./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product22.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_spec0_product22.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 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:00:37,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:00:37,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:00:37,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:00:37,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:00:37,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:00:37,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:00:37,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:00:37,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:00:37,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:00:37,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:00:37,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:00:37,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:00:37,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:00:37,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:00:37,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:00:37,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:00:37,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:00:37,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:00:37,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:00:37,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:00:37,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:00:37,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:00:37,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:00:37,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:00:37,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:00:37,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:00:37,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:00:37,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:00:37,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:00:37,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:00:37,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:00:37,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:00:37,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:00:37,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:00:37,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:00:37,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:00:37,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:00:37,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:00:37,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:00:37,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:00:37,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:00:37,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:00:37,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:00:37,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:00:37,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:00:37,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:00:37,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:00:37,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:00:37,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:00:37,866 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:00:37,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:00:37,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:00:37,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:00:37,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:00:37,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:00:37,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:00:37,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:00:37,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:00:37,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:00:37,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:00:37,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:00:37,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:00:37,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:00:37,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:00:37,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:00:37,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:00:37,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:00:37,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:00:37,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:00:37,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:00:37,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:00:37,870 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:00:37,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:00:37,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:00:37,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:00:37,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 [2021-12-21 13:00:38,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:00:38,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:00:38,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:00:38,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:00:38,089 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:00:38,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2021-12-21 13:00:38,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9dc997b/afeaaf54ec864555bd8a753b394b9499/FLAG1ebea4c72 [2021-12-21 13:00:38,526 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:00:38,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2021-12-21 13:00:38,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9dc997b/afeaaf54ec864555bd8a753b394b9499/FLAG1ebea4c72 [2021-12-21 13:00:38,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9dc997b/afeaaf54ec864555bd8a753b394b9499 [2021-12-21 13:00:38,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:00:38,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:00:38,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:00:38,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:00:38,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:00:38,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:00:38" (1/1) ... [2021-12-21 13:00:38,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3c8c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:38, skipping insertion in model container [2021-12-21 13:00:38,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:00:38" (1/1) ... [2021-12-21 13:00:38,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:00:38,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:00:39,125 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_spec0_product22.cil.c[4724,4737] [2021-12-21 13:00:39,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:00:39,389 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:00:39,413 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_spec0_product22.cil.c[4724,4737] [2021-12-21 13:00:39,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:00:39,485 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:00:39,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39 WrapperNode [2021-12-21 13:00:39,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:00:39,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:00:39,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:00:39,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:00:39,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,558 INFO L137 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1008 [2021-12-21 13:00:39,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:00:39,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:00:39,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:00:39,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:00:39,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:00:39,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:00:39,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:00:39,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:00:39,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (1/1) ... [2021-12-21 13:00:39,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:00:39,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:39,637 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 13:00:39,656 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 13:00:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-21 13:00:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-21 13:00:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-21 13:00:39,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-21 13:00:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:00:39,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:00:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:00:39,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:00:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-21 13:00:39,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-21 13:00:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:00:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:00:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-21 13:00:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-21 13:00:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:00:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:00:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:00:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-21 13:00:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-21 13:00:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-21 13:00:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-21 13:00:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:00:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:00:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:00:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:00:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:00:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:00:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:00:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:00:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:00:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:00:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:00:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-21 13:00:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-21 13:00:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:00:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:00:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-21 13:00:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-21 13:00:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:00:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:00:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:00:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:00:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:00:39,874 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:00:39,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:00:40,409 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:00:40,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:00:40,416 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:00:40,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:00:40 BoogieIcfgContainer [2021-12-21 13:00:40,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:00:40,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:00:40,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:00:40,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:00:40,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:00:38" (1/3) ... [2021-12-21 13:00:40,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44993036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:00:40, skipping insertion in model container [2021-12-21 13:00:40,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:39" (2/3) ... [2021-12-21 13:00:40,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44993036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:00:40, skipping insertion in model container [2021-12-21 13:00:40,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:00:40" (3/3) ... [2021-12-21 13:00:40,429 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product22.cil.c [2021-12-21 13:00:40,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:00:40,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:00:40,475 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:00:40,479 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 13:00:40,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:00:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 251 states have (on average 1.5258964143426295) internal successors, (383), 255 states have internal predecessors, (383), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-21 13:00:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-21 13:00:40,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:40,510 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-12-21 13:00:40,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash 524958238, now seen corresponding path program 1 times [2021-12-21 13:00:40,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:40,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506000327] [2021-12-21 13:00:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:40,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 13:00:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:00:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:00:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:00:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:00:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:00:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:00:40,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:40,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506000327] [2021-12-21 13:00:40,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506000327] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:40,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607327261] [2021-12-21 13:00:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:40,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:40,915 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 13:00:40,916 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 13:00:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 13:00:41,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 13:00:41,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:41,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607327261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:41,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:41,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-21 13:00:41,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494424802] [2021-12-21 13:00:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:41,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:00:41,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:41,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:00:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:41,402 INFO L87 Difference]: Start difference. First operand has 322 states, 251 states have (on average 1.5258964143426295) internal successors, (383), 255 states have internal predecessors, (383), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:41,457 INFO L93 Difference]: Finished difference Result 485 states and 712 transitions. [2021-12-21 13:00:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:00:41,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2021-12-21 13:00:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:41,479 INFO L225 Difference]: With dead ends: 485 [2021-12-21 13:00:41,480 INFO L226 Difference]: Without dead ends: 315 [2021-12-21 13:00:41,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 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 13:00:41,490 INFO L933 BasicCegarLoop]: 479 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, 479 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 13:00:41,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-21 13:00:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-21 13:00:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 245 states have (on average 1.5183673469387755) internal successors, (372), 248 states have internal predecessors, (372), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-21 13:00:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2021-12-21 13:00:41,545 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 119 [2021-12-21 13:00:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:41,546 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2021-12-21 13:00:41,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2021-12-21 13:00:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-21 13:00:41,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:41,555 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-12-21 13:00:41,580 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 13:00:41,767 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 13:00:41,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1883674606, now seen corresponding path program 1 times [2021-12-21 13:00:41,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:41,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75715953] [2021-12-21 13:00:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:41,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 13:00:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 13:00:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:00:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:00:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:00:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:00:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:00:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:00:41,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:41,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75715953] [2021-12-21 13:00:41,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75715953] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:41,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113581514] [2021-12-21 13:00:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:41,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:41,940 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 13:00:41,941 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 13:00:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:00:42,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 13:00:42,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:42,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113581514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:42,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:42,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:00:42,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320729534] [2021-12-21 13:00:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:42,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:00:42,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:00:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:42,331 INFO L87 Difference]: Start difference. First operand 315 states and 471 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:42,354 INFO L93 Difference]: Finished difference Result 475 states and 693 transitions. [2021-12-21 13:00:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:00:42,355 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-12-21 13:00:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:42,357 INFO L225 Difference]: With dead ends: 475 [2021-12-21 13:00:42,358 INFO L226 Difference]: Without dead ends: 318 [2021-12-21 13:00:42,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:42,359 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 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 13:00:42,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-21 13:00:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2021-12-21 13:00:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 247 states have (on average 1.51417004048583) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-21 13:00:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 473 transitions. [2021-12-21 13:00:42,382 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 473 transitions. Word has length 120 [2021-12-21 13:00:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:42,383 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 473 transitions. [2021-12-21 13:00:42,383 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 473 transitions. [2021-12-21 13:00:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-21 13:00:42,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:42,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-12-21 13:00:42,404 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 13:00:42,601 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 13:00:42,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:42,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash -932218519, now seen corresponding path program 1 times [2021-12-21 13:00:42,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:42,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861836825] [2021-12-21 13:00:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:42,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:00:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:00:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:00:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:00:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:00:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:00:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:00:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 13:00:42,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:42,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861836825] [2021-12-21 13:00:42,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861836825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:42,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922523774] [2021-12-21 13:00:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:42,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:42,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:42,761 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 13:00:42,775 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 13:00:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:00:43,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 13:00:43,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:43,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922523774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:43,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:43,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:00:43,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988932351] [2021-12-21 13:00:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:43,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:00:43,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:00:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:43,185 INFO L87 Difference]: Start difference. First operand 317 states and 473 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:43,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:43,223 INFO L93 Difference]: Finished difference Result 669 states and 1013 transitions. [2021-12-21 13:00:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:00:43,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-21 13:00:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:43,227 INFO L225 Difference]: With dead ends: 669 [2021-12-21 13:00:43,227 INFO L226 Difference]: Without dead ends: 379 [2021-12-21 13:00:43,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:43,231 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 115 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 914 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 13:00:43,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 914 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-21 13:00:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 371. [2021-12-21 13:00:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 290 states have (on average 1.5310344827586206) internal successors, (444), 293 states have internal predecessors, (444), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-21 13:00:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 565 transitions. [2021-12-21 13:00:43,276 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 565 transitions. Word has length 129 [2021-12-21 13:00:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:43,277 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 565 transitions. [2021-12-21 13:00:43,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 565 transitions. [2021-12-21 13:00:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 13:00:43,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:43,279 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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 13:00:43,307 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 13:00:43,505 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 13:00:43,506 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:43,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash -941355877, now seen corresponding path program 1 times [2021-12-21 13:00:43,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:43,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448441258] [2021-12-21 13:00:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:43,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:00:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:00:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:00:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:00:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:00:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:00:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:00:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 13:00:43,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:43,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448441258] [2021-12-21 13:00:43,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448441258] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:43,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867683996] [2021-12-21 13:00:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:43,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:43,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:43,625 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 13:00:43,641 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 13:00:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:43,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:00:43,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 13:00:44,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:44,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867683996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:44,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:44,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-21 13:00:44,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596507867] [2021-12-21 13:00:44,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:44,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:00:44,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:00:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:44,102 INFO L87 Difference]: Start difference. First operand 371 states and 565 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:44,156 INFO L93 Difference]: Finished difference Result 733 states and 1120 transitions. [2021-12-21 13:00:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:00:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2021-12-21 13:00:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:44,159 INFO L225 Difference]: With dead ends: 733 [2021-12-21 13:00:44,159 INFO L226 Difference]: Without dead ends: 373 [2021-12-21 13:00:44,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:44,162 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 133 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1696 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 13:00:44,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1696 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-21 13:00:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-12-21 13:00:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 291 states have (on average 1.529209621993127) internal successors, (445), 295 states have internal predecessors, (445), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2021-12-21 13:00:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 568 transitions. [2021-12-21 13:00:44,178 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 568 transitions. Word has length 130 [2021-12-21 13:00:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:44,179 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 568 transitions. [2021-12-21 13:00:44,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 568 transitions. [2021-12-21 13:00:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 13:00:44,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:44,182 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1] [2021-12-21 13:00:44,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:44,396 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 13:00:44,396 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1756818314, now seen corresponding path program 1 times [2021-12-21 13:00:44,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:44,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375108822] [2021-12-21 13:00:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:44,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:00:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:00:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:00:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:00:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:00:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:00:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:00:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:00:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:00:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:00:44,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:44,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375108822] [2021-12-21 13:00:44,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375108822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:44,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287256245] [2021-12-21 13:00:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:44,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:44,540 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 13:00:44,542 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 13:00:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:44,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 13:00:44,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 13:00:44,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:44,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287256245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:44,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:44,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 13:00:44,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968848127] [2021-12-21 13:00:44,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:44,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:00:44,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:00:44,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:00:44,902 INFO L87 Difference]: Start difference. First operand 373 states and 568 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:44,947 INFO L93 Difference]: Finished difference Result 735 states and 1125 transitions. [2021-12-21 13:00:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:00:44,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2021-12-21 13:00:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:44,949 INFO L225 Difference]: With dead ends: 735 [2021-12-21 13:00:44,950 INFO L226 Difference]: Without dead ends: 375 [2021-12-21 13:00:44,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:00:44,952 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 132 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1685 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 13:00:44,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-21 13:00:44,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-21 13:00:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 297 states have internal predecessors, (446), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-21 13:00:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 574 transitions. [2021-12-21 13:00:44,989 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 574 transitions. Word has length 131 [2021-12-21 13:00:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:44,989 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 574 transitions. [2021-12-21 13:00:44,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 574 transitions. [2021-12-21 13:00:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 13:00:44,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:44,991 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-12-21 13:00:45,028 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 13:00:45,211 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 13:00:45,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1732568241, now seen corresponding path program 1 times [2021-12-21 13:00:45,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:45,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121402812] [2021-12-21 13:00:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:45,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:00:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:00:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:00:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:00:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:00:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:00:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:00:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 13:00:45,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:45,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121402812] [2021-12-21 13:00:45,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121402812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:45,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:45,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:00:45,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335703260] [2021-12-21 13:00:45,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:45,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:00:45,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:00:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:45,330 INFO L87 Difference]: Start difference. First operand 375 states and 574 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:46,606 INFO L93 Difference]: Finished difference Result 900 states and 1384 transitions. [2021-12-21 13:00:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:00:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2021-12-21 13:00:46,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:46,611 INFO L225 Difference]: With dead ends: 900 [2021-12-21 13:00:46,611 INFO L226 Difference]: Without dead ends: 548 [2021-12-21 13:00:46,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:00:46,614 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 1161 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:46,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 1640 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:00:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-21 13:00:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 375. [2021-12-21 13:00:46,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 297 states have internal predecessors, (446), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2021-12-21 13:00:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 573 transitions. [2021-12-21 13:00:46,648 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 573 transitions. Word has length 132 [2021-12-21 13:00:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:46,649 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 573 transitions. [2021-12-21 13:00:46,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 573 transitions. [2021-12-21 13:00:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 13:00:46,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:46,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-12-21 13:00:46,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:00:46,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1485769538, now seen corresponding path program 2 times [2021-12-21 13:00:46,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:46,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260334436] [2021-12-21 13:00:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:46,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:00:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:00:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:00:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:00:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:00:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:00:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:00:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:00:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 13:00:46,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:46,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260334436] [2021-12-21 13:00:46,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260334436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:46,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:46,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:00:46,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302632819] [2021-12-21 13:00:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:46,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:00:46,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:00:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:46,765 INFO L87 Difference]: Start difference. First operand 375 states and 573 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:47,997 INFO L93 Difference]: Finished difference Result 902 states and 1387 transitions. [2021-12-21 13:00:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:00:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2021-12-21 13:00:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:48,001 INFO L225 Difference]: With dead ends: 902 [2021-12-21 13:00:48,001 INFO L226 Difference]: Without dead ends: 550 [2021-12-21 13:00:48,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:00:48,003 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 1162 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:48,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1636 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:00:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-12-21 13:00:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 377. [2021-12-21 13:00:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 293 states have (on average 1.5255972696245734) internal successors, (447), 299 states have internal predecessors, (447), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-12-21 13:00:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 576 transitions. [2021-12-21 13:00:48,028 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 576 transitions. Word has length 133 [2021-12-21 13:00:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:48,029 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 576 transitions. [2021-12-21 13:00:48,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:00:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 576 transitions. [2021-12-21 13:00:48,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 13:00:48,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:48,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:48,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:00:48,031 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:48,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1953903468, now seen corresponding path program 1 times [2021-12-21 13:00:48,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:48,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101217902] [2021-12-21 13:00:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:48,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:00:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:00:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:00:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:00:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:00:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:00:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:00:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:00:48,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:48,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101217902] [2021-12-21 13:00:48,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101217902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:48,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:48,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:00:48,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028614136] [2021-12-21 13:00:48,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:48,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:00:48,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:00:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:48,173 INFO L87 Difference]: Start difference. First operand 377 states and 576 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 13:00:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:49,984 INFO L93 Difference]: Finished difference Result 900 states and 1382 transitions. [2021-12-21 13:00:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:00:49,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 134 [2021-12-21 13:00:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:49,987 INFO L225 Difference]: With dead ends: 900 [2021-12-21 13:00:49,987 INFO L226 Difference]: Without dead ends: 550 [2021-12-21 13:00:49,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:00:49,989 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1297 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 3081 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 3081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:49,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1297 Valid, 2157 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 3081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 13:00:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-12-21 13:00:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 377. [2021-12-21 13:00:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 293 states have (on average 1.5255972696245734) internal successors, (447), 299 states have internal predecessors, (447), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-12-21 13:00:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 575 transitions. [2021-12-21 13:00:50,011 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 575 transitions. Word has length 134 [2021-12-21 13:00:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:50,011 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 575 transitions. [2021-12-21 13:00:50,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 13:00:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 575 transitions. [2021-12-21 13:00:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 13:00:50,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:50,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-12-21 13:00:50,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:00:50,014 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1064517663, now seen corresponding path program 2 times [2021-12-21 13:00:50,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:50,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308058185] [2021-12-21 13:00:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:50,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:00:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:00:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:00:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:00:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:00:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:00:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:00:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 13:00:50,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308058185] [2021-12-21 13:00:50,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308058185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:50,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:50,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:00:50,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627465309] [2021-12-21 13:00:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:50,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:00:50,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:00:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:50,148 INFO L87 Difference]: Start difference. First operand 377 states and 575 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 13:00:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:51,854 INFO L93 Difference]: Finished difference Result 902 states and 1388 transitions. [2021-12-21 13:00:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:00:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 135 [2021-12-21 13:00:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:51,866 INFO L225 Difference]: With dead ends: 902 [2021-12-21 13:00:51,866 INFO L226 Difference]: Without dead ends: 552 [2021-12-21 13:00:51,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:00:51,868 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 1303 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:51,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 2118 Invalid, 3570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 13:00:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-12-21 13:00:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 379. [2021-12-21 13:00:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 294 states have (on average 1.5238095238095237) internal successors, (448), 301 states have internal predecessors, (448), 61 states have call successors, (61), 19 states have call predecessors, (61), 23 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2021-12-21 13:00:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 581 transitions. [2021-12-21 13:00:51,887 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 581 transitions. Word has length 135 [2021-12-21 13:00:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:51,888 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 581 transitions. [2021-12-21 13:00:51,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 13:00:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 581 transitions. [2021-12-21 13:00:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-21 13:00:51,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:51,890 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:51,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:00:51,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:51,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:51,891 INFO L85 PathProgramCache]: Analyzing trace with hash -217542937, now seen corresponding path program 1 times [2021-12-21 13:00:51,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:51,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590683649] [2021-12-21 13:00:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:51,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:00:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:00:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:00:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:00:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:00:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:00:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:00:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:52,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590683649] [2021-12-21 13:00:52,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590683649] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809906806] [2021-12-21 13:00:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:52,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:52,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:52,038 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 13:00:52,039 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 13:00:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:00:52,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:00:52,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:00:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:00:52,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809906806] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:00:52,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:00:52,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-21 13:00:52,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775164794] [2021-12-21 13:00:52,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:00:52,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 13:00:52,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:52,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 13:00:52,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:00:52,645 INFO L87 Difference]: Start difference. First operand 379 states and 581 transitions. Second operand has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-21 13:00:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:55,619 INFO L93 Difference]: Finished difference Result 1631 states and 2696 transitions. [2021-12-21 13:00:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 13:00:55,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 136 [2021-12-21 13:00:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:55,625 INFO L225 Difference]: With dead ends: 1631 [2021-12-21 13:00:55,625 INFO L226 Difference]: Without dead ends: 1283 [2021-12-21 13:00:55,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-21 13:00:55,627 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 3380 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 5013 mSolverCounterSat, 1316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 6329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1316 IncrementalHoareTripleChecker+Valid, 5013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:55,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3382 Valid, 3926 Invalid, 6329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1316 Valid, 5013 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 13:00:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-12-21 13:00:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 732. [2021-12-21 13:00:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 583 states have (on average 1.5763293310463122) internal successors, (919), 590 states have internal predecessors, (919), 125 states have call successors, (125), 19 states have call predecessors, (125), 23 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2021-12-21 13:00:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1190 transitions. [2021-12-21 13:00:55,666 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1190 transitions. Word has length 136 [2021-12-21 13:00:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:55,666 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1190 transitions. [2021-12-21 13:00:55,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-21 13:00:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1190 transitions. [2021-12-21 13:00:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-21 13:00:55,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:55,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:55,691 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 13:00:55,891 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 13:00:55,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1216349846, now seen corresponding path program 1 times [2021-12-21 13:00:55,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:55,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572282986] [2021-12-21 13:00:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:55,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:00:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:00:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:00:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:00:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:00:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:00:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:00:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:00:55,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:55,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572282986] [2021-12-21 13:00:55,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572282986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:55,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:55,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:55,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739806486] [2021-12-21 13:00:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:55,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:55,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:55,976 INFO L87 Difference]: Start difference. First operand 732 states and 1190 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:57,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:57,043 INFO L93 Difference]: Finished difference Result 1892 states and 3139 transitions. [2021-12-21 13:00:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2021-12-21 13:00:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:57,048 INFO L225 Difference]: With dead ends: 1892 [2021-12-21 13:00:57,049 INFO L226 Difference]: Without dead ends: 1238 [2021-12-21 13:00:57,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:57,051 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1152 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:57,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 1372 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:00:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-12-21 13:00:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1057. [2021-12-21 13:00:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 844 states have (on average 1.5924170616113744) internal successors, (1344), 851 states have internal predecessors, (1344), 189 states have call successors, (189), 19 states have call predecessors, (189), 23 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2021-12-21 13:00:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1753 transitions. [2021-12-21 13:00:57,100 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1753 transitions. Word has length 139 [2021-12-21 13:00:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:57,101 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1753 transitions. [2021-12-21 13:00:57,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1753 transitions. [2021-12-21 13:00:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-21 13:00:57,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:57,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:57,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:00:57,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash -284867229, now seen corresponding path program 1 times [2021-12-21 13:00:57,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:57,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947440974] [2021-12-21 13:00:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:57,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:00:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:00:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:00:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:00:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:00:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:00:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 13:00:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:00:57,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:57,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947440974] [2021-12-21 13:00:57,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947440974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:57,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:57,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:57,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790410728] [2021-12-21 13:00:57,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:57,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:57,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:57,218 INFO L87 Difference]: Start difference. First operand 1057 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:58,275 INFO L93 Difference]: Finished difference Result 2697 states and 4523 transitions. [2021-12-21 13:00:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:58,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2021-12-21 13:00:58,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:58,282 INFO L225 Difference]: With dead ends: 2697 [2021-12-21 13:00:58,283 INFO L226 Difference]: Without dead ends: 1771 [2021-12-21 13:00:58,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:58,286 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1161 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:58,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1346 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:00:58,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2021-12-21 13:00:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1590. [2021-12-21 13:00:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1282 states have (on average 1.5990639625585024) internal successors, (2050), 1289 states have internal predecessors, (2050), 284 states have call successors, (284), 19 states have call predecessors, (284), 23 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2021-12-21 13:00:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2649 transitions. [2021-12-21 13:00:58,376 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2649 transitions. Word has length 140 [2021-12-21 13:00:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:58,376 INFO L470 AbstractCegarLoop]: Abstraction has 1590 states and 2649 transitions. [2021-12-21 13:00:58,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2649 transitions. [2021-12-21 13:00:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-21 13:00:58,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:58,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:58,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:00:58,384 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash -431747836, now seen corresponding path program 1 times [2021-12-21 13:00:58,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:58,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992420932] [2021-12-21 13:00:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:58,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:00:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:00:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:00:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:00:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:00:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:00:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:00:58,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:58,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992420932] [2021-12-21 13:00:58,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992420932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:58,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:58,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:58,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242708235] [2021-12-21 13:00:58,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:58,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:58,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:58,484 INFO L87 Difference]: Start difference. First operand 1590 states and 2649 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:59,582 INFO L93 Difference]: Finished difference Result 3904 states and 6609 transitions. [2021-12-21 13:00:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:00:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 141 [2021-12-21 13:00:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:59,592 INFO L225 Difference]: With dead ends: 3904 [2021-12-21 13:00:59,593 INFO L226 Difference]: Without dead ends: 2580 [2021-12-21 13:00:59,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:59,597 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1136 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:59,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 1368 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:00:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-12-21 13:00:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2399. [2021-12-21 13:00:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1968 states have (on average 1.6041666666666667) internal successors, (3157), 1975 states have internal predecessors, (3157), 407 states have call successors, (407), 19 states have call predecessors, (407), 23 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2021-12-21 13:00:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4018 transitions. [2021-12-21 13:00:59,730 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 4018 transitions. Word has length 141 [2021-12-21 13:00:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:59,730 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 4018 transitions. [2021-12-21 13:00:59,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:00:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 4018 transitions. [2021-12-21 13:00:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 13:00:59,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:59,742 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:59,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:00:59,742 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1081150108, now seen corresponding path program 1 times [2021-12-21 13:00:59,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:59,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983677505] [2021-12-21 13:00:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:59,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:00:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:00:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:00:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:00:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:00:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:00:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 13:00:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:00:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:00:59,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:59,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983677505] [2021-12-21 13:00:59,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983677505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:59,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:59,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:00:59,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350751362] [2021-12-21 13:00:59,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:59,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:00:59,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:00:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:00:59,845 INFO L87 Difference]: Start difference. First operand 2399 states and 4018 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:01,014 INFO L93 Difference]: Finished difference Result 5788 states and 9869 transitions. [2021-12-21 13:01:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 142 [2021-12-21 13:01:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:01,035 INFO L225 Difference]: With dead ends: 5788 [2021-12-21 13:01:01,036 INFO L226 Difference]: Without dead ends: 3874 [2021-12-21 13:01:01,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:01,042 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1145 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:01,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 1345 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:01:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2021-12-21 13:01:01,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3693. [2021-12-21 13:01:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3083 states have (on average 1.6072007784625364) internal successors, (4955), 3090 states have internal predecessors, (4955), 586 states have call successors, (586), 19 states have call predecessors, (586), 23 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2021-12-21 13:01:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6200 transitions. [2021-12-21 13:01:01,273 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6200 transitions. Word has length 142 [2021-12-21 13:01:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:01,274 INFO L470 AbstractCegarLoop]: Abstraction has 3693 states and 6200 transitions. [2021-12-21 13:01:01,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6200 transitions. [2021-12-21 13:01:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-21 13:01:01,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:01,286 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:01,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:01:01,286 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 132577312, now seen corresponding path program 1 times [2021-12-21 13:01:01,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:01,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072957212] [2021-12-21 13:01:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:01,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:01:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:01:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:01:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:01:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:01:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:01:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 13:01:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:01:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:01:01,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:01,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072957212] [2021-12-21 13:01:01,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072957212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:01,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:01,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:01,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051024794] [2021-12-21 13:01:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:01,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:01,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:01,362 INFO L87 Difference]: Start difference. First operand 3693 states and 6200 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:02,522 INFO L93 Difference]: Finished difference Result 8891 states and 15233 transitions. [2021-12-21 13:01:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 143 [2021-12-21 13:01:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:02,543 INFO L225 Difference]: With dead ends: 8891 [2021-12-21 13:01:02,543 INFO L226 Difference]: Without dead ends: 6015 [2021-12-21 13:01:02,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:02,550 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1158 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:02,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1389 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:01:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2021-12-21 13:01:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 5834. [2021-12-21 13:01:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 4848 states have (on average 1.6008663366336633) internal successors, (7761), 4855 states have internal predecessors, (7761), 962 states have call successors, (962), 19 states have call predecessors, (962), 23 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2021-12-21 13:01:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 9802 transitions. [2021-12-21 13:01:02,861 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 9802 transitions. Word has length 143 [2021-12-21 13:01:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:02,861 INFO L470 AbstractCegarLoop]: Abstraction has 5834 states and 9802 transitions. [2021-12-21 13:01:02,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 9802 transitions. [2021-12-21 13:01:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 13:01:02,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:02,877 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:02,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:01:02,878 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1732044216, now seen corresponding path program 1 times [2021-12-21 13:01:02,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:02,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122509615] [2021-12-21 13:01:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:02,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:01:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:01:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:01:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:01:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:01:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:01:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 13:01:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:01:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:01:02,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122509615] [2021-12-21 13:01:02,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122509615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:02,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:02,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:02,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194800883] [2021-12-21 13:01:02,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:02,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:02,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:02,963 INFO L87 Difference]: Start difference. First operand 5834 states and 9802 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:04,317 INFO L93 Difference]: Finished difference Result 14508 states and 24846 transitions. [2021-12-21 13:01:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:04,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 144 [2021-12-21 13:01:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:04,351 INFO L225 Difference]: With dead ends: 14508 [2021-12-21 13:01:04,351 INFO L226 Difference]: Without dead ends: 9893 [2021-12-21 13:01:04,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:04,365 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1165 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:04,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 1336 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:01:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2021-12-21 13:01:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 9712. [2021-12-21 13:01:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 8120 states have (on average 1.5985221674876848) internal successors, (12980), 8127 states have internal predecessors, (12980), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 23 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2021-12-21 13:01:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 16311 transitions. [2021-12-21 13:01:04,914 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 16311 transitions. Word has length 144 [2021-12-21 13:01:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:04,914 INFO L470 AbstractCegarLoop]: Abstraction has 9712 states and 16311 transitions. [2021-12-21 13:01:04,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 16311 transitions. [2021-12-21 13:01:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-21 13:01:04,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:04,940 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:04,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:01:04,940 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash -934674194, now seen corresponding path program 1 times [2021-12-21 13:01:04,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:04,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758568375] [2021-12-21 13:01:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:04,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:01:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:01:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:01:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:01:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:01:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:01:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 13:01:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:01:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:01:05,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:05,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758568375] [2021-12-21 13:01:05,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758568375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:05,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:05,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:05,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976888172] [2021-12-21 13:01:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:05,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:05,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:05,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:05,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:05,029 INFO L87 Difference]: Start difference. First operand 9712 states and 16311 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:06,620 INFO L93 Difference]: Finished difference Result 25217 states and 43127 transitions. [2021-12-21 13:01:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:06,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 145 [2021-12-21 13:01:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:06,682 INFO L225 Difference]: With dead ends: 25217 [2021-12-21 13:01:06,682 INFO L226 Difference]: Without dead ends: 17206 [2021-12-21 13:01:06,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:06,708 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1160 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:06,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 1352 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:01:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17206 states. [2021-12-21 13:01:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17206 to 17025. [2021-12-21 13:01:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17025 states, 14230 states have (on average 1.5900210822206606) internal successors, (22626), 14237 states have internal predecessors, (22626), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 23 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2021-12-21 13:01:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17025 states to 17025 states and 28507 transitions. [2021-12-21 13:01:07,633 INFO L78 Accepts]: Start accepts. Automaton has 17025 states and 28507 transitions. Word has length 145 [2021-12-21 13:01:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:07,633 INFO L470 AbstractCegarLoop]: Abstraction has 17025 states and 28507 transitions. [2021-12-21 13:01:07,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:07,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17025 states and 28507 transitions. [2021-12-21 13:01:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 13:01:07,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:07,668 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:07,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:01:07,668 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash 721666921, now seen corresponding path program 1 times [2021-12-21 13:01:07,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:07,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005863989] [2021-12-21 13:01:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:07,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:01:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:01:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:01:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:01:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:01:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 13:01:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 13:01:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:01:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:01:07,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005863989] [2021-12-21 13:01:07,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005863989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:07,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:07,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:07,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834783839] [2021-12-21 13:01:07,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:07,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:07,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:07,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:07,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:07,758 INFO L87 Difference]: Start difference. First operand 17025 states and 28507 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:09,965 INFO L93 Difference]: Finished difference Result 45193 states and 77140 transitions. [2021-12-21 13:01:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 146 [2021-12-21 13:01:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:10,069 INFO L225 Difference]: With dead ends: 45193 [2021-12-21 13:01:10,070 INFO L226 Difference]: Without dead ends: 30546 [2021-12-21 13:01:10,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:10,108 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 1116 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:10,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 1374 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:01:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30546 states. [2021-12-21 13:01:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30546 to 30365. [2021-12-21 13:01:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30365 states, 25531 states have (on average 1.585875993889781) internal successors, (40489), 25538 states have internal predecessors, (40489), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 23 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2021-12-21 13:01:11,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30365 states to 30365 states and 50722 transitions. [2021-12-21 13:01:11,738 INFO L78 Accepts]: Start accepts. Automaton has 30365 states and 50722 transitions. Word has length 146 [2021-12-21 13:01:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:11,738 INFO L470 AbstractCegarLoop]: Abstraction has 30365 states and 50722 transitions. [2021-12-21 13:01:11,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 30365 states and 50722 transitions. [2021-12-21 13:01:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 13:01:11,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:11,783 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:11,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:01:11,783 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash -164120016, now seen corresponding path program 1 times [2021-12-21 13:01:11,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:11,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311612294] [2021-12-21 13:01:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:11,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:01:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:01:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:01:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:01:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:01:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:01:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:01:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:01:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:01:11,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:11,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311612294] [2021-12-21 13:01:11,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311612294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:11,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:11,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:11,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169549806] [2021-12-21 13:01:11,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:11,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:11,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:11,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:11,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:11,877 INFO L87 Difference]: Start difference. First operand 30365 states and 50722 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:15,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:15,176 INFO L93 Difference]: Finished difference Result 82930 states and 140664 transitions. [2021-12-21 13:01:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:15,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2021-12-21 13:01:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:15,371 INFO L225 Difference]: With dead ends: 82930 [2021-12-21 13:01:15,372 INFO L226 Difference]: Without dead ends: 55755 [2021-12-21 13:01:15,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:15,436 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 1146 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:15,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 1367 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:01:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55755 states. [2021-12-21 13:01:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55755 to 55574. [2021-12-21 13:01:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55574 states, 47025 states have (on average 1.5804359383306752) internal successors, (74320), 47032 states have internal predecessors, (74320), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 23 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2021-12-21 13:01:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55574 states to 55574 states and 92515 transitions. [2021-12-21 13:01:18,552 INFO L78 Accepts]: Start accepts. Automaton has 55574 states and 92515 transitions. Word has length 147 [2021-12-21 13:01:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:18,553 INFO L470 AbstractCegarLoop]: Abstraction has 55574 states and 92515 transitions. [2021-12-21 13:01:18,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 55574 states and 92515 transitions. [2021-12-21 13:01:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-21 13:01:18,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:18,606 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 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 13:01:18,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:01:18,606 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2051460439, now seen corresponding path program 1 times [2021-12-21 13:01:18,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:18,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287056628] [2021-12-21 13:01:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:18,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:01:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:01:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:01:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:01:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:01:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 13:01:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 13:01:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:01:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 13:01:18,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:18,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287056628] [2021-12-21 13:01:18,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287056628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:18,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:18,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:18,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092020219] [2021-12-21 13:01:18,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:18,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:18,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:18,700 INFO L87 Difference]: Start difference. First operand 55574 states and 92515 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:23,553 INFO L93 Difference]: Finished difference Result 103986 states and 176650 transitions. [2021-12-21 13:01:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:23,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 148 [2021-12-21 13:01:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:23,947 INFO L225 Difference]: With dead ends: 103986 [2021-12-21 13:01:23,948 INFO L226 Difference]: Without dead ends: 103829 [2021-12-21 13:01:23,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:24,002 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 1130 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:24,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 1372 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:01:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103829 states. [2021-12-21 13:01:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103829 to 103648. [2021-12-21 13:01:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103648 states, 88300 states have (on average 1.5736240090600226) internal successors, (138951), 88307 states have internal predecessors, (138951), 15324 states have call successors, (15324), 19 states have call predecessors, (15324), 23 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2021-12-21 13:01:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103648 states to 103648 states and 171790 transitions. [2021-12-21 13:01:29,370 INFO L78 Accepts]: Start accepts. Automaton has 103648 states and 171790 transitions. Word has length 148 [2021-12-21 13:01:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:29,371 INFO L470 AbstractCegarLoop]: Abstraction has 103648 states and 171790 transitions. [2021-12-21 13:01:29,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:01:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 103648 states and 171790 transitions. [2021-12-21 13:01:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 13:01:29,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:29,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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, 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 13:01:29,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:01:29,434 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:29,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash 953497743, now seen corresponding path program 1 times [2021-12-21 13:01:29,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:29,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346947042] [2021-12-21 13:01:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:29,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:01:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:01:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:01:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:01:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:01:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 13:01:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 13:01:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:01:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-21 13:01:29,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:29,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346947042] [2021-12-21 13:01:29,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346947042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:01:29,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183744759] [2021-12-21 13:01:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:29,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:01:29,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:01:29,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:01:29,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 13:01:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:29,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 13:01:29,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:01:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-21 13:01:30,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:01:30,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183744759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:30,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:01:30,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2021-12-21 13:01:30,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250641722] [2021-12-21 13:01:30,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:30,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:01:30,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:01:30,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-12-21 13:01:30,384 INFO L87 Difference]: Start difference. First operand 103648 states and 171790 transitions. Second operand has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-21 13:01:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:39,822 INFO L93 Difference]: Finished difference Result 206668 states and 348018 transitions. [2021-12-21 13:01:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:01:39,822 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 149 [2021-12-21 13:01:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted.