./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/product-lines/email_spec27_product13.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:04:39,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:04:39,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:04:39,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:04:39,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:04:39,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:04:39,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:04:39,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:04:39,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:04:39,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:04:39,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:04:39,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:04:39,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:04:39,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:04:39,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:04:39,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:04:39,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:04:39,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:04:39,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:04:39,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:04:39,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:04:39,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:04:39,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:04:39,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:04:39,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:04:39,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:04:39,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:04:39,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:04:39,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:04:39,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:04:39,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:04:39,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:04:39,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:04:39,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:04:39,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:04:39,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:04:39,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:04:39,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:04:39,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:04:39,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:04:39,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:04:39,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:04:39,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:04:39,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:04:39,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:04:39,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:04:39,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:04:39,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:04:39,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:04:39,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:04:39,679 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:04:39,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:04:39,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:04:39,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:04:39,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:04:39,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:04:39,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:04:39,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:04:39,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:04:39,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:04:39,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:04:39,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:04:39,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:04:39,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:04:39,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:04:39,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:04:39,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:04:39,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:04:39,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:04:39,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:04:39,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:04:39,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:04:39,684 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:04:39,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:04:39,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:04:39,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:04:39,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 [2021-12-21 13:04:39,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:04:39,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:04:39,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:04:39,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:04:39,898 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:04:39,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2021-12-21 13:04:39,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c890e20/2764d8c8b77142eba5089bce5f4ab8b0/FLAG6fd82c0d8 [2021-12-21 13:04:40,361 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:04:40,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2021-12-21 13:04:40,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c890e20/2764d8c8b77142eba5089bce5f4ab8b0/FLAG6fd82c0d8 [2021-12-21 13:04:40,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c890e20/2764d8c8b77142eba5089bce5f4ab8b0 [2021-12-21 13:04:40,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:04:40,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:04:40,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:04:40,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:04:40,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:04:40,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af4dae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40, skipping insertion in model container [2021-12-21 13:04:40,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:04:40,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:04:40,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2021-12-21 13:04:40,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:04:40,691 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:04:40,782 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2021-12-21 13:04:40,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:04:40,827 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:04:40,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40 WrapperNode [2021-12-21 13:04:40,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:04:40,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:04:40,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:04:40,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:04:40,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,906 INFO L137 Inliner]: procedures = 124, calls = 190, calls flagged for inlining = 52, calls inlined = 44, statements flattened = 819 [2021-12-21 13:04:40,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:04:40,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:04:40,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:04:40,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:04:40,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:04:40,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:04:40,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:04:40,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:04:40,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (1/1) ... [2021-12-21 13:04:40,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:04:40,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:04:41,018 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) [2021-12-21 13:04:41,024 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 [2021-12-21 13:04:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:04:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:04:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:04:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:04:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-21 13:04:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-21 13:04:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:04:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:04:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-21 13:04:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-21 13:04:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:04:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:04:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:04:41,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-21 13:04:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-21 13:04:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:04:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:04:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:04:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-21 13:04:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-21 13:04:41,049 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:04:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:04:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:04:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:04:41,050 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:04:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:04:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-21 13:04:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-21 13:04:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-21 13:04:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-21 13:04:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:04:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:04:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:04:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:04:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:04:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:04:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:04:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:04:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:04:41,198 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:04:41,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:04:41,714 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:04:41,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:04:41,726 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:04:41,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:04:41 BoogieIcfgContainer [2021-12-21 13:04:41,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:04:41,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:04:41,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:04:41,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:04:41,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:04:40" (1/3) ... [2021-12-21 13:04:41,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd7e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:04:41, skipping insertion in model container [2021-12-21 13:04:41,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:04:40" (2/3) ... [2021-12-21 13:04:41,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd7e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:04:41, skipping insertion in model container [2021-12-21 13:04:41,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:04:41" (3/3) ... [2021-12-21 13:04:41,736 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2021-12-21 13:04:41,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:04:41,740 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:04:41,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:04:41,794 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 [2021-12-21 13:04:41,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:04:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 221 states have (on average 1.5475113122171946) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-21 13:04:41,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-21 13:04:41,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:41,821 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-12-21 13:04:41,821 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash -313384498, now seen corresponding path program 1 times [2021-12-21 13:04:41,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:41,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389515496] [2021-12-21 13:04:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:41,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:04:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:04:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:04:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 13:04:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:04:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:04:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:04:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:04:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:04:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:04:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 13:04:42,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389515496] [2021-12-21 13:04:42,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389515496] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:04:42,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817172749] [2021-12-21 13:04:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:42,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:42,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:04:42,276 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) [2021-12-21 13:04:42,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:04:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:42,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 13:04:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:04:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:04:42,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:04:42,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817172749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:42,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:04:42,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-21 13:04:42,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37066111] [2021-12-21 13:04:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:42,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:04:42,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:04:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:04:42,716 INFO L87 Difference]: Start difference. First operand has 278 states, 221 states have (on average 1.5475113122171946) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:42,744 INFO L93 Difference]: Finished difference Result 407 states and 598 transitions. [2021-12-21 13:04:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:04:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2021-12-21 13:04:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:42,754 INFO L225 Difference]: With dead ends: 407 [2021-12-21 13:04:42,754 INFO L226 Difference]: Without dead ends: 271 [2021-12-21 13:04:42,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:04:42,758 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:42,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:04:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-21 13:04:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-12-21 13:04:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 215 states have (on average 1.5395348837209302) internal successors, (331), 216 states have internal predecessors, (331), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-21 13:04:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 406 transitions. [2021-12-21 13:04:42,797 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 406 transitions. Word has length 105 [2021-12-21 13:04:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:42,798 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 406 transitions. [2021-12-21 13:04:42,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 406 transitions. [2021-12-21 13:04:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 13:04:42,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:42,802 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-12-21 13:04:42,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 13:04:43,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-21 13:04:43,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash 911408720, now seen corresponding path program 1 times [2021-12-21 13:04:43,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:43,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315780789] [2021-12-21 13:04:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:43,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:04:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:04:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:04:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 13:04:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:04:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:04:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:04:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:04:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:04:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:04:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 13:04:43,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:43,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315780789] [2021-12-21 13:04:43,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315780789] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:04:43,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296198765] [2021-12-21 13:04:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:43,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:43,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:04:43,205 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) [2021-12-21 13:04:43,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:04:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:04:43,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:04:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:04:43,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:04:43,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296198765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:43,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:04:43,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-21 13:04:43,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166057638] [2021-12-21 13:04:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:43,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:04:43,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:43,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:04:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:04:43,553 INFO L87 Difference]: Start difference. First operand 271 states and 406 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:43,579 INFO L93 Difference]: Finished difference Result 397 states and 579 transitions. [2021-12-21 13:04:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:04:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2021-12-21 13:04:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:43,582 INFO L225 Difference]: With dead ends: 397 [2021-12-21 13:04:43,583 INFO L226 Difference]: Without dead ends: 274 [2021-12-21 13:04:43,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:04:43,603 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:43,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 806 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:04:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-12-21 13:04:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2021-12-21 13:04:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 217 states have (on average 1.5345622119815667) internal successors, (333), 218 states have internal predecessors, (333), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-21 13:04:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 408 transitions. [2021-12-21 13:04:43,617 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 408 transitions. Word has length 106 [2021-12-21 13:04:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:43,618 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 408 transitions. [2021-12-21 13:04:43,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 408 transitions. [2021-12-21 13:04:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 13:04:43,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:43,620 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-21 13:04:43,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 13:04:43,838 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,SelfDestructingSolverStorable1 [2021-12-21 13:04:43,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1386569223, now seen corresponding path program 1 times [2021-12-21 13:04:43,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:43,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099972458] [2021-12-21 13:04:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:43,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:04:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:04:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:04:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 13:04:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:04:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:04:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:04:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:04:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:04:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:04:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:04:43,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099972458] [2021-12-21 13:04:43,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099972458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:04:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754491755] [2021-12-21 13:04:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:43,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:04:43,980 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) [2021-12-21 13:04:43,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:04:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:04:44,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:04:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:04:44,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:04:44,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754491755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:44,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:04:44,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-21 13:04:44,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140583277] [2021-12-21 13:04:44,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:44,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:04:44,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:04:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:04:44,349 INFO L87 Difference]: Start difference. First operand 273 states and 408 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:44,375 INFO L93 Difference]: Finished difference Result 571 states and 867 transitions. [2021-12-21 13:04:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:04:44,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2021-12-21 13:04:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:44,378 INFO L225 Difference]: With dead ends: 571 [2021-12-21 13:04:44,379 INFO L226 Difference]: Without dead ends: 325 [2021-12-21 13:04:44,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:04:44,381 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 99 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:44,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 780 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:04:44,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-21 13:04:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2021-12-21 13:04:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 250 states have (on average 1.548) internal successors, (387), 251 states have internal predecessors, (387), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-21 13:04:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 484 transitions. [2021-12-21 13:04:44,401 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 484 transitions. Word has length 112 [2021-12-21 13:04:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:44,402 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 484 transitions. [2021-12-21 13:04:44,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 484 transitions. [2021-12-21 13:04:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 13:04:44,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:44,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-21 13:04:44,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 13:04:44,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:44,628 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:44,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:44,628 INFO L85 PathProgramCache]: Analyzing trace with hash 208664483, now seen corresponding path program 1 times [2021-12-21 13:04:44,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:44,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193066133] [2021-12-21 13:04:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:44,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:04:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:04:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:04:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:04:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:04:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:04:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:04:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:04:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:04:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:04:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:04:44,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:44,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193066133] [2021-12-21 13:04:44,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193066133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:04:44,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636555475] [2021-12-21 13:04:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:44,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:44,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:04:44,765 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) [2021-12-21 13:04:44,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 13:04:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:44,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:04:44,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:04:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 13:04:45,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:04:45,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636555475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:45,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:04:45,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-21 13:04:45,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520710496] [2021-12-21 13:04:45,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:45,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:04:45,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:45,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:04:45,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:04:45,152 INFO L87 Difference]: Start difference. First operand 317 states and 484 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:45,227 INFO L93 Difference]: Finished difference Result 625 states and 958 transitions. [2021-12-21 13:04:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:04:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-12-21 13:04:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:45,235 INFO L225 Difference]: With dead ends: 625 [2021-12-21 13:04:45,235 INFO L226 Difference]: Without dead ends: 319 [2021-12-21 13:04:45,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:04:45,243 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 117 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:45,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1452 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:04:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-21 13:04:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2021-12-21 13:04:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 251 states have (on average 1.545816733067729) internal successors, (388), 253 states have internal predecessors, (388), 49 states have call successors, (49), 17 states have call predecessors, (49), 18 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2021-12-21 13:04:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 487 transitions. [2021-12-21 13:04:45,285 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 487 transitions. Word has length 113 [2021-12-21 13:04:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:45,294 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 487 transitions. [2021-12-21 13:04:45,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 487 transitions. [2021-12-21 13:04:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 13:04:45,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:45,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:45,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 13:04:45,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:45,518 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash 986410081, now seen corresponding path program 1 times [2021-12-21 13:04:45,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:45,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906693985] [2021-12-21 13:04:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:45,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:04:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:04:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 13:04:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:04:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:04:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:04:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:04:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:04:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:04:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:04:45,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:45,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906693985] [2021-12-21 13:04:45,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906693985] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:04:45,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990026884] [2021-12-21 13:04:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:45,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:45,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:04:45,624 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) [2021-12-21 13:04:45,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 13:04:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:45,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 13:04:45,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:04:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 13:04:46,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:04:46,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990026884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:46,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:04:46,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-21 13:04:46,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155214352] [2021-12-21 13:04:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:46,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:04:46,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:04:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:04:46,011 INFO L87 Difference]: Start difference. First operand 319 states and 487 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:46,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:46,075 INFO L93 Difference]: Finished difference Result 627 states and 963 transitions. [2021-12-21 13:04:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:04:46,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-12-21 13:04:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:46,078 INFO L225 Difference]: With dead ends: 627 [2021-12-21 13:04:46,078 INFO L226 Difference]: Without dead ends: 321 [2021-12-21 13:04:46,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:04:46,080 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 116 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:46,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1441 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:04:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-21 13:04:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-12-21 13:04:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 252 states have (on average 1.5436507936507937) internal successors, (389), 255 states have internal predecessors, (389), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2021-12-21 13:04:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 493 transitions. [2021-12-21 13:04:46,110 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 493 transitions. Word has length 114 [2021-12-21 13:04:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:46,110 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 493 transitions. [2021-12-21 13:04:46,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 493 transitions. [2021-12-21 13:04:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-21 13:04:46,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:46,127 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-21 13:04:46,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 13:04:46,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:46,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:46,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1984465576, now seen corresponding path program 1 times [2021-12-21 13:04:46,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:46,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378507206] [2021-12-21 13:04:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:46,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:04:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:04:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:04:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:04:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:04:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:04:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:04:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:04:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:04:46,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:46,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378507206] [2021-12-21 13:04:46,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378507206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:46,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:46,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:04:46,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254115476] [2021-12-21 13:04:46,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:46,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:04:46,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:04:46,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:04:46,493 INFO L87 Difference]: Start difference. First operand 321 states and 493 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:47,285 INFO L93 Difference]: Finished difference Result 677 states and 1045 transitions. [2021-12-21 13:04:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:04:47,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-12-21 13:04:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:47,287 INFO L225 Difference]: With dead ends: 677 [2021-12-21 13:04:47,288 INFO L226 Difference]: Without dead ends: 379 [2021-12-21 13:04:47,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:04:47,289 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 742 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:47,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 1233 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:04:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-21 13:04:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 321. [2021-12-21 13:04:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 252 states have (on average 1.5436507936507937) internal successors, (389), 255 states have internal predecessors, (389), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2021-12-21 13:04:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 492 transitions. [2021-12-21 13:04:47,323 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 492 transitions. Word has length 115 [2021-12-21 13:04:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:47,324 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 492 transitions. [2021-12-21 13:04:47,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 492 transitions. [2021-12-21 13:04:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 13:04:47,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:47,326 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-12-21 13:04:47,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:04:47,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:47,327 INFO L85 PathProgramCache]: Analyzing trace with hash 808233348, now seen corresponding path program 2 times [2021-12-21 13:04:47,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:47,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946726953] [2021-12-21 13:04:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:47,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:04:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:04:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:04:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:04:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:04:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:04:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:04:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:04:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:04:47,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:47,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946726953] [2021-12-21 13:04:47,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946726953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:47,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:47,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:04:47,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538415633] [2021-12-21 13:04:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:47,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:04:47,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:04:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:04:47,398 INFO L87 Difference]: Start difference. First operand 321 states and 492 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:48,110 INFO L93 Difference]: Finished difference Result 679 states and 1048 transitions. [2021-12-21 13:04:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:04:48,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2021-12-21 13:04:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:48,112 INFO L225 Difference]: With dead ends: 679 [2021-12-21 13:04:48,112 INFO L226 Difference]: Without dead ends: 381 [2021-12-21 13:04:48,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:04:48,114 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 738 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:48,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1234 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:04:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-21 13:04:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 323. [2021-12-21 13:04:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 253 states have (on average 1.541501976284585) internal successors, (390), 257 states have internal predecessors, (390), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2021-12-21 13:04:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 495 transitions. [2021-12-21 13:04:48,128 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 495 transitions. Word has length 116 [2021-12-21 13:04:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:48,128 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 495 transitions. [2021-12-21 13:04:48,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:04:48,128 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 495 transitions. [2021-12-21 13:04:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 13:04:48,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:48,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-21 13:04:48,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:04:48,130 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash 355144749, now seen corresponding path program 1 times [2021-12-21 13:04:48,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:48,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832204134] [2021-12-21 13:04:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:48,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:04:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:04:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:04:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:04:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:04:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:04:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:04:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:04:48,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:48,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832204134] [2021-12-21 13:04:48,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832204134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:48,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:48,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:04:48,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722624060] [2021-12-21 13:04:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:48,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:04:48,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:04:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:04:48,226 INFO L87 Difference]: Start difference. First operand 323 states and 495 transitions. Second operand has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:04:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:49,309 INFO L93 Difference]: Finished difference Result 677 states and 1043 transitions. [2021-12-21 13:04:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 13:04:49,310 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-12-21 13:04:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:49,312 INFO L225 Difference]: With dead ends: 677 [2021-12-21 13:04:49,312 INFO L226 Difference]: Without dead ends: 381 [2021-12-21 13:04:49,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:04:49,314 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 844 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:49,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 1607 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:04:49,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-21 13:04:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 323. [2021-12-21 13:04:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 253 states have (on average 1.541501976284585) internal successors, (390), 257 states have internal predecessors, (390), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2021-12-21 13:04:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 494 transitions. [2021-12-21 13:04:49,332 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 494 transitions. Word has length 117 [2021-12-21 13:04:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:49,332 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 494 transitions. [2021-12-21 13:04:49,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:04:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 494 transitions. [2021-12-21 13:04:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 13:04:49,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:49,333 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-12-21 13:04:49,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:04:49,334 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash -675608032, now seen corresponding path program 2 times [2021-12-21 13:04:49,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:49,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243905217] [2021-12-21 13:04:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:49,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:04:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:04:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:04:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:04:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:04:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:04:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:04:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:04:49,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:49,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243905217] [2021-12-21 13:04:49,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243905217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:49,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:49,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:04:49,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665105160] [2021-12-21 13:04:49,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:49,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:04:49,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:04:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:04:49,443 INFO L87 Difference]: Start difference. First operand 323 states and 494 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:04:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:50,508 INFO L93 Difference]: Finished difference Result 679 states and 1049 transitions. [2021-12-21 13:04:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 13:04:50,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2021-12-21 13:04:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:50,511 INFO L225 Difference]: With dead ends: 679 [2021-12-21 13:04:50,511 INFO L226 Difference]: Without dead ends: 383 [2021-12-21 13:04:50,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:04:50,512 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 840 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:50,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 1608 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:04:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-12-21 13:04:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 325. [2021-12-21 13:04:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 254 states have (on average 1.5393700787401574) internal successors, (391), 259 states have internal predecessors, (391), 49 states have call successors, (49), 17 states have call predecessors, (49), 21 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2021-12-21 13:04:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 500 transitions. [2021-12-21 13:04:50,525 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 500 transitions. Word has length 118 [2021-12-21 13:04:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:50,526 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 500 transitions. [2021-12-21 13:04:50,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:04:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 500 transitions. [2021-12-21 13:04:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-21 13:04:50,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:50,527 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-12-21 13:04:50,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:04:50,528 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:50,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1771087954, now seen corresponding path program 1 times [2021-12-21 13:04:50,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:50,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253790655] [2021-12-21 13:04:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:50,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:04:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:04:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:04:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:04:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:04:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:04:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:04:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:50,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:50,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253790655] [2021-12-21 13:04:50,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253790655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:04:50,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008401879] [2021-12-21 13:04:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:50,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:50,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:04:50,596 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) [2021-12-21 13:04:50,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 13:04:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:50,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:04:50,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:04:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:51,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:04:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:51,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008401879] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:04:51,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:04:51,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-21 13:04:51,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660010612] [2021-12-21 13:04:51,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:04:51,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 13:04:51,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 13:04:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:51,194 INFO L87 Difference]: Start difference. First operand 325 states and 500 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 13:04:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:52,126 INFO L93 Difference]: Finished difference Result 833 states and 1347 transitions. [2021-12-21 13:04:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:04:52,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2021-12-21 13:04:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:52,131 INFO L225 Difference]: With dead ends: 833 [2021-12-21 13:04:52,131 INFO L226 Difference]: Without dead ends: 710 [2021-12-21 13:04:52,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:04:52,133 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 933 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:52,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1648 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:04:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-21 13:04:52,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 628. [2021-12-21 13:04:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 493 states have (on average 1.6004056795131847) internal successors, (789), 498 states have internal predecessors, (789), 113 states have call successors, (113), 17 states have call predecessors, (113), 21 states have return successors, (134), 112 states have call predecessors, (134), 112 states have call successors, (134) [2021-12-21 13:04:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1036 transitions. [2021-12-21 13:04:52,169 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1036 transitions. Word has length 119 [2021-12-21 13:04:52,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:52,170 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1036 transitions. [2021-12-21 13:04:52,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 13:04:52,170 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1036 transitions. [2021-12-21 13:04:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 13:04:52,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:52,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:52,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 13:04:52,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:04:52,389 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1209872817, now seen corresponding path program 1 times [2021-12-21 13:04:52,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:52,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84856686] [2021-12-21 13:04:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:52,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:04:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:04:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:04:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:04:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:04:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:04:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:04:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:52,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:52,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84856686] [2021-12-21 13:04:52,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84856686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:52,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:52,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:52,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881938324] [2021-12-21 13:04:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:52,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:52,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:52,486 INFO L87 Difference]: Start difference. First operand 628 states and 1036 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:52,890 INFO L93 Difference]: Finished difference Result 1554 states and 2626 transitions. [2021-12-21 13:04:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:04:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-12-21 13:04:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:52,894 INFO L225 Difference]: With dead ends: 1554 [2021-12-21 13:04:52,894 INFO L226 Difference]: Without dead ends: 994 [2021-12-21 13:04:52,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:52,897 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 731 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:52,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1045 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:04:52,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-12-21 13:04:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 928. [2021-12-21 13:04:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 729 states have (on average 1.6104252400548698) internal successors, (1174), 734 states have internal predecessors, (1174), 177 states have call successors, (177), 17 states have call predecessors, (177), 21 states have return successors, (208), 176 states have call predecessors, (208), 176 states have call successors, (208) [2021-12-21 13:04:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1559 transitions. [2021-12-21 13:04:52,954 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1559 transitions. Word has length 125 [2021-12-21 13:04:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:52,954 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1559 transitions. [2021-12-21 13:04:52,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1559 transitions. [2021-12-21 13:04:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-21 13:04:52,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:52,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:52,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:04:52,958 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:52,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2036554710, now seen corresponding path program 1 times [2021-12-21 13:04:52,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149969610] [2021-12-21 13:04:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:52,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:04:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:04:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:04:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:04:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:04:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:04:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:04:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:53,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:53,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149969610] [2021-12-21 13:04:53,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149969610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:53,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:53,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:53,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019372126] [2021-12-21 13:04:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:53,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:53,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:53,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:53,018 INFO L87 Difference]: Start difference. First operand 928 states and 1559 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:53,574 INFO L93 Difference]: Finished difference Result 2269 states and 3871 transitions. [2021-12-21 13:04:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:04:53,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-12-21 13:04:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:53,580 INFO L225 Difference]: With dead ends: 2269 [2021-12-21 13:04:53,580 INFO L226 Difference]: Without dead ends: 1462 [2021-12-21 13:04:53,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:53,583 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 729 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:53,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 1011 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:04:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-12-21 13:04:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1396. [2021-12-21 13:04:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1102 states have (on average 1.616152450090744) internal successors, (1781), 1107 states have internal predecessors, (1781), 272 states have call successors, (272), 17 states have call predecessors, (272), 21 states have return successors, (303), 271 states have call predecessors, (303), 271 states have call successors, (303) [2021-12-21 13:04:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2356 transitions. [2021-12-21 13:04:53,637 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2356 transitions. Word has length 126 [2021-12-21 13:04:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:53,638 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 2356 transitions. [2021-12-21 13:04:53,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2356 transitions. [2021-12-21 13:04:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-21 13:04:53,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:53,644 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:53,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:04:53,644 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:53,645 INFO L85 PathProgramCache]: Analyzing trace with hash 755234193, now seen corresponding path program 1 times [2021-12-21 13:04:53,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65573174] [2021-12-21 13:04:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:53,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:04:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:04:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:04:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:04:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:04:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:04:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:04:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:53,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:53,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65573174] [2021-12-21 13:04:53,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65573174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:53,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:53,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:53,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383257764] [2021-12-21 13:04:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:53,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:53,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:53,717 INFO L87 Difference]: Start difference. First operand 1396 states and 2356 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:54,276 INFO L93 Difference]: Finished difference Result 3316 states and 5712 transitions. [2021-12-21 13:04:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:04:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-12-21 13:04:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:54,286 INFO L225 Difference]: With dead ends: 3316 [2021-12-21 13:04:54,286 INFO L226 Difference]: Without dead ends: 2166 [2021-12-21 13:04:54,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:54,290 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 727 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:54,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1015 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:04:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-12-21 13:04:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2100. [2021-12-21 13:04:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 1683 states have (on average 1.6209150326797386) internal successors, (2728), 1688 states have internal predecessors, (2728), 395 states have call successors, (395), 17 states have call predecessors, (395), 21 states have return successors, (442), 394 states have call predecessors, (442), 394 states have call successors, (442) [2021-12-21 13:04:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 3565 transitions. [2021-12-21 13:04:54,366 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 3565 transitions. Word has length 127 [2021-12-21 13:04:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:54,383 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 3565 transitions. [2021-12-21 13:04:54,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 3565 transitions. [2021-12-21 13:04:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 13:04:54,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:54,392 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:54,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:04:54,392 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -795510101, now seen corresponding path program 1 times [2021-12-21 13:04:54,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:54,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876836557] [2021-12-21 13:04:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:54,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:04:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:04:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:04:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:04:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:04:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:04:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:04:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:54,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:54,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876836557] [2021-12-21 13:04:54,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876836557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:54,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:54,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:54,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579356870] [2021-12-21 13:04:54,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:54,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:54,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:54,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:54,456 INFO L87 Difference]: Start difference. First operand 2100 states and 3565 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:54,961 INFO L93 Difference]: Finished difference Result 4935 states and 8566 transitions. [2021-12-21 13:04:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:04:54,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-12-21 13:04:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:54,983 INFO L225 Difference]: With dead ends: 4935 [2021-12-21 13:04:54,984 INFO L226 Difference]: Without dead ends: 3285 [2021-12-21 13:04:55,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:55,001 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 725 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:55,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1009 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:04:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2021-12-21 13:04:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3219. [2021-12-21 13:04:55,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2623 states have (on average 1.6237133053755242) internal successors, (4259), 2628 states have internal predecessors, (4259), 574 states have call successors, (574), 17 states have call predecessors, (574), 21 states have return successors, (647), 573 states have call predecessors, (647), 573 states have call successors, (647) [2021-12-21 13:04:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 5480 transitions. [2021-12-21 13:04:55,136 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 5480 transitions. Word has length 128 [2021-12-21 13:04:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:55,136 INFO L470 AbstractCegarLoop]: Abstraction has 3219 states and 5480 transitions. [2021-12-21 13:04:55,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 5480 transitions. [2021-12-21 13:04:55,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-21 13:04:55,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:55,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:55,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:04:55,147 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2137708781, now seen corresponding path program 1 times [2021-12-21 13:04:55,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:55,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227807099] [2021-12-21 13:04:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:55,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:04:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:04:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:04:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:04:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:04:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:04:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:04:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:55,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:55,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227807099] [2021-12-21 13:04:55,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227807099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:55,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:55,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:55,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131939] [2021-12-21 13:04:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:55,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:55,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:55,216 INFO L87 Difference]: Start difference. First operand 3219 states and 5480 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:55,932 INFO L93 Difference]: Finished difference Result 7853 states and 13665 transitions. [2021-12-21 13:04:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:04:55,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-12-21 13:04:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:55,953 INFO L225 Difference]: With dead ends: 7853 [2021-12-21 13:04:55,953 INFO L226 Difference]: Without dead ends: 5316 [2021-12-21 13:04:55,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:55,960 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 723 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:55,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1043 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:04:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states. [2021-12-21 13:04:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 5250. [2021-12-21 13:04:56,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 4278 states have (on average 1.6154745208041141) internal successors, (6911), 4283 states have internal predecessors, (6911), 950 states have call successors, (950), 17 states have call predecessors, (950), 21 states have return successors, (1067), 949 states have call predecessors, (1067), 949 states have call successors, (1067) [2021-12-21 13:04:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 8928 transitions. [2021-12-21 13:04:56,184 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 8928 transitions. Word has length 129 [2021-12-21 13:04:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:56,185 INFO L470 AbstractCegarLoop]: Abstraction has 5250 states and 8928 transitions. [2021-12-21 13:04:56,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 8928 transitions. [2021-12-21 13:04:56,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 13:04:56,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:56,226 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:56,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:04:56,226 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:56,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1854632113, now seen corresponding path program 1 times [2021-12-21 13:04:56,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:56,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952178075] [2021-12-21 13:04:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:56,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:04:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:04:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:04:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:04:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:04:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:04:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:04:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:56,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:56,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952178075] [2021-12-21 13:04:56,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952178075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:56,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:56,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:56,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182871725] [2021-12-21 13:04:56,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:56,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:56,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:56,294 INFO L87 Difference]: Start difference. First operand 5250 states and 8928 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:57,176 INFO L93 Difference]: Finished difference Result 12995 states and 22574 transitions. [2021-12-21 13:04:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:04:57,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-12-21 13:04:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:57,218 INFO L225 Difference]: With dead ends: 12995 [2021-12-21 13:04:57,218 INFO L226 Difference]: Without dead ends: 8804 [2021-12-21 13:04:57,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:57,230 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 721 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:57,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [736 Valid, 1014 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:04:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2021-12-21 13:04:57,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 8738. [2021-12-21 13:04:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8738 states, 7160 states have (on average 1.6124301675977655) internal successors, (11545), 7165 states have internal predecessors, (11545), 1556 states have call successors, (1556), 17 states have call predecessors, (1556), 21 states have return successors, (1751), 1555 states have call predecessors, (1751), 1555 states have call successors, (1751) [2021-12-21 13:04:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 14852 transitions. [2021-12-21 13:04:57,619 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 14852 transitions. Word has length 130 [2021-12-21 13:04:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:57,619 INFO L470 AbstractCegarLoop]: Abstraction has 8738 states and 14852 transitions. [2021-12-21 13:04:57,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 14852 transitions. [2021-12-21 13:04:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 13:04:57,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:57,639 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:57,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:04:57,640 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1741509135, now seen corresponding path program 1 times [2021-12-21 13:04:57,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928343581] [2021-12-21 13:04:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:57,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:04:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:04:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:04:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:04:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:04:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:04:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:04:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:57,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:57,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928343581] [2021-12-21 13:04:57,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928343581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:57,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:57,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:57,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784883501] [2021-12-21 13:04:57,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:57,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:57,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:57,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:57,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:57,716 INFO L87 Difference]: Start difference. First operand 8738 states and 14852 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:58,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:58,808 INFO L93 Difference]: Finished difference Result 22654 states and 39280 transitions. [2021-12-21 13:04:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:04:58,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-12-21 13:04:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:58,849 INFO L225 Difference]: With dead ends: 22654 [2021-12-21 13:04:58,850 INFO L226 Difference]: Without dead ends: 15397 [2021-12-21 13:04:58,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:58,866 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 719 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:58,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1049 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:04:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15397 states. [2021-12-21 13:04:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15397 to 15331. [2021-12-21 13:04:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15331 states, 12550 states have (on average 1.6024701195219124) internal successors, (20111), 12555 states have internal predecessors, (20111), 2759 states have call successors, (2759), 17 states have call predecessors, (2759), 21 states have return successors, (3098), 2758 states have call predecessors, (3098), 2758 states have call successors, (3098) [2021-12-21 13:04:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15331 states to 15331 states and 25968 transitions. [2021-12-21 13:04:59,545 INFO L78 Accepts]: Start accepts. Automaton has 15331 states and 25968 transitions. Word has length 131 [2021-12-21 13:04:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:59,545 INFO L470 AbstractCegarLoop]: Abstraction has 15331 states and 25968 transitions. [2021-12-21 13:04:59,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:04:59,545 INFO L276 IsEmpty]: Start isEmpty. Operand 15331 states and 25968 transitions. [2021-12-21 13:04:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 13:04:59,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:59,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:04:59,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:04:59,569 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash -873756304, now seen corresponding path program 1 times [2021-12-21 13:04:59,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:59,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984598853] [2021-12-21 13:04:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:59,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:04:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:04:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:04:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:04:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:04:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:04:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:04:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:04:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:04:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:04:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:04:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:04:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:04:59,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:59,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984598853] [2021-12-21 13:04:59,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984598853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:59,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:59,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:59,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516412691] [2021-12-21 13:04:59,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:59,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:59,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:59,644 INFO L87 Difference]: Start difference. First operand 15331 states and 25968 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:01,151 INFO L93 Difference]: Finished difference Result 40610 states and 70263 transitions. [2021-12-21 13:05:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:05:01,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-21 13:05:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:01,235 INFO L225 Difference]: With dead ends: 40610 [2021-12-21 13:05:01,235 INFO L226 Difference]: Without dead ends: 27367 [2021-12-21 13:05:01,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:05:01,260 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 717 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:01,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 1011 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:05:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27367 states. [2021-12-21 13:05:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27367 to 27301. [2021-12-21 13:05:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27301 states, 22481 states have (on average 1.5977492104443753) internal successors, (35919), 22486 states have internal predecessors, (35919), 4798 states have call successors, (4798), 17 states have call predecessors, (4798), 21 states have return successors, (5411), 4797 states have call predecessors, (5411), 4797 states have call successors, (5411) [2021-12-21 13:05:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27301 states to 27301 states and 46128 transitions. [2021-12-21 13:05:02,296 INFO L78 Accepts]: Start accepts. Automaton has 27301 states and 46128 transitions. Word has length 132 [2021-12-21 13:05:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:02,296 INFO L470 AbstractCegarLoop]: Abstraction has 27301 states and 46128 transitions. [2021-12-21 13:05:02,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 27301 states and 46128 transitions. [2021-12-21 13:05:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 13:05:02,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:02,322 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:05:02,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:05:02,322 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash -500581487, now seen corresponding path program 1 times [2021-12-21 13:05:02,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:02,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709958455] [2021-12-21 13:05:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:02,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:05:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:05:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:05:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:05:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:05:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:05:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:05:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:02,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:02,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709958455] [2021-12-21 13:05:02,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709958455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:02,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:02,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:05:02,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330510357] [2021-12-21 13:05:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:02,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:05:02,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:05:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:05:02,399 INFO L87 Difference]: Start difference. First operand 27301 states and 46128 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:04,748 INFO L93 Difference]: Finished difference Result 74397 states and 127862 transitions. [2021-12-21 13:05:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:05:04,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-12-21 13:05:04,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:04,916 INFO L225 Difference]: With dead ends: 74397 [2021-12-21 13:05:04,916 INFO L226 Difference]: Without dead ends: 49916 [2021-12-21 13:05:04,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:05:04,968 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 715 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:04,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 1022 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:05:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49916 states. [2021-12-21 13:05:06,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49916 to 49850. [2021-12-21 13:05:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49850 states, 41315 states have (on average 1.5916737262495462) internal successors, (65760), 41320 states have internal predecessors, (65760), 8513 states have call successors, (8513), 17 states have call predecessors, (8513), 21 states have return successors, (9658), 8512 states have call predecessors, (9658), 8512 states have call successors, (9658) [2021-12-21 13:05:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49850 states to 49850 states and 83931 transitions. [2021-12-21 13:05:07,283 INFO L78 Accepts]: Start accepts. Automaton has 49850 states and 83931 transitions. Word has length 133 [2021-12-21 13:05:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:07,283 INFO L470 AbstractCegarLoop]: Abstraction has 49850 states and 83931 transitions. [2021-12-21 13:05:07,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 49850 states and 83931 transitions. [2021-12-21 13:05:07,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 13:05:07,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:07,320 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:05:07,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:05:07,320 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash 925174768, now seen corresponding path program 1 times [2021-12-21 13:05:07,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682655085] [2021-12-21 13:05:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:07,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:05:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:05:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:05:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:05:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:05:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:05:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:05:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:07,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:07,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682655085] [2021-12-21 13:05:07,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682655085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:07,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:07,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:05:07,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626467550] [2021-12-21 13:05:07,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:07,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:05:07,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:07,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:05:07,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:05:07,408 INFO L87 Difference]: Start difference. First operand 49850 states and 83931 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:10,974 INFO L93 Difference]: Finished difference Result 92883 states and 159993 transitions. [2021-12-21 13:05:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:05:10,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-12-21 13:05:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:11,336 INFO L225 Difference]: With dead ends: 92883 [2021-12-21 13:05:11,336 INFO L226 Difference]: Without dead ends: 92760 [2021-12-21 13:05:11,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:05:11,377 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 713 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:11,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1020 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:05:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92760 states. [2021-12-21 13:05:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92760 to 92694. [2021-12-21 13:05:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92694 states, 77360 states have (on average 1.584100310237849) internal successors, (122546), 77365 states have internal predecessors, (122546), 15312 states have call successors, (15312), 17 states have call predecessors, (15312), 21 states have return successors, (17503), 15311 states have call predecessors, (17503), 15311 states have call successors, (17503) [2021-12-21 13:05:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92694 states to 92694 states and 155361 transitions. [2021-12-21 13:05:15,485 INFO L78 Accepts]: Start accepts. Automaton has 92694 states and 155361 transitions. Word has length 134 [2021-12-21 13:05:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:15,485 INFO L470 AbstractCegarLoop]: Abstraction has 92694 states and 155361 transitions. [2021-12-21 13:05:15,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 92694 states and 155361 transitions. [2021-12-21 13:05:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 13:05:15,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:15,531 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:05:15,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:05:15,531 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash -605011728, now seen corresponding path program 1 times [2021-12-21 13:05:15,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878794067] [2021-12-21 13:05:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:15,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:05:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:05:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:05:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:05:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:05:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:05:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 13:05:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:15,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:15,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878794067] [2021-12-21 13:05:15,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878794067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:15,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:15,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:05:15,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799128114] [2021-12-21 13:05:15,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:15,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:05:15,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:05:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:05:15,609 INFO L87 Difference]: Start difference. First operand 92694 states and 155361 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:18,928 INFO L93 Difference]: Finished difference Result 92865 states and 158879 transitions. [2021-12-21 13:05:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:05:18,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-12-21 13:05:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:19,385 INFO L225 Difference]: With dead ends: 92865 [2021-12-21 13:05:19,386 INFO L226 Difference]: Without dead ends: 92752 [2021-12-21 13:05:19,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:05:19,418 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 665 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:19,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1395 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:05:19,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92752 states. [2021-12-21 13:05:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92752 to 92694. [2021-12-21 13:05:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92694 states, 77360 states have (on average 1.5840873836608067) internal successors, (122545), 77365 states have internal predecessors, (122545), 15312 states have call successors, (15312), 17 states have call predecessors, (15312), 21 states have return successors, (17503), 15311 states have call predecessors, (17503), 15311 states have call successors, (17503) [2021-12-21 13:05:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92694 states to 92694 states and 155360 transitions. [2021-12-21 13:05:23,396 INFO L78 Accepts]: Start accepts. Automaton has 92694 states and 155360 transitions. Word has length 135 [2021-12-21 13:05:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:23,396 INFO L470 AbstractCegarLoop]: Abstraction has 92694 states and 155360 transitions. [2021-12-21 13:05:23,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:05:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 92694 states and 155360 transitions. [2021-12-21 13:05:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 13:05:23,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:23,443 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:05:23,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 13:05:23,444 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:23,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1455791745, now seen corresponding path program 1 times [2021-12-21 13:05:23,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:23,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838205782] [2021-12-21 13:05:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:23,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:05:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:05:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:05:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:05:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:05:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:05:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:05:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:05:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:23,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:23,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838205782] [2021-12-21 13:05:23,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838205782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:23,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:23,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:05:23,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559563210] [2021-12-21 13:05:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:23,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:05:23,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:05:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:05:23,529 INFO L87 Difference]: Start difference. First operand 92694 states and 155360 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:05:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:05:27,496 INFO L93 Difference]: Finished difference Result 93064 states and 159144 transitions. [2021-12-21 13:05:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 13:05:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2021-12-21 13:05:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:05:27,784 INFO L225 Difference]: With dead ends: 93064 [2021-12-21 13:05:27,785 INFO L226 Difference]: Without dead ends: 92951 [2021-12-21 13:05:27,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:05:27,832 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1303 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:05:27,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 1427 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:05:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92951 states. [2021-12-21 13:05:31,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92951 to 92809. [2021-12-21 13:05:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92809 states, 77453 states have (on average 1.583915406762811) internal successors, (122679), 77458 states have internal predecessors, (122679), 15323 states have call successors, (15323), 26 states have call predecessors, (15323), 32 states have return successors, (17516), 15324 states have call predecessors, (17516), 15321 states have call successors, (17516) [2021-12-21 13:05:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92809 states to 92809 states and 155518 transitions. [2021-12-21 13:05:31,977 INFO L78 Accepts]: Start accepts. Automaton has 92809 states and 155518 transitions. Word has length 142 [2021-12-21 13:05:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:05:31,977 INFO L470 AbstractCegarLoop]: Abstraction has 92809 states and 155518 transitions. [2021-12-21 13:05:31,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:05:31,978 INFO L276 IsEmpty]: Start isEmpty. Operand 92809 states and 155518 transitions. [2021-12-21 13:05:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-21 13:05:32,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:05:32,028 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-21 13:05:32,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 13:05:32,028 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:05:32,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:05:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1176085473, now seen corresponding path program 1 times [2021-12-21 13:05:32,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:05:32,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907278898] [2021-12-21 13:05:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:05:32,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:05:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:05:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:05:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:05:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:05:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:05:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:05:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:05:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:05:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:05:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:05:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:05:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:05:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 13:05:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 13:05:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:05:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:05:32,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:05:32,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907278898] [2021-12-21 13:05:32,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907278898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:05:32,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:05:32,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-21 13:05:32,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575971538] [2021-12-21 13:05:32,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:05:32,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 13:05:32,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:05:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 13:05:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:05:32,202 INFO L87 Difference]: Start difference. First operand 92809 states and 155518 transitions. Second operand has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 12 states have internal predecessors, (100), 8 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14)