ends: 1086 [2021-11-04 14:33:21,438 INFO L226 Difference]: Without dead ends: 583 [2021-11-04 14:33:21,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:21,440 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 596 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 887.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1077.11ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:21,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 0 Invalid, 1574 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [24 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1077.11ms Time] [2021-11-04 14:33:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-04 14:33:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-04 14:33:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 477 states have (on average 1.3186582809224319) internal successors, (629), 492 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-04 14:33:21,449 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-04 14:33:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:21,449 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-04 14:33:21,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-04 14:33:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 14:33:21,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:21,451 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:21,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-04 14:33:21,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:21,669 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-04 14:33:21,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:21,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700146378] [2021-11-04 14:33:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:21,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:21,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:21,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588359332] [2021-11-04 14:33:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:21,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:21,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:21,692 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) [2021-11-04 14:33:21,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 14:33:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:21,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:33:21,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 14:33:22,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:22,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:22,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700146378] [2021-11-04 14:33:22,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:22,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588359332] [2021-11-04 14:33:22,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588359332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:22,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:22,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:33:22,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308344812] [2021-11-04 14:33:22,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:22,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:33:22,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:22,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:33:22,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:33:22,024 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:23,119 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-04 14:33:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:33:23,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 14:33:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:23,122 INFO L225 Difference]: With dead ends: 761 [2021-11-04 14:33:23,122 INFO L226 Difference]: Without dead ends: 480 [2021-11-04 14:33:23,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:23,123 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 908.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1068.86ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:23,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1428 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [24 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1068.86ms Time] [2021-11-04 14:33:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-04 14:33:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-04 14:33:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 478 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-04 14:33:23,152 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-04 14:33:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:23,153 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-04 14:33:23,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-04 14:33:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 14:33:23,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:23,155 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:23,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:23,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:23,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:23,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:23,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-04 14:33:23,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:23,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792025808] [2021-11-04 14:33:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:23,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:23,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:23,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248886089] [2021-11-04 14:33:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:23,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:23,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:23,387 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) [2021-11-04 14:33:23,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 14:33:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:23,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:33:23,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:33:23,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:23,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:23,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792025808] [2021-11-04 14:33:23,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:23,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248886089] [2021-11-04 14:33:23,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248886089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:23,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:23,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:33:23,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516984056] [2021-11-04 14:33:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:33:23,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:23,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:33:23,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:23,841 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:24,831 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-04 14:33:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:33:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 14:33:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:24,837 INFO L225 Difference]: With dead ends: 1231 [2021-11-04 14:33:24,837 INFO L226 Difference]: Without dead ends: 756 [2021-11-04 14:33:24,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:24,838 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 783.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 946.46ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:24,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 1178 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [4 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 946.46ms Time] [2021-11-04 14:33:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-04 14:33:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-04 14:33:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 720 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-04 14:33:24,869 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-04 14:33:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:24,871 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-04 14:33:24,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-04 14:33:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-04 14:33:24,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:24,873 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:24,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-04 14:33:25,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:25,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:25,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-04 14:33:25,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:25,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119298333] [2021-11-04 14:33:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:25,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:25,118 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:25,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530824583] [2021-11-04 14:33:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:25,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:25,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:25,121 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) [2021-11-04 14:33:25,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 14:33:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:25,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:33:25,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:33:25,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:25,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:25,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119298333] [2021-11-04 14:33:25,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:25,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530824583] [2021-11-04 14:33:25,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530824583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:25,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:25,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:33:25,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817183136] [2021-11-04 14:33:25,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:25,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:33:25,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:33:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:25,467 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:26,646 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2021-11-04 14:33:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:33:26,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-04 14:33:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:26,649 INFO L225 Difference]: With dead ends: 1400 [2021-11-04 14:33:26,649 INFO L226 Difference]: Without dead ends: 727 [2021-11-04 14:33:26,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:26,650 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1008.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1155.58ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:26,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1190 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [6 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1155.58ms Time] [2021-11-04 14:33:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-04 14:33:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-04 14:33:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.3164556962025316) internal successors, (936), 726 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2021-11-04 14:33:26,664 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2021-11-04 14:33:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:26,665 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2021-11-04 14:33:26,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2021-11-04 14:33:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 14:33:26,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:26,667 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:26,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-04 14:33:26,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:26,885 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:26,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:26,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2021-11-04 14:33:26,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:26,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372696016] [2021-11-04 14:33:26,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:26,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:26,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:26,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366727959] [2021-11-04 14:33:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:26,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:26,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:26,911 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) [2021-11-04 14:33:26,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 14:33:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:27,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 14:33:27,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:33:27,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:33:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:33:27,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:27,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372696016] [2021-11-04 14:33:27,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:27,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366727959] [2021-11-04 14:33:27,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366727959] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:33:27,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:33:27,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 14:33:27,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109992354] [2021-11-04 14:33:27,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:33:27,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 14:33:27,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:27,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 14:33:27,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:33:27,384 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:28,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:28,474 INFO L93 Difference]: Finished difference Result 1423 states and 1844 transitions. [2021-11-04 14:33:28,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 14:33:28,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 14:33:28,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:28,477 INFO L225 Difference]: With dead ends: 1423 [2021-11-04 14:33:28,477 INFO L226 Difference]: Without dead ends: 745 [2021-11-04 14:33:28,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.49ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:33:28,478 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 835.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1062.57ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:28,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1813 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [31 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1062.57ms Time] [2021-11-04 14:33:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-04 14:33:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-11-04 14:33:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 729 states have (on average 1.308641975308642) internal successors, (954), 744 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 954 transitions. [2021-11-04 14:33:28,491 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 954 transitions. Word has length 106 [2021-11-04 14:33:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:28,491 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 954 transitions. [2021-11-04 14:33:28,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 954 transitions. [2021-11-04 14:33:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-04 14:33:28,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:28,492 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:28,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:28,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:28,711 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash -899210817, now seen corresponding path program 2 times [2021-11-04 14:33:28,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:28,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468947662] [2021-11-04 14:33:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:28,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:28,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:28,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574965707] [2021-11-04 14:33:28,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:33:28,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:28,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:28,726 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) [2021-11-04 14:33:28,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 14:33:28,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:33:28,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:33:28,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 14:33:28,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 14:33:29,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:33:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 14:33:29,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:29,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468947662] [2021-11-04 14:33:29,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:29,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574965707] [2021-11-04 14:33:29,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574965707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:33:29,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:33:29,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 14:33:29,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609812460] [2021-11-04 14:33:29,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:33:29,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 14:33:29,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 14:33:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:33:29,185 INFO L87 Difference]: Start difference. First operand 745 states and 954 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:30,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:30,985 INFO L93 Difference]: Finished difference Result 1474 states and 1913 transitions. [2021-11-04 14:33:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 14:33:30,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-04 14:33:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:30,987 INFO L225 Difference]: With dead ends: 1474 [2021-11-04 14:33:30,987 INFO L226 Difference]: Without dead ends: 781 [2021-11-04 14:33:30,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.82ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:33:30,989 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1481.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1762.25ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:30,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3059 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [81 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1762.25ms Time] [2021-11-04 14:33:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-04 14:33:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-04 14:33:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.2941176470588236) internal successors, (990), 780 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 990 transitions. [2021-11-04 14:33:31,001 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 990 transitions. Word has length 112 [2021-11-04 14:33:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:31,001 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 990 transitions. [2021-11-04 14:33:31,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 990 transitions. [2021-11-04 14:33:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 14:33:31,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:31,003 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:31,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-04 14:33:31,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 14:33:31,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 758407135, now seen corresponding path program 3 times [2021-11-04 14:33:31,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:31,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262546919] [2021-11-04 14:33:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:31,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:31,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:31,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702364418] [2021-11-04 14:33:31,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:33:31,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:31,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:31,243 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) [2021-11-04 14:33:31,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 14:33:31,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:33:31,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:33:31,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 14:33:31,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:31,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-04 14:33:31,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-04 14:33:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 14:33:31,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:31,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:31,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262546919] [2021-11-04 14:33:31,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:31,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702364418] [2021-11-04 14:33:31,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702364418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:31,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:31,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 14:33:31,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979608965] [2021-11-04 14:33:31,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:31,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 14:33:31,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 14:33:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:31,670 INFO L87 Difference]: Start difference. First operand 781 states and 990 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:33,275 INFO L93 Difference]: Finished difference Result 1452 states and 1842 transitions. [2021-11-04 14:33:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 14:33:33,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-04 14:33:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:33,278 INFO L225 Difference]: With dead ends: 1452 [2021-11-04 14:33:33,278 INFO L226 Difference]: Without dead ends: 781 [2021-11-04 14:33:33,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 14:33:33,279 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1264.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.58ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1536.07ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:33,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 2387 Unknown, 0 Unchecked, 4.58ms Time], IncrementalHoareTripleChecker [12 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1536.07ms Time] [2021-11-04 14:33:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-04 14:33:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-04 14:33:33,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.29281045751634) internal successors, (989), 780 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-04 14:33:33,303 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 124 [2021-11-04 14:33:33,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:33,303 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-04 14:33:33,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:33,303 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-04 14:33:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 14:33:33,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:33,304 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:33,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:33,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:33,523 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1889355962, now seen corresponding path program 1 times [2021-11-04 14:33:33,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:33,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25854152] [2021-11-04 14:33:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:33,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:33,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:33,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769045279] [2021-11-04 14:33:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:33,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:33,549 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) [2021-11-04 14:33:33,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 14:33:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:33,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:33:33,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 14:33:33,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:33,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:33,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25854152] [2021-11-04 14:33:33,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:33,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769045279] [2021-11-04 14:33:33,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769045279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:33,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:33,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:33:33,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60558370] [2021-11-04 14:33:33,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:33,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:33:33,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:33:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:33,962 INFO L87 Difference]: Start difference. First operand 781 states and 989 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:34,756 INFO L93 Difference]: Finished difference Result 1586 states and 2019 transitions. [2021-11-04 14:33:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:33:34,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-04 14:33:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:34,759 INFO L225 Difference]: With dead ends: 1586 [2021-11-04 14:33:34,759 INFO L226 Difference]: Without dead ends: 823 [2021-11-04 14:33:34,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:34,761 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 628.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 769.99ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:34,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1205 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [28 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 769.99ms Time] [2021-11-04 14:33:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-04 14:33:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2021-11-04 14:33:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 805 states have (on average 1.2782608695652173) internal successors, (1029), 820 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1029 transitions. [2021-11-04 14:33:34,797 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1029 transitions. Word has length 171 [2021-11-04 14:33:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:34,797 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1029 transitions. [2021-11-04 14:33:34,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1029 transitions. [2021-11-04 14:33:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 14:33:34,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:34,799 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:34,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:35,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-04 14:33:35,014 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:35,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash 508631876, now seen corresponding path program 1 times [2021-11-04 14:33:35,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:35,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007749124] [2021-11-04 14:33:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:35,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:35,034 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:35,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46654834] [2021-11-04 14:33:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:35,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:35,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:35,037 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) [2021-11-04 14:33:35,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 14:33:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:35,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:33:35,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 14:33:35,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:35,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:35,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007749124] [2021-11-04 14:33:35,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:35,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46654834] [2021-11-04 14:33:35,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46654834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:35,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:35,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:33:35,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11660006] [2021-11-04 14:33:35,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:35,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:33:35,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:35,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:33:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:33:35,517 INFO L87 Difference]: Start difference. First operand 821 states and 1029 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:36,350 INFO L93 Difference]: Finished difference Result 1580 states and 1984 transitions. [2021-11-04 14:33:36,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:33:36,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-04 14:33:36,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:36,352 INFO L225 Difference]: With dead ends: 1580 [2021-11-04 14:33:36,352 INFO L226 Difference]: Without dead ends: 795 [2021-11-04 14:33:36,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:36,354 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 582 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 672.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 805.60ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:36,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 0 Invalid, 1212 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [25 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 805.60ms Time] [2021-11-04 14:33:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-04 14:33:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2021-11-04 14:33:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.2702702702702702) internal successors, (987), 792 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 987 transitions. [2021-11-04 14:33:36,366 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 987 transitions. Word has length 171 [2021-11-04 14:33:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:36,367 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 987 transitions. [2021-11-04 14:33:36,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 987 transitions. [2021-11-04 14:33:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 14:33:36,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:36,368 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:36,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:36,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 14:33:36,584 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash -288240300, now seen corresponding path program 1 times [2021-11-04 14:33:36,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:36,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126745471] [2021-11-04 14:33:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:36,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:36,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:36,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205419796] [2021-11-04 14:33:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:36,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:36,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:36,598 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:33:36,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-04 14:33:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:36,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 14:33:36,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 14:33:37,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:37,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:37,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126745471] [2021-11-04 14:33:37,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:37,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205419796] [2021-11-04 14:33:37,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205419796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:37,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:37,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 14:33:37,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459628274] [2021-11-04 14:33:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:37,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 14:33:37,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:37,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 14:33:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:37,113 INFO L87 Difference]: Start difference. First operand 793 states and 987 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:38,638 INFO L93 Difference]: Finished difference Result 2335 states and 2912 transitions. [2021-11-04 14:33:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 14:33:38,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-04 14:33:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:38,644 INFO L225 Difference]: With dead ends: 2335 [2021-11-04 14:33:38,644 INFO L226 Difference]: Without dead ends: 1580 [2021-11-04 14:33:38,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:38,653 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 568 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1230.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1466.05ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:38,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 0 Invalid, 2393 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [24 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1466.05ms Time] [2021-11-04 14:33:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-11-04 14:33:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 839. [2021-11-04 14:33:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 823 states have (on average 1.2600243013365735) internal successors, (1037), 838 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1037 transitions. [2021-11-04 14:33:38,672 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1037 transitions. Word has length 171 [2021-11-04 14:33:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:38,672 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1037 transitions. [2021-11-04 14:33:38,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1037 transitions. [2021-11-04 14:33:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 14:33:38,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:38,674 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:38,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:38,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-04 14:33:38,888 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1805536166, now seen corresponding path program 1 times [2021-11-04 14:33:38,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:38,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115037058] [2021-11-04 14:33:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:38,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:38,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:38,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447526455] [2021-11-04 14:33:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:38,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:38,904 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:33:38,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-04 14:33:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:39,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 14:33:39,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 14:33:39,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:39,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:39,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115037058] [2021-11-04 14:33:39,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:39,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447526455] [2021-11-04 14:33:39,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447526455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:39,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:39,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:33:39,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933731624] [2021-11-04 14:33:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:39,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:33:39,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:33:39,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:33:39,343 INFO L87 Difference]: Start difference. First operand 839 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:40,242 INFO L93 Difference]: Finished difference Result 1587 states and 1971 transitions. [2021-11-04 14:33:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:33:40,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-04 14:33:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:40,245 INFO L225 Difference]: With dead ends: 1587 [2021-11-04 14:33:40,245 INFO L226 Difference]: Without dead ends: 775 [2021-11-04 14:33:40,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:33:40,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 562 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 724.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 869.05ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:40,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [7 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 869.05ms Time] [2021-11-04 14:33:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-04 14:33:40,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2021-11-04 14:33:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 759 states have (on average 1.2635046113306982) internal successors, (959), 774 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 959 transitions. [2021-11-04 14:33:40,261 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 959 transitions. Word has length 171 [2021-11-04 14:33:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:40,262 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 959 transitions. [2021-11-04 14:33:40,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 959 transitions. [2021-11-04 14:33:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 14:33:40,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:40,263 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:40,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:40,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-04 14:33:40,482 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2109747538, now seen corresponding path program 1 times [2021-11-04 14:33:40,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:40,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267045733] [2021-11-04 14:33:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:40,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:40,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:40,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490060252] [2021-11-04 14:33:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:40,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:40,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:40,515 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:33:40,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-04 14:33:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:40,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 14:33:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 14:33:41,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:33:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 14:33:41,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:41,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267045733] [2021-11-04 14:33:41,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:41,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490060252] [2021-11-04 14:33:41,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490060252] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:33:41,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:33:41,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 14:33:41,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545563794] [2021-11-04 14:33:41,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:33:41,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 14:33:41,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:41,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 14:33:41,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:33:41,469 INFO L87 Difference]: Start difference. First operand 775 states and 959 transitions. Second operand has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:42,934 INFO L93 Difference]: Finished difference Result 1567 states and 2005 transitions. [2021-11-04 14:33:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 14:33:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-04 14:33:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:42,937 INFO L225 Difference]: With dead ends: 1567 [2021-11-04 14:33:42,937 INFO L226 Difference]: Without dead ends: 847 [2021-11-04 14:33:42,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 252.36ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:33:42,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1161.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1410.38ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:42,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2615 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [235 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1410.38ms Time] [2021-11-04 14:33:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-04 14:33:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-11-04 14:33:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 831 states have (on average 1.2406738868832732) internal successors, (1031), 846 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1031 transitions. [2021-11-04 14:33:42,977 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1031 transitions. Word has length 171 [2021-11-04 14:33:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:42,977 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1031 transitions. [2021-11-04 14:33:42,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1031 transitions. [2021-11-04 14:33:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-04 14:33:42,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:42,979 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:43,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:43,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:43,196 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash 416222354, now seen corresponding path program 2 times [2021-11-04 14:33:43,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:43,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218434840] [2021-11-04 14:33:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:43,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:43,209 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:43,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469710825] [2021-11-04 14:33:43,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:33:43,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:43,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:43,212 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:33:43,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-04 14:33:43,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:33:43,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:33:43,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 14:33:43,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 14:33:44,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:33:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 14:33:44,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:44,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218434840] [2021-11-04 14:33:44,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:44,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469710825] [2021-11-04 14:33:44,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469710825] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:33:44,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:33:44,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 14:33:44,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062965061] [2021-11-04 14:33:44,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:33:44,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 14:33:44,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 14:33:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:33:44,870 INFO L87 Difference]: Start difference. First operand 847 states and 1031 transitions. Second operand has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:48,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:48,884 INFO L93 Difference]: Finished difference Result 1759 states and 2257 transitions. [2021-11-04 14:33:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 14:33:48,884 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-04 14:33:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:48,887 INFO L225 Difference]: With dead ends: 1759 [2021-11-04 14:33:48,887 INFO L226 Difference]: Without dead ends: 979 [2021-11-04 14:33:48,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 901.99ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:33:48,888 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 4488 mSDsCounter, 0 mSdLazyCounter, 5327 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3301.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.63ms SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 5327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3896.60ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:48,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5759 Unknown, 0 Unchecked, 7.63ms Time], IncrementalHoareTripleChecker [432 Valid, 5327 Invalid, 0 Unknown, 0 Unchecked, 3896.60ms Time] [2021-11-04 14:33:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-04 14:33:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 979. [2021-11-04 14:33:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 963 states have (on average 1.2076843198338525) internal successors, (1163), 978 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1163 transitions. [2021-11-04 14:33:48,908 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1163 transitions. Word has length 195 [2021-11-04 14:33:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:48,908 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1163 transitions. [2021-11-04 14:33:48,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1163 transitions. [2021-11-04 14:33:48,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-04 14:33:48,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:48,910 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:48,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-04 14:33:49,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-04 14:33:49,124 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1136112334, now seen corresponding path program 3 times [2021-11-04 14:33:49,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:49,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627593426] [2021-11-04 14:33:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:49,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:49,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:49,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928615988] [2021-11-04 14:33:49,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:33:49,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:49,140 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:33:49,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-04 14:33:49,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:33:49,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:33:49,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:33:49,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-11-04 14:33:49,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:33:49,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:49,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627593426] [2021-11-04 14:33:49,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:49,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928615988] [2021-11-04 14:33:49,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928615988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:33:49,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:33:49,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:33:49,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474163399] [2021-11-04 14:33:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:33:49,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:33:49,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:33:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:49,579 INFO L87 Difference]: Start difference. First operand 979 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:33:50,617 INFO L93 Difference]: Finished difference Result 2139 states and 2607 transitions. [2021-11-04 14:33:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:33:50,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2021-11-04 14:33:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:33:50,620 INFO L225 Difference]: With dead ends: 2139 [2021-11-04 14:33:50,620 INFO L226 Difference]: Without dead ends: 1297 [2021-11-04 14:33:50,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:33:50,622 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 804.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 984.77ms IncrementalHoareTripleChecker+Time [2021-11-04 14:33:50,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1148 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [4 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 984.77ms Time] [2021-11-04 14:33:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-04 14:33:50,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1140. [2021-11-04 14:33:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1124 states have (on average 1.2366548042704626) internal successors, (1390), 1139 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1390 transitions. [2021-11-04 14:33:50,645 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1390 transitions. Word has length 239 [2021-11-04 14:33:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:33:50,645 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1390 transitions. [2021-11-04 14:33:50,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:33:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1390 transitions. [2021-11-04 14:33:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-04 14:33:50,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:33:50,648 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:33:50,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-04 14:33:50,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-04 14:33:50,866 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:33:50,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:33:50,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1114316862, now seen corresponding path program 1 times [2021-11-04 14:33:50,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:33:50,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773238933] [2021-11-04 14:33:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:50,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:33:50,890 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:33:50,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208116479] [2021-11-04 14:33:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:33:50,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:33:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:33:50,908 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:33:50,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-04 14:33:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:33:51,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-04 14:33:51,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:33:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-04 14:33:52,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:33:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-04 14:33:56,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:33:56,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773238933] [2021-11-04 14:33:56,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:33:56,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208116479] [2021-11-04 14:33:56,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208116479] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:33:56,740 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:33:56,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-04 14:33:56,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947979773] [2021-11-04 14:33:56,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:33:56,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-04 14:33:56,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:33:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-04 14:33:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-04 14:33:56,745 INFO L87 Difference]: Start difference. First operand 1140 states and 1390 transitions. Second operand has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:01,867 INFO L93 Difference]: Finished difference Result 2284 states and 2920 transitions. [2021-11-04 14:34:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-04 14:34:01,868 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2021-11-04 14:34:01,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:01,871 INFO L225 Difference]: With dead ends: 2284 [2021-11-04 14:34:01,871 INFO L226 Difference]: Without dead ends: 1278 [2021-11-04 14:34:01,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4552.35ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-04 14:34:01,874 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3927 mSDsCounter, 0 mSdLazyCounter, 4866 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3881.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.45ms SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 4866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4692.50ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:01,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5514 Unknown, 0 Unchecked, 10.45ms Time], IncrementalHoareTripleChecker [648 Valid, 4866 Invalid, 0 Unknown, 0 Unchecked, 4692.50ms Time] [2021-11-04 14:34:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-04 14:34:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1278. [2021-11-04 14:34:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1262 states have (on average 1.2107765451664025) internal successors, (1528), 1277 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1528 transitions. [2021-11-04 14:34:01,920 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1528 transitions. Word has length 334 [2021-11-04 14:34:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:01,920 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1528 transitions. [2021-11-04 14:34:01,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1528 transitions. [2021-11-04 14:34:01,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-04 14:34:01,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:01,923 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:01,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:02,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:02,146 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:34:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1833055330, now seen corresponding path program 2 times [2021-11-04 14:34:02,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:02,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071135899] [2021-11-04 14:34:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:02,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:02,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:02,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048912236] [2021-11-04 14:34:02,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:34:02,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:02,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:02,176 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:34:02,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-04 14:34:02,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:34:02,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:34:02,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-04 14:34:02,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-04 14:34:05,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:34:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-04 14:34:41,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:41,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071135899] [2021-11-04 14:34:41,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:41,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048912236] [2021-11-04 14:34:41,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048912236] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:34:41,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:34:41,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 184 [2021-11-04 14:34:41,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079807348] [2021-11-04 14:34:41,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:34:41,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-04 14:34:41,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-04 14:34:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-04 14:34:41,726 INFO L87 Difference]: Start difference. First operand 1278 states and 1528 transitions. Second operand has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:49,945 INFO L93 Difference]: Finished difference Result 2652 states and 3426 transitions. [2021-11-04 14:34:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2021-11-04 14:34:49,947 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2021-11-04 14:34:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:49,950 INFO L225 Difference]: With dead ends: 2652 [2021-11-04 14:34:49,951 INFO L226 Difference]: Without dead ends: 1554 [2021-11-04 14:34:49,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37276.29ms TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-04 14:34:49,955 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 1413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4048.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.74ms SdHoareTripleChecker+Time, 1413 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5550.78ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:49,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4748 Unknown, 0 Unchecked, 13.74ms Time], IncrementalHoareTripleChecker [1413 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 5550.78ms Time] [2021-11-04 14:34:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-04 14:34:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2021-11-04 14:34:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1538 states have (on average 1.1729518855656698) internal successors, (1804), 1553 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1804 transitions. [2021-11-04 14:34:50,020 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1804 transitions. Word has length 426 [2021-11-04 14:34:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:50,021 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 1804 transitions. [2021-11-04 14:34:50,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1804 transitions. [2021-11-04 14:34:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-04 14:34:50,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:50,025 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:50,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-04 14:34:50,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:50,247 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:34:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2138539426, now seen corresponding path program 3 times [2021-11-04 14:34:50,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:50,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707701649] [2021-11-04 14:34:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:50,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:50,276 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:50,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495222340] [2021-11-04 14:34:50,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:34:50,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:50,282 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:34:50,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-04 14:34:50,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:34:50,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:34:50,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:34:50,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35286 trivial. 0 not checked. [2021-11-04 14:34:51,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:51,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:51,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707701649] [2021-11-04 14:34:51,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:51,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495222340] [2021-11-04 14:34:51,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495222340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:51,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:51,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:34:51,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077850420] [2021-11-04 14:34:51,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:51,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:34:51,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:34:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:34:51,582 INFO L87 Difference]: Start difference. First operand 1554 states and 1804 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:52,526 INFO L93 Difference]: Finished difference Result 2357 states and 2769 transitions. [2021-11-04 14:34:52,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:34:52,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 610 [2021-11-04 14:34:52,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:52,529 INFO L225 Difference]: With dead ends: 2357 [2021-11-04 14:34:52,529 INFO L226 Difference]: Without dead ends: 1156 [2021-11-04 14:34:52,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:34:52,531 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 987 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 729.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 895.39ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:52,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 0 Invalid, 669 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 895.39ms Time] [2021-11-04 14:34:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-04 14:34:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1156. [2021-11-04 14:34:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1140 states have (on average 1.169298245614035) internal successors, (1333), 1155 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1333 transitions. [2021-11-04 14:34:52,579 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1333 transitions. Word has length 610 [2021-11-04 14:34:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:52,580 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1333 transitions. [2021-11-04 14:34:52,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:34:52,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1333 transitions. [2021-11-04 14:34:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-04 14:34:52,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:52,585 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:52,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:52,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:52,792 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 14:34:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:52,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1511974763, now seen corresponding path program 1 times [2021-11-04 14:34:52,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:52,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836088838] [2021-11-04 14:34:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:52,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:52,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:52,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510639805] [2021-11-04 14:34:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:52,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:52,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:52,840 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:34:52,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-04 14:34:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:53,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 185 conjunts are in the unsatisfiable core [2021-11-04 14:34:53,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:35:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 16653 refuted. 0 times theorem prover too weak. 18633 trivial. 0 not checked. [2021-11-04 14:35:02,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15