./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY --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 e2402328b10acba07d45e1b6bd18216e1645c73446d4739f1dc37852ed64162e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:25:45,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:25:45,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:25:45,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:25:45,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:25:45,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:25:45,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:25:45,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:25:45,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:25:45,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:25:45,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:25:45,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:25:45,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:25:45,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:25:45,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:25:45,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:25:45,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:25:45,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:25:45,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:25:45,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:25:45,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:25:45,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:25:45,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:25:45,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:25:45,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:25:45,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:25:45,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:25:45,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:25:45,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:25:45,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:25:45,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:25:45,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:25:45,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:25:45,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:25:45,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:25:45,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:25:45,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:25:45,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:25:45,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:25:45,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:25:45,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:25:45,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:25:45,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:25:45,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:25:45,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:25:45,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:25:45,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:25:45,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:25:45,888 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:25:45,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:25:45,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:25:45,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:25:45,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:25:45,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:25:45,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:25:45,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:25:45,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:25:45,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:25:45,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:25:45,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:25:45,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:25:45,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:25:45,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:25:45,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:25:45,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:25:45,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:25:45,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:25:45,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:25:45,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:25:45,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:25:45,893 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:25:45,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:25:45,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:25:45,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:25:45,895 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2402328b10acba07d45e1b6bd18216e1645c73446d4739f1dc37852ed64162e [2021-11-07 07:25:46,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:25:46,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:25:46,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:25:46,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:25:46,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:25:46,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/product-lines/email_spec9_product29.cil.c [2021-11-07 07:25:46,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/data/b4788affc/e5456767dc064d0eafd30a1843ac2291/FLAG65d4c8a5b [2021-11-07 07:25:46,838 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:25:46,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/sv-benchmarks/c/product-lines/email_spec9_product29.cil.c [2021-11-07 07:25:46,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/data/b4788affc/e5456767dc064d0eafd30a1843ac2291/FLAG65d4c8a5b [2021-11-07 07:25:47,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/data/b4788affc/e5456767dc064d0eafd30a1843ac2291 [2021-11-07 07:25:47,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:25:47,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:25:47,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:25:47,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:25:47,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:25:47,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:47,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ec466f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47, skipping insertion in model container [2021-11-07 07:25:47,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:47,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:25:47,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:25:47,864 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/sv-benchmarks/c/product-lines/email_spec9_product29.cil.c[65089,65102] [2021-11-07 07:25:47,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:25:47,877 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:25:47,960 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/sv-benchmarks/c/product-lines/email_spec9_product29.cil.c[65089,65102] [2021-11-07 07:25:47,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:25:47,998 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:25:47,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47 WrapperNode [2021-11-07 07:25:47,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:25:48,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:25:48,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:25:48,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:25:48,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:25:48,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:25:48,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:25:48,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:25:48,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:25:48,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:25:48,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:25:48,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:25:48,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (1/1) ... [2021-11-07 07:25:48,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:25:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:48,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:25:48,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:25:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 07:25:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:25:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:25:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:25:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:25:51,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:25:51,188 INFO L299 CfgBuilder]: Removed 617 assume(true) statements. [2021-11-07 07:25:51,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:25:51 BoogieIcfgContainer [2021-11-07 07:25:51,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:25:51,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:25:51,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:25:51,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:25:51,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:25:47" (1/3) ... [2021-11-07 07:25:51,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9c7df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:25:51, skipping insertion in model container [2021-11-07 07:25:51,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:47" (2/3) ... [2021-11-07 07:25:51,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9c7df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:25:51, skipping insertion in model container [2021-11-07 07:25:51,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:25:51" (3/3) ... [2021-11-07 07:25:51,203 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product29.cil.c [2021-11-07 07:25:51,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:25:51,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 07:25:51,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:25:51,270 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:25:51,270 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 07:25:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 1004 states, 997 states have (on average 1.7582748244734203) internal successors, (1753), 1003 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 07:25:51,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:51,352 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:51,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1057271424, now seen corresponding path program 1 times [2021-11-07 07:25:51,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:51,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548762298] [2021-11-07 07:25:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:51,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:51,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:51,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548762298] [2021-11-07 07:25:51,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548762298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:51,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:51,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:51,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213692688] [2021-11-07 07:25:51,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:51,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:51,870 INFO L87 Difference]: Start difference. First operand has 1004 states, 997 states have (on average 1.7582748244734203) internal successors, (1753), 1003 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:52,104 INFO L93 Difference]: Finished difference Result 2977 states and 5201 transitions. [2021-11-07 07:25:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 07:25:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:52,138 INFO L225 Difference]: With dead ends: 2977 [2021-11-07 07:25:52,139 INFO L226 Difference]: Without dead ends: 1716 [2021-11-07 07:25:52,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-11-07 07:25:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 867. [2021-11-07 07:25:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 861 states have (on average 1.751451800232288) internal successors, (1508), 866 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1508 transitions. [2021-11-07 07:25:52,292 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1508 transitions. Word has length 48 [2021-11-07 07:25:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:52,294 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1508 transitions. [2021-11-07 07:25:52,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1508 transitions. [2021-11-07 07:25:52,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 07:25:52,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:52,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:52,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:25:52,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:52,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash 421357907, now seen corresponding path program 1 times [2021-11-07 07:25:52,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:52,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217795930] [2021-11-07 07:25:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:52,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:52,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:52,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217795930] [2021-11-07 07:25:52,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217795930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:52,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:52,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:25:52,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634375711] [2021-11-07 07:25:52,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:25:52,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:52,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:25:52,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:52,488 INFO L87 Difference]: Start difference. First operand 867 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:52,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:52,748 INFO L93 Difference]: Finished difference Result 2550 states and 4440 transitions. [2021-11-07 07:25:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:25:52,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 07:25:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:52,763 INFO L225 Difference]: With dead ends: 2550 [2021-11-07 07:25:52,763 INFO L226 Difference]: Without dead ends: 1702 [2021-11-07 07:25:52,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:25:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-11-07 07:25:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 867. [2021-11-07 07:25:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 861 states have (on average 1.7502903600464577) internal successors, (1507), 866 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1507 transitions. [2021-11-07 07:25:52,811 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1507 transitions. Word has length 50 [2021-11-07 07:25:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:52,812 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1507 transitions. [2021-11-07 07:25:52,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1507 transitions. [2021-11-07 07:25:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 07:25:52,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:52,817 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:52,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:25:52,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1988921504, now seen corresponding path program 1 times [2021-11-07 07:25:52,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:52,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772253991] [2021-11-07 07:25:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:52,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:52,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:52,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772253991] [2021-11-07 07:25:52,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772253991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:52,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:52,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:52,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391376139] [2021-11-07 07:25:52,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:52,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:52,939 INFO L87 Difference]: Start difference. First operand 867 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:52,994 INFO L93 Difference]: Finished difference Result 1716 states and 2988 transitions. [2021-11-07 07:25:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:52,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 07:25:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:53,001 INFO L225 Difference]: With dead ends: 1716 [2021-11-07 07:25:53,001 INFO L226 Difference]: Without dead ends: 872 [2021-11-07 07:25:53,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-07 07:25:53,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 867. [2021-11-07 07:25:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 861 states have (on average 1.7468060394889664) internal successors, (1504), 866 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1504 transitions. [2021-11-07 07:25:53,038 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1504 transitions. Word has length 51 [2021-11-07 07:25:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:53,038 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1504 transitions. [2021-11-07 07:25:53,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1504 transitions. [2021-11-07 07:25:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 07:25:53,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:53,041 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:53,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:25:53,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1645807109, now seen corresponding path program 1 times [2021-11-07 07:25:53,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:53,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164471328] [2021-11-07 07:25:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:53,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:53,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:53,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164471328] [2021-11-07 07:25:53,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164471328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:53,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:53,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:25:53,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241497255] [2021-11-07 07:25:53,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:25:53,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:25:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:53,120 INFO L87 Difference]: Start difference. First operand 867 states and 1504 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:53,316 INFO L93 Difference]: Finished difference Result 2540 states and 4420 transitions. [2021-11-07 07:25:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:25:53,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 07:25:53,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:53,329 INFO L225 Difference]: With dead ends: 2540 [2021-11-07 07:25:53,329 INFO L226 Difference]: Without dead ends: 1700 [2021-11-07 07:25:53,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:25:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-11-07 07:25:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 867. [2021-11-07 07:25:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 861 states have (on average 1.745644599303136) internal successors, (1503), 866 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1503 transitions. [2021-11-07 07:25:53,387 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1503 transitions. Word has length 53 [2021-11-07 07:25:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:53,389 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1503 transitions. [2021-11-07 07:25:53,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1503 transitions. [2021-11-07 07:25:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 07:25:53,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:53,393 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:53,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:25:53,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:53,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:53,395 INFO L85 PathProgramCache]: Analyzing trace with hash -315860002, now seen corresponding path program 1 times [2021-11-07 07:25:53,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:53,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350067627] [2021-11-07 07:25:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:53,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:53,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:53,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350067627] [2021-11-07 07:25:53,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350067627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:53,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:53,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:25:53,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128081617] [2021-11-07 07:25:53,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:25:53,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:53,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:25:53,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:53,533 INFO L87 Difference]: Start difference. First operand 867 states and 1503 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:53,767 INFO L93 Difference]: Finished difference Result 2545 states and 4424 transitions. [2021-11-07 07:25:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:25:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 07:25:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:53,778 INFO L225 Difference]: With dead ends: 2545 [2021-11-07 07:25:53,779 INFO L226 Difference]: Without dead ends: 1705 [2021-11-07 07:25:53,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:25:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-11-07 07:25:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 867. [2021-11-07 07:25:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 861 states have (on average 1.7444831591173056) internal successors, (1502), 866 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1502 transitions. [2021-11-07 07:25:53,836 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1502 transitions. Word has length 54 [2021-11-07 07:25:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:53,837 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1502 transitions. [2021-11-07 07:25:53,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1502 transitions. [2021-11-07 07:25:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 07:25:53,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:53,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:53,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:25:53,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1204679946, now seen corresponding path program 1 times [2021-11-07 07:25:53,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:53,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613106377] [2021-11-07 07:25:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:53,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:53,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:53,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613106377] [2021-11-07 07:25:53,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613106377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:53,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:53,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:53,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78839732] [2021-11-07 07:25:53,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:53,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:53,931 INFO L87 Difference]: Start difference. First operand 867 states and 1502 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:53,985 INFO L93 Difference]: Finished difference Result 1457 states and 2505 transitions. [2021-11-07 07:25:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:53,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 07:25:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:53,997 INFO L225 Difference]: With dead ends: 1457 [2021-11-07 07:25:53,997 INFO L226 Difference]: Without dead ends: 870 [2021-11-07 07:25:53,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:54,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-07 07:25:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 869. [2021-11-07 07:25:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 863 states have (on average 1.742757821552723) internal successors, (1504), 868 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1504 transitions. [2021-11-07 07:25:54,055 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1504 transitions. Word has length 55 [2021-11-07 07:25:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:54,055 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1504 transitions. [2021-11-07 07:25:54,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1504 transitions. [2021-11-07 07:25:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 07:25:54,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:54,057 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:54,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:25:54,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:54,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2033811980, now seen corresponding path program 1 times [2021-11-07 07:25:54,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:54,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5964970] [2021-11-07 07:25:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:54,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:54,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:54,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5964970] [2021-11-07 07:25:54,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5964970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:54,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:54,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:54,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331990963] [2021-11-07 07:25:54,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:54,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:54,139 INFO L87 Difference]: Start difference. First operand 869 states and 1504 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:54,239 INFO L93 Difference]: Finished difference Result 2493 states and 4336 transitions. [2021-11-07 07:25:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:54,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 07:25:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:54,250 INFO L225 Difference]: With dead ends: 2493 [2021-11-07 07:25:54,250 INFO L226 Difference]: Without dead ends: 1655 [2021-11-07 07:25:54,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-11-07 07:25:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1068. [2021-11-07 07:25:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1062 states have (on average 1.7627118644067796) internal successors, (1872), 1067 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1872 transitions. [2021-11-07 07:25:54,354 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1872 transitions. Word has length 61 [2021-11-07 07:25:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:54,357 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1872 transitions. [2021-11-07 07:25:54,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1872 transitions. [2021-11-07 07:25:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:25:54,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:54,359 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:54,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:25:54,360 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:54,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1930298771, now seen corresponding path program 1 times [2021-11-07 07:25:54,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:54,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139860306] [2021-11-07 07:25:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:54,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:54,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:54,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139860306] [2021-11-07 07:25:54,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139860306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:54,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310372686] [2021-11-07 07:25:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:54,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:54,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:54,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:54,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:25:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:54,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:25:54,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:25:54,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310372686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:54,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:25:54,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 07:25:54,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385065378] [2021-11-07 07:25:54,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:54,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:54,993 INFO L87 Difference]: Start difference. First operand 1068 states and 1872 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:55,115 INFO L93 Difference]: Finished difference Result 1557 states and 2701 transitions. [2021-11-07 07:25:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-07 07:25:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:55,122 INFO L225 Difference]: With dead ends: 1557 [2021-11-07 07:25:55,122 INFO L226 Difference]: Without dead ends: 1070 [2021-11-07 07:25:55,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-07 07:25:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1056. [2021-11-07 07:25:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1052 states have (on average 1.7623574144486691) internal successors, (1854), 1055 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1854 transitions. [2021-11-07 07:25:55,190 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1854 transitions. Word has length 62 [2021-11-07 07:25:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:55,191 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 1854 transitions. [2021-11-07 07:25:55,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1854 transitions. [2021-11-07 07:25:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 07:25:55,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:55,198 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:55,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:55,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 07:25:55,413 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1823258317, now seen corresponding path program 1 times [2021-11-07 07:25:55,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:55,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183908464] [2021-11-07 07:25:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:55,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:55,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:55,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183908464] [2021-11-07 07:25:55,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183908464] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:55,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962407412] [2021-11-07 07:25:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:55,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:55,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:55,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:25:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:55,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:25:55,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:56,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962407412] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:56,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:56,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-07 07:25:56,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348361610] [2021-11-07 07:25:56,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:25:56,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:25:56,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:56,235 INFO L87 Difference]: Start difference. First operand 1056 states and 1854 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:56,379 INFO L93 Difference]: Finished difference Result 2461 states and 4285 transitions. [2021-11-07 07:25:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:25:56,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-07 07:25:56,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:56,392 INFO L225 Difference]: With dead ends: 2461 [2021-11-07 07:25:56,393 INFO L226 Difference]: Without dead ends: 1886 [2021-11-07 07:25:56,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-11-07 07:25:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1309. [2021-11-07 07:25:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1305 states have (on average 1.7770114942528736) internal successors, (2319), 1308 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2319 transitions. [2021-11-07 07:25:56,496 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2319 transitions. Word has length 102 [2021-11-07 07:25:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:56,497 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 2319 transitions. [2021-11-07 07:25:56,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2319 transitions. [2021-11-07 07:25:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 07:25:56,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:56,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:56,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:56,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae34c2e-5446-41ed-8ef6-b787c01cc9b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:56,729 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1452555558, now seen corresponding path program 1 times [2021-11-07 07:25:56,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:56,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803134631] [2021-11-07 07:25:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:56,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:56,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:56,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803134631] [2021-11-07 07:25:56,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803134631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:56,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:56,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431630050] [2021-11-07 07:25:56,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:56,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:56,811 INFO L87 Difference]: Start difference. First operand 1309 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:56,946 INFO L93 Difference]: Finished difference Result 3554 states and 6306 transitions. [2021-11-07 07:25:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:56,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 07:25:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:56,962 INFO L225 Difference]: With dead ends: 3554 [2021-11-07 07:25:56,962 INFO L226 Difference]: Without dead ends: 2334 [2021-11-07 07:25:56,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-11-07 07:25:57,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 1759. [2021-11-07 07:25:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1755 states have (on average 1.7931623931623932) internal successors, (3147), 1758 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 3147 transitions. [2021-11-07 07:25:57,084 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 3147 transitions. Word has length 108 [2021-11-07 07:25:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:57,084 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 3147 transitions. [2021-11-07 07:25:57,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 3147 transitions. [2021-11-07 07:25:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 07:25:57,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:57,090 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:57,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 07:25:57,091 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:57,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1718703350, now seen corresponding path program 2 times [2021-11-07 07:25:57,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:57,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557363269] [2021-11-07 07:25:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:57,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:57,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:57,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557363269] [2021-11-07 07:25:57,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557363269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:57,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:57,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:57,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164364669] [2021-11-07 07:25:57,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:57,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:57,182 INFO L87 Difference]: Start difference. First operand 1759 states and 3147 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:57,319 INFO L93 Difference]: Finished difference Result 3807 states and 6769 transitions. [2021-11-07 07:25:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:57,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 07:25:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:57,334 INFO L225 Difference]: With dead ends: 3807 [2021-11-07 07:25:57,334 INFO L226 Difference]: Without dead ends: 2334 [2021-11-07 07:25:57,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-11-07 07:25:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 1759. [2021-11-07 07:25:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1755 states have (on average 1.792022792022792) internal successors, (3145), 1758 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 3145 transitions. [2021-11-07 07:25:57,454 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 3145 transitions. Word has length 109 [2021-11-07 07:25:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:57,454 INFO L470 AbstractCegarLoop]: Abstraction has 1759 states and 3145 transitions. [2021-11-07 07:25:57,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 3145 transitions. [2021-11-07 07:25:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 07:25:57,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:57,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:57,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 07:25:57,461 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 22860533, now seen corresponding path program 1 times [2021-11-07 07:25:57,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:57,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113076361] [2021-11-07 07:25:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:57,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:57,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:57,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113076361] [2021-11-07 07:25:57,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113076361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:57,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:57,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:57,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942334830] [2021-11-07 07:25:57,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:57,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:57,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:57,535 INFO L87 Difference]: Start difference. First operand 1759 states and 3145 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:57,700 INFO L93 Difference]: Finished difference Result 4876 states and 8739 transitions. [2021-11-07 07:25:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 07:25:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:57,720 INFO L225 Difference]: With dead ends: 4876 [2021-11-07 07:25:57,720 INFO L226 Difference]: Without dead ends: 3214 [2021-11-07 07:25:57,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2021-11-07 07:25:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 2639. [2021-11-07 07:25:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2635 states have (on average 1.8079696394686906) internal successors, (4764), 2638 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 4764 transitions. [2021-11-07 07:25:57,912 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 4764 transitions. Word has length 109 [2021-11-07 07:25:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:57,912 INFO L470 AbstractCegarLoop]: Abstraction has 2639 states and 4764 transitions. [2021-11-07 07:25:57,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 4764 transitions. [2021-11-07 07:25:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 07:25:57,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:57,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:57,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 07:25:57,921 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2040766232, now seen corresponding path program 1 times [2021-11-07 07:25:57,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:57,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744054387] [2021-11-07 07:25:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:57,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:57,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:57,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744054387] [2021-11-07 07:25:57,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744054387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:57,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:57,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:57,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090609247] [2021-11-07 07:25:57,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:57,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:57,993 INFO L87 Difference]: Start difference. First operand 2639 states and 4764 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:58,205 INFO L93 Difference]: Finished difference Result 7252 states and 13115 transitions. [2021-11-07 07:25:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:58,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 07:25:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:58,232 INFO L225 Difference]: With dead ends: 7252 [2021-11-07 07:25:58,232 INFO L226 Difference]: Without dead ends: 4744 [2021-11-07 07:25:58,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2021-11-07 07:25:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 4169. [2021-11-07 07:25:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 4165 states have (on average 1.8192076830732293) internal successors, (7577), 4168 states have internal predecessors, (7577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 7577 transitions. [2021-11-07 07:25:58,519 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 7577 transitions. Word has length 110 [2021-11-07 07:25:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:58,520 INFO L470 AbstractCegarLoop]: Abstraction has 4169 states and 7577 transitions. [2021-11-07 07:25:58,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 7577 transitions. [2021-11-07 07:25:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 07:25:58,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:58,532 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:58,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 07:25:58,532 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 255602182, now seen corresponding path program 1 times [2021-11-07 07:25:58,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:58,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914660017] [2021-11-07 07:25:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:58,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:58,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:58,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914660017] [2021-11-07 07:25:58,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914660017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:58,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:58,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:25:58,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920159491] [2021-11-07 07:25:58,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:25:58,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:25:58,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:58,602 INFO L87 Difference]: Start difference. First operand 4169 states and 7577 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:58,902 INFO L93 Difference]: Finished difference Result 11558 states and 21037 transitions. [2021-11-07 07:25:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:25:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-07 07:25:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:58,925 INFO L225 Difference]: With dead ends: 11558 [2021-11-07 07:25:58,925 INFO L226 Difference]: Without dead ends: 7554 [2021-11-07 07:25:58,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:25:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7554 states. [2021-11-07 07:25:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7554 to 6979. [2021-11-07 07:25:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6975 states have (on average 1.8262365591397849) internal successors, (12738), 6978 states have internal predecessors, (12738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 12738 transitions. [2021-11-07 07:25:59,425 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 12738 transitions. Word has length 111 [2021-11-07 07:25:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:59,426 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 12738 transitions. [2021-11-07 07:25:59,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 12738 transitions. [2021-11-07 07:25:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 07:25:59,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:59,447 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:59,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 07:25:59,447 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:25:59,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2119121846, now seen corresponding path program 1 times [2021-11-07 07:25:59,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:59,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871051460] [2021-11-07 07:25:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:59,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:25:59,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:59,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871051460] [2021-11-07 07:25:59,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871051460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:25:59,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:25:59,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:25:59,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760266890] [2021-11-07 07:25:59,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:25:59,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:59,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:25:59,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:25:59,545 INFO L87 Difference]: Start difference. First operand 6979 states and 12738 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:00,458 INFO L93 Difference]: Finished difference Result 20078 states and 36681 transitions. [2021-11-07 07:26:00,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:26:00,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 07:26:00,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:00,495 INFO L225 Difference]: With dead ends: 20078 [2021-11-07 07:26:00,495 INFO L226 Difference]: Without dead ends: 13385 [2021-11-07 07:26:00,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:26:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2021-11-07 07:26:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 6979. [2021-11-07 07:26:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6975 states have (on average 1.819068100358423) internal successors, (12688), 6978 states have internal predecessors, (12688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 12688 transitions. [2021-11-07 07:26:00,996 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 12688 transitions. Word has length 112 [2021-11-07 07:26:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:00,997 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 12688 transitions. [2021-11-07 07:26:00,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 12688 transitions. [2021-11-07 07:26:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 07:26:01,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:01,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:01,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 07:26:01,016 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash -746604007, now seen corresponding path program 1 times [2021-11-07 07:26:01,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:01,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534358323] [2021-11-07 07:26:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:01,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:01,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:01,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534358323] [2021-11-07 07:26:01,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534358323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:01,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:01,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:26:01,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380916053] [2021-11-07 07:26:01,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:26:01,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:01,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:26:01,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:26:01,097 INFO L87 Difference]: Start difference. First operand 6979 states and 12688 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:01,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:01,731 INFO L93 Difference]: Finished difference Result 20446 states and 37215 transitions. [2021-11-07 07:26:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:26:01,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 07:26:01,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:01,767 INFO L225 Difference]: With dead ends: 20446 [2021-11-07 07:26:01,767 INFO L226 Difference]: Without dead ends: 13636 [2021-11-07 07:26:01,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:26:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13636 states. [2021-11-07 07:26:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13636 to 13061. [2021-11-07 07:26:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13061 states, 13057 states have (on average 1.8222409435551812) internal successors, (23793), 13060 states have internal predecessors, (23793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13061 states to 13061 states and 23793 transitions. [2021-11-07 07:26:02,540 INFO L78 Accepts]: Start accepts. Automaton has 13061 states and 23793 transitions. Word has length 112 [2021-11-07 07:26:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:02,541 INFO L470 AbstractCegarLoop]: Abstraction has 13061 states and 23793 transitions. [2021-11-07 07:26:02,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13061 states and 23793 transitions. [2021-11-07 07:26:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 07:26:02,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:02,578 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:02,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 07:26:02,578 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1149002821, now seen corresponding path program 1 times [2021-11-07 07:26:02,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:02,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775897242] [2021-11-07 07:26:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:02,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:02,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:02,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775897242] [2021-11-07 07:26:02,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775897242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:02,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:02,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 07:26:02,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971879921] [2021-11-07 07:26:02,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:26:02,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:26:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:26:02,685 INFO L87 Difference]: Start difference. First operand 13061 states and 23793 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:04,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:04,287 INFO L93 Difference]: Finished difference Result 27898 states and 50614 transitions. [2021-11-07 07:26:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:26:04,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 07:26:04,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:04,358 INFO L225 Difference]: With dead ends: 27898 [2021-11-07 07:26:04,358 INFO L226 Difference]: Without dead ends: 27341 [2021-11-07 07:26:04,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:26:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27341 states. [2021-11-07 07:26:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27341 to 25892. [2021-11-07 07:26:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25892 states, 25888 states have (on average 1.8230840543881335) internal successors, (47196), 25891 states have internal predecessors, (47196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25892 states to 25892 states and 47196 transitions. [2021-11-07 07:26:05,420 INFO L78 Accepts]: Start accepts. Automaton has 25892 states and 47196 transitions. Word has length 113 [2021-11-07 07:26:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:05,420 INFO L470 AbstractCegarLoop]: Abstraction has 25892 states and 47196 transitions. [2021-11-07 07:26:05,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 25892 states and 47196 transitions. [2021-11-07 07:26:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 07:26:05,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:05,469 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:05,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 07:26:05,469 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:05,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1931418696, now seen corresponding path program 1 times [2021-11-07 07:26:05,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:05,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805993205] [2021-11-07 07:26:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:05,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:05,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:05,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805993205] [2021-11-07 07:26:05,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805993205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:05,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:05,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:26:05,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726515166] [2021-11-07 07:26:05,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:26:05,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:26:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:26:05,533 INFO L87 Difference]: Start difference. First operand 25892 states and 47196 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:06,720 INFO L93 Difference]: Finished difference Result 50853 states and 92809 transitions. [2021-11-07 07:26:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:26:06,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 07:26:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:06,830 INFO L225 Difference]: With dead ends: 50853 [2021-11-07 07:26:06,830 INFO L226 Difference]: Without dead ends: 37802 [2021-11-07 07:26:06,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:26:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37802 states. [2021-11-07 07:26:07,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37802 to 25611. [2021-11-07 07:26:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25611 states, 25607 states have (on average 1.8238762838286406) internal successors, (46704), 25610 states have internal predecessors, (46704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25611 states to 25611 states and 46704 transitions. [2021-11-07 07:26:08,071 INFO L78 Accepts]: Start accepts. Automaton has 25611 states and 46704 transitions. Word has length 114 [2021-11-07 07:26:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:08,071 INFO L470 AbstractCegarLoop]: Abstraction has 25611 states and 46704 transitions. [2021-11-07 07:26:08,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 25611 states and 46704 transitions. [2021-11-07 07:26:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 07:26:08,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:08,099 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:08,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 07:26:08,099 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash -265756035, now seen corresponding path program 1 times [2021-11-07 07:26:08,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:08,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727395817] [2021-11-07 07:26:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:08,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:08,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:08,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727395817] [2021-11-07 07:26:08,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727395817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:08,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:26:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246314639] [2021-11-07 07:26:08,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:26:08,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:26:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:26:08,176 INFO L87 Difference]: Start difference. First operand 25611 states and 46704 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:09,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:09,273 INFO L93 Difference]: Finished difference Result 27188 states and 49393 transitions. [2021-11-07 07:26:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:26:09,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 07:26:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:09,342 INFO L225 Difference]: With dead ends: 27188 [2021-11-07 07:26:09,343 INFO L226 Difference]: Without dead ends: 26276 [2021-11-07 07:26:09,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:26:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26276 states. [2021-11-07 07:26:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26276 to 25605. [2021-11-07 07:26:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25605 states, 25601 states have (on average 1.82379594547088) internal successors, (46691), 25604 states have internal predecessors, (46691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25605 states to 25605 states and 46691 transitions. [2021-11-07 07:26:10,567 INFO L78 Accepts]: Start accepts. Automaton has 25605 states and 46691 transitions. Word has length 115 [2021-11-07 07:26:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:10,568 INFO L470 AbstractCegarLoop]: Abstraction has 25605 states and 46691 transitions. [2021-11-07 07:26:10,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 25605 states and 46691 transitions. [2021-11-07 07:26:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 07:26:10,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:10,600 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:10,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 07:26:10,600 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1648339919, now seen corresponding path program 1 times [2021-11-07 07:26:10,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:10,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867370512] [2021-11-07 07:26:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:10,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:10,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:10,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867370512] [2021-11-07 07:26:10,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867370512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:10,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:10,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:26:10,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088784365] [2021-11-07 07:26:10,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:26:10,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:10,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:26:10,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:26:10,723 INFO L87 Difference]: Start difference. First operand 25605 states and 46691 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:14,970 INFO L93 Difference]: Finished difference Result 56521 states and 102214 transitions. [2021-11-07 07:26:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 07:26:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-07 07:26:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:15,060 INFO L225 Difference]: With dead ends: 56521 [2021-11-07 07:26:15,061 INFO L226 Difference]: Without dead ends: 55727 [2021-11-07 07:26:15,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:26:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55727 states. [2021-11-07 07:26:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55727 to 50954. [2021-11-07 07:26:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50954 states, 50950 states have (on average 1.8242394504416095) internal successors, (92945), 50953 states have internal predecessors, (92945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50954 states to 50954 states and 92945 transitions. [2021-11-07 07:26:17,001 INFO L78 Accepts]: Start accepts. Automaton has 50954 states and 92945 transitions. Word has length 117 [2021-11-07 07:26:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:17,001 INFO L470 AbstractCegarLoop]: Abstraction has 50954 states and 92945 transitions. [2021-11-07 07:26:17,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 50954 states and 92945 transitions. [2021-11-07 07:26:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 07:26:17,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:17,068 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:17,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 07:26:17,068 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1914305239, now seen corresponding path program 1 times [2021-11-07 07:26:17,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:17,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93700046] [2021-11-07 07:26:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:17,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:17,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:17,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93700046] [2021-11-07 07:26:17,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93700046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:17,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:17,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:26:17,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747257996] [2021-11-07 07:26:17,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:26:17,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:17,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:26:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:26:17,135 INFO L87 Difference]: Start difference. First operand 50954 states and 92945 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:19,008 INFO L93 Difference]: Finished difference Result 52566 states and 95681 transitions. [2021-11-07 07:26:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:26:19,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-07 07:26:19,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:19,129 INFO L225 Difference]: With dead ends: 52566 [2021-11-07 07:26:19,130 INFO L226 Difference]: Without dead ends: 51650 [2021-11-07 07:26:19,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:26:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51650 states. [2021-11-07 07:26:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51650 to 50952. [2021-11-07 07:26:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50952 states, 50948 states have (on average 1.8241540394127345) internal successors, (92937), 50951 states have internal predecessors, (92937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50952 states to 50952 states and 92937 transitions. [2021-11-07 07:26:20,997 INFO L78 Accepts]: Start accepts. Automaton has 50952 states and 92937 transitions. Word has length 118 [2021-11-07 07:26:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:20,997 INFO L470 AbstractCegarLoop]: Abstraction has 50952 states and 92937 transitions. [2021-11-07 07:26:20,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 50952 states and 92937 transitions. [2021-11-07 07:26:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 07:26:21,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:21,059 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:21,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 07:26:21,059 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:21,060 INFO L85 PathProgramCache]: Analyzing trace with hash -369097163, now seen corresponding path program 1 times [2021-11-07 07:26:21,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:21,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76182778] [2021-11-07 07:26:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:21,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:21,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:21,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76182778] [2021-11-07 07:26:21,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76182778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:21,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:21,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:26:21,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004918394] [2021-11-07 07:26:21,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:26:21,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:26:21,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:26:21,147 INFO L87 Difference]: Start difference. First operand 50952 states and 92937 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:24,399 INFO L93 Difference]: Finished difference Result 103962 states and 189317 transitions. [2021-11-07 07:26:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:26:24,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-07 07:26:24,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:24,569 INFO L225 Difference]: With dead ends: 103962 [2021-11-07 07:26:24,569 INFO L226 Difference]: Without dead ends: 102623 [2021-11-07 07:26:24,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:26:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102623 states. [2021-11-07 07:26:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102623 to 101226. [2021-11-07 07:26:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101226 states, 101222 states have (on average 1.8247317776767897) internal successors, (184703), 101225 states have internal predecessors, (184703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101226 states to 101226 states and 184703 transitions. [2021-11-07 07:26:28,751 INFO L78 Accepts]: Start accepts. Automaton has 101226 states and 184703 transitions. Word has length 118 [2021-11-07 07:26:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:28,751 INFO L470 AbstractCegarLoop]: Abstraction has 101226 states and 184703 transitions. [2021-11-07 07:26:28,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 101226 states and 184703 transitions. [2021-11-07 07:26:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 07:26:28,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:28,839 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:28,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 07:26:28,839 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:28,840 INFO L85 PathProgramCache]: Analyzing trace with hash 588294619, now seen corresponding path program 1 times [2021-11-07 07:26:28,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:28,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637160636] [2021-11-07 07:26:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:28,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:28,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:28,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637160636] [2021-11-07 07:26:28,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637160636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:28,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:28,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 07:26:28,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370721077] [2021-11-07 07:26:28,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:26:28,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:26:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:26:28,928 INFO L87 Difference]: Start difference. First operand 101226 states and 184703 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:32,350 INFO L93 Difference]: Finished difference Result 103758 states and 189002 transitions. [2021-11-07 07:26:32,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:26:32,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-07 07:26:32,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:32,519 INFO L225 Difference]: With dead ends: 103758 [2021-11-07 07:26:32,519 INFO L226 Difference]: Without dead ends: 100625 [2021-11-07 07:26:32,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:26:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100625 states. [2021-11-07 07:26:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100625 to 100266. [2021-11-07 07:26:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100266 states, 100262 states have (on average 1.8256069098960723) internal successors, (183039), 100265 states have internal predecessors, (183039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100266 states to 100266 states and 183039 transitions. [2021-11-07 07:26:36,444 INFO L78 Accepts]: Start accepts. Automaton has 100266 states and 183039 transitions. Word has length 119 [2021-11-07 07:26:36,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:36,444 INFO L470 AbstractCegarLoop]: Abstraction has 100266 states and 183039 transitions. [2021-11-07 07:26:36,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 100266 states and 183039 transitions. [2021-11-07 07:26:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 07:26:36,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:36,520 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:26:36,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 07:26:36,521 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 07:26:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash -176201987, now seen corresponding path program 1 times [2021-11-07 07:26:36,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:36,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124877646] [2021-11-07 07:26:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:36,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:36,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:26:36,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:36,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124877646] [2021-11-07 07:26:36,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124877646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:26:36,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:26:36,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:26:36,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100888486] [2021-11-07 07:26:36,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:26:36,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:26:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:26:36,620 INFO L87 Difference]: Start difference. First operand 100266 states and 183039 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)