./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX --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 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:50:48,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:50:48,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:50:48,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:50:48,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:50:48,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:50:48,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:50:48,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:50:48,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:50:48,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:50:48,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:50:48,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:50:48,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:50:48,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:50:48,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:50:48,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:50:48,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:50:48,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:50:48,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:50:48,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:50:48,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:50:48,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:50:48,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:50:48,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:50:48,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:50:48,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:50:48,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:50:48,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:50:48,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:50:48,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:50:48,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:50:48,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:50:48,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:50:48,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:50:48,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:50:48,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:50:48,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:50:48,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:50:48,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:50:48,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:50:48,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:50:48,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:50:48,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:50:48,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:50:48,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:50:48,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:50:48,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:50:48,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:50:48,822 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:50:48,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:50:48,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:50:48,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:50:48,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:50:48,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:50:48,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:50:48,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:50:48,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:50:48,826 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:50:48,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:50:48,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:50:48,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:50:48,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:50:48,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:50:48,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:50:48,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:50:48,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:50:48,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:50:48,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:50:48,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:50:48,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:50:48,829 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:50:48,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:50:48,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:50:48,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:50:48,832 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_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 [2021-11-09 09:50:49,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:50:49,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:50:49,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:50:49,190 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:50:49,191 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:50:49,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-09 09:50:49,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/data/1ffdfaccb/cb0071f763e9422d8c2714b78ce036ae/FLAGa1d42bfc7 [2021-11-09 09:50:50,070 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:50:50,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-09 09:50:50,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/data/1ffdfaccb/cb0071f763e9422d8c2714b78ce036ae/FLAGa1d42bfc7 [2021-11-09 09:50:50,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/data/1ffdfaccb/cb0071f763e9422d8c2714b78ce036ae [2021-11-09 09:50:50,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:50:50,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:50:50,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:50:50,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:50:50,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:50:50,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:50:50" (1/1) ... [2021-11-09 09:50:50,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a006fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:50, skipping insertion in model container [2021-11-09 09:50:50,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:50:50" (1/1) ... [2021-11-09 09:50:50,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:50:50,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:50:50,784 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_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-09 09:50:51,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:50:51,145 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:50:51,216 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_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-09 09:50:51,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:50:51,423 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:50:51,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51 WrapperNode [2021-11-09 09:50:51,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:50:51,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:50:51,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:50:51,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:50:51,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:50:51,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:50:58,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:50:58,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:50:58,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:50:58,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:50:58,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:50:58,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:50:59,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:50:59,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:51:02,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:51:02,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:51:03,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:51:03,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:51:03,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:51:03,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:51:03,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:51:03,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (1/1) ... [2021-11-09 09:51:03,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:51:03,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:03,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:51:03,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:51:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-09 09:51:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:51:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:51:03,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:51:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:51:58,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:51:58,388 INFO L299 CfgBuilder]: Removed 37403 assume(true) statements. [2021-11-09 09:51:58,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:58 BoogieIcfgContainer [2021-11-09 09:51:58,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:51:58,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:51:58,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:51:58,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:51:58,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:50:50" (1/3) ... [2021-11-09 09:51:58,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ca057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:51:58, skipping insertion in model container [2021-11-09 09:51:58,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:50:51" (2/3) ... [2021-11-09 09:51:58,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ca057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:51:58, skipping insertion in model container [2021-11-09 09:51:58,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:51:58" (3/3) ... [2021-11-09 09:51:58,438 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_productSimulator.cil.c [2021-11-09 09:51:58,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:51:58,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 128 error locations. [2021-11-09 09:51:58,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:51:58,676 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 [2021-11-09 09:51:58,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 128 error locations. [2021-11-09 09:51:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 36116 states, 35987 states have (on average 1.6031066774112874) internal successors, (57691), 36115 states have internal predecessors, (57691), 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) [2021-11-09 09:51:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 09:51:59,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:59,262 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] [2021-11-09 09:51:59,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:51:59,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:59,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1844169582, now seen corresponding path program 1 times [2021-11-09 09:51:59,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:59,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982981546] [2021-11-09 09:51:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:59,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:51:59,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:59,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982981546] [2021-11-09 09:51:59,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982981546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:59,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:51:59,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:51:59,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520557164] [2021-11-09 09:51:59,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:51:59,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:51:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:51:59,909 INFO L87 Difference]: Start difference. First operand has 36116 states, 35987 states have (on average 1.6031066774112874) internal successors, (57691), 36115 states have internal predecessors, (57691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2021-11-09 09:52:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:01,575 INFO L93 Difference]: Finished difference Result 71897 states and 114770 transitions. [2021-11-09 09:52:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:52:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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 58 [2021-11-09 09:52:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:01,845 INFO L225 Difference]: With dead ends: 71897 [2021-11-09 09:52:01,845 INFO L226 Difference]: Without dead ends: 25936 [2021-11-09 09:52:01,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:52:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25936 states. [2021-11-09 09:52:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25936 to 25936. [2021-11-09 09:52:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25936 states, 25808 states have (on average 1.6033787972721636) internal successors, (41380), 25935 states have internal predecessors, (41380), 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) [2021-11-09 09:52:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25936 states to 25936 states and 41380 transitions. [2021-11-09 09:52:03,546 INFO L78 Accepts]: Start accepts. Automaton has 25936 states and 41380 transitions. Word has length 58 [2021-11-09 09:52:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:03,549 INFO L470 AbstractCegarLoop]: Abstraction has 25936 states and 41380 transitions. [2021-11-09 09:52:03,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2021-11-09 09:52:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 25936 states and 41380 transitions. [2021-11-09 09:52:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 09:52:03,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:03,560 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] [2021-11-09 09:52:03,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:52:03,561 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1829635949, now seen corresponding path program 1 times [2021-11-09 09:52:03,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:03,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342806770] [2021-11-09 09:52:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:03,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:03,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:03,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342806770] [2021-11-09 09:52:03,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342806770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:03,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:03,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:52:03,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476546532] [2021-11-09 09:52:03,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:52:03,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:52:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:52:03,847 INFO L87 Difference]: Start difference. First operand 25936 states and 41380 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-09 09:52:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:05,088 INFO L93 Difference]: Finished difference Result 51847 states and 82722 transitions. [2021-11-09 09:52:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:52:05,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2021-11-09 09:52:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:05,176 INFO L225 Difference]: With dead ends: 51847 [2021-11-09 09:52:05,176 INFO L226 Difference]: Without dead ends: 25936 [2021-11-09 09:52:05,595 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 [2021-11-09 09:52:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25936 states. [2021-11-09 09:52:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25936 to 25936. [2021-11-09 09:52:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25936 states, 25808 states have (on average 1.6031075635461873) internal successors, (41373), 25935 states have internal predecessors, (41373), 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) [2021-11-09 09:52:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25936 states to 25936 states and 41373 transitions. [2021-11-09 09:52:06,396 INFO L78 Accepts]: Start accepts. Automaton has 25936 states and 41373 transitions. Word has length 59 [2021-11-09 09:52:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:06,397 INFO L470 AbstractCegarLoop]: Abstraction has 25936 states and 41373 transitions. [2021-11-09 09:52:06,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2021-11-09 09:52:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25936 states and 41373 transitions. [2021-11-09 09:52:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:52:06,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:06,404 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] [2021-11-09 09:52:06,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:52:06,406 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1015319103, now seen corresponding path program 1 times [2021-11-09 09:52:06,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:06,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950715903] [2021-11-09 09:52:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:06,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:06,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:06,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950715903] [2021-11-09 09:52:06,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950715903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:06,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:06,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:52:06,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523109513] [2021-11-09 09:52:06,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:52:06,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:52:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:52:06,605 INFO L87 Difference]: Start difference. First operand 25936 states and 41373 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-09 09:52:09,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:09,201 INFO L93 Difference]: Finished difference Result 77708 states and 123967 transitions. [2021-11-09 09:52:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:52:09,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2021-11-09 09:52:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:09,392 INFO L225 Difference]: With dead ends: 77708 [2021-11-09 09:52:09,392 INFO L226 Difference]: Without dead ends: 51817 [2021-11-09 09:52:09,452 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 [2021-11-09 09:52:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51817 states. [2021-11-09 09:52:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51817 to 25934. [2021-11-09 09:52:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25934 states, 25806 states have (on average 1.6029218011315198) internal successors, (41365), 25933 states have internal predecessors, (41365), 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) [2021-11-09 09:52:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25934 states to 25934 states and 41365 transitions. [2021-11-09 09:52:11,121 INFO L78 Accepts]: Start accepts. Automaton has 25934 states and 41365 transitions. Word has length 64 [2021-11-09 09:52:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:11,122 INFO L470 AbstractCegarLoop]: Abstraction has 25934 states and 41365 transitions. [2021-11-09 09:52:11,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-09 09:52:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25934 states and 41365 transitions. [2021-11-09 09:52:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:52:11,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:11,128 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] [2021-11-09 09:52:11,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:52:11,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1539786519, now seen corresponding path program 1 times [2021-11-09 09:52:11,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:11,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120065553] [2021-11-09 09:52:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:11,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:11,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:11,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120065553] [2021-11-09 09:52:11,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120065553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:11,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:11,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:52:11,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149503021] [2021-11-09 09:52:11,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:52:11,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:52:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:52:11,269 INFO L87 Difference]: Start difference. First operand 25934 states and 41365 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2021-11-09 09:52:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:12,956 INFO L93 Difference]: Finished difference Result 51817 states and 82656 transitions. [2021-11-09 09:52:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:52:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2021-11-09 09:52:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:13,042 INFO L225 Difference]: With dead ends: 51817 [2021-11-09 09:52:13,042 INFO L226 Difference]: Without dead ends: 25940 [2021-11-09 09:52:13,081 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 [2021-11-09 09:52:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25940 states. [2021-11-09 09:52:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25940 to 25934. [2021-11-09 09:52:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25934 states, 25806 states have (on average 1.6026892970626987) internal successors, (41359), 25933 states have internal predecessors, (41359), 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) [2021-11-09 09:52:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25934 states to 25934 states and 41359 transitions. [2021-11-09 09:52:14,572 INFO L78 Accepts]: Start accepts. Automaton has 25934 states and 41359 transitions. Word has length 65 [2021-11-09 09:52:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:14,572 INFO L470 AbstractCegarLoop]: Abstraction has 25934 states and 41359 transitions. [2021-11-09 09:52:14,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2021-11-09 09:52:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 25934 states and 41359 transitions. [2021-11-09 09:52:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:52:14,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:14,580 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] [2021-11-09 09:52:14,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:52:14,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:14,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1603062428, now seen corresponding path program 1 times [2021-11-09 09:52:14,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:14,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950462377] [2021-11-09 09:52:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:14,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:14,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:14,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950462377] [2021-11-09 09:52:14,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950462377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:14,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:14,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:52:14,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455383260] [2021-11-09 09:52:14,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:52:14,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:52:14,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:52:14,721 INFO L87 Difference]: Start difference. First operand 25934 states and 41359 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-09 09:52:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:15,979 INFO L93 Difference]: Finished difference Result 51538 states and 82134 transitions. [2021-11-09 09:52:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:52:15,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-09 09:52:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:16,064 INFO L225 Difference]: With dead ends: 51538 [2021-11-09 09:52:16,064 INFO L226 Difference]: Without dead ends: 25937 [2021-11-09 09:52:16,100 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 [2021-11-09 09:52:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25937 states. [2021-11-09 09:52:17,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25937 to 25936. [2021-11-09 09:52:17,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25936 states, 25808 states have (on average 1.6026425914445133) internal successors, (41361), 25935 states have internal predecessors, (41361), 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) [2021-11-09 09:52:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25936 states to 25936 states and 41361 transitions. [2021-11-09 09:52:17,366 INFO L78 Accepts]: Start accepts. Automaton has 25936 states and 41361 transitions. Word has length 67 [2021-11-09 09:52:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:17,366 INFO L470 AbstractCegarLoop]: Abstraction has 25936 states and 41361 transitions. [2021-11-09 09:52:17,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-09 09:52:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 25936 states and 41361 transitions. [2021-11-09 09:52:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-09 09:52:17,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:17,372 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] [2021-11-09 09:52:17,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:52:17,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1287813130, now seen corresponding path program 1 times [2021-11-09 09:52:17,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:17,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851907218] [2021-11-09 09:52:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:17,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:17,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:17,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851907218] [2021-11-09 09:52:17,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851907218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:17,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556559335] [2021-11-09 09:52:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:17,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:17,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:17,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:17,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:52:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:17,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:52:17,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:18,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556559335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:18,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:52:18,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 09:52:18,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397546817] [2021-11-09 09:52:18,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:52:18,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:52:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:52:18,252 INFO L87 Difference]: Start difference. First operand 25936 states and 41361 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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) [2021-11-09 09:52:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:20,271 INFO L93 Difference]: Finished difference Result 77409 states and 123405 transitions. [2021-11-09 09:52:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:52:20,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 74 [2021-11-09 09:52:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:20,435 INFO L225 Difference]: With dead ends: 77409 [2021-11-09 09:52:20,435 INFO L226 Difference]: Without dead ends: 51808 [2021-11-09 09:52:20,501 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:52:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51808 states. [2021-11-09 09:52:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51808 to 26206. [2021-11-09 09:52:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26206 states, 26078 states have (on average 1.6052227931589846) internal successors, (41861), 26205 states have internal predecessors, (41861), 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) [2021-11-09 09:52:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26206 states to 26206 states and 41861 transitions. [2021-11-09 09:52:21,956 INFO L78 Accepts]: Start accepts. Automaton has 26206 states and 41861 transitions. Word has length 74 [2021-11-09 09:52:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:21,957 INFO L470 AbstractCegarLoop]: Abstraction has 26206 states and 41861 transitions. [2021-11-09 09:52:21,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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) [2021-11-09 09:52:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 26206 states and 41861 transitions. [2021-11-09 09:52:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:52:21,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:21,963 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] [2021-11-09 09:52:22,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:22,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d7738d6-eb8f-4c39-9ff4-f0e963cca178/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:22,178 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:22,178 INFO L85 PathProgramCache]: Analyzing trace with hash 795493167, now seen corresponding path program 1 times [2021-11-09 09:52:22,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:22,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947317018] [2021-11-09 09:52:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:22,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:22,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:22,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947317018] [2021-11-09 09:52:22,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947317018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:22,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:22,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:52:22,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874634739] [2021-11-09 09:52:22,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:52:22,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:52:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:52:22,303 INFO L87 Difference]: Start difference. First operand 26206 states and 41861 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-09 09:52:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:23,983 INFO L93 Difference]: Finished difference Result 78112 states and 124708 transitions. [2021-11-09 09:52:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:52:23,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-09 09:52:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:24,124 INFO L225 Difference]: With dead ends: 78112 [2021-11-09 09:52:24,124 INFO L226 Difference]: Without dead ends: 52026 [2021-11-09 09:52:24,197 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 [2021-11-09 09:52:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52026 states. [2021-11-09 09:52:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52026 to 26425. [2021-11-09 09:52:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26425 states, 26297 states have (on average 1.6071795261816937) internal successors, (42264), 26424 states have internal predecessors, (42264), 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) [2021-11-09 09:52:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26425 states to 26425 states and 42264 transitions. [2021-11-09 09:52:25,714 INFO L78 Accepts]: Start accepts. Automaton has 26425 states and 42264 transitions. Word has length 79 [2021-11-09 09:52:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:25,715 INFO L470 AbstractCegarLoop]: Abstraction has 26425 states and 42264 transitions. [2021-11-09 09:52:25,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-09 09:52:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 26425 states and 42264 transitions. [2021-11-09 09:52:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 09:52:25,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:25,723 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] [2021-11-09 09:52:25,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:52:25,723 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:25,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash 582695130, now seen corresponding path program 1 times [2021-11-09 09:52:25,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:25,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809591191] [2021-11-09 09:52:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:25,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:25,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:25,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809591191] [2021-11-09 09:52:25,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809591191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:25,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:25,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:52:25,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198678189] [2021-11-09 09:52:25,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:52:25,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:52:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:52:25,822 INFO L87 Difference]: Start difference. First operand 26425 states and 42264 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-09 09:52:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:27,787 INFO L93 Difference]: Finished difference Result 78799 states and 125978 transitions. [2021-11-09 09:52:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:52:27,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-09 09:52:27,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:27,901 INFO L225 Difference]: With dead ends: 78799 [2021-11-09 09:52:27,902 INFO L226 Difference]: Without dead ends: 52503 [2021-11-09 09:52:27,960 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 [2021-11-09 09:52:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52503 states. [2021-11-09 09:52:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52503 to 26902. [2021-11-09 09:52:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26902 states, 26774 states have (on average 1.6114140584148802) internal successors, (43144), 26901 states have internal predecessors, (43144), 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) [2021-11-09 09:52:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26902 states to 26902 states and 43144 transitions. [2021-11-09 09:52:29,633 INFO L78 Accepts]: Start accepts. Automaton has 26902 states and 43144 transitions. Word has length 80 [2021-11-09 09:52:29,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:29,635 INFO L470 AbstractCegarLoop]: Abstraction has 26902 states and 43144 transitions. [2021-11-09 09:52:29,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-09 09:52:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 26902 states and 43144 transitions. [2021-11-09 09:52:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:52:29,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:29,644 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] [2021-11-09 09:52:29,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:52:29,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:29,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1023735877, now seen corresponding path program 1 times [2021-11-09 09:52:29,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:29,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631217794] [2021-11-09 09:52:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:29,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:29,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:29,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631217794] [2021-11-09 09:52:29,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631217794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:29,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:29,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:52:29,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908276400] [2021-11-09 09:52:29,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:52:29,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:52:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:52:29,775 INFO L87 Difference]: Start difference. First operand 26902 states and 43144 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-09 09:52:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:32,063 INFO L93 Difference]: Finished difference Result 80207 states and 128581 transitions. [2021-11-09 09:52:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:52:32,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2021-11-09 09:52:32,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:32,166 INFO L225 Difference]: With dead ends: 80207 [2021-11-09 09:52:32,166 INFO L226 Difference]: Without dead ends: 53443 [2021-11-09 09:52:32,198 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 [2021-11-09 09:52:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53443 states. [2021-11-09 09:52:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53443 to 27842. [2021-11-09 09:52:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27842 states, 27714 states have (on average 1.6193620552789203) internal successors, (44879), 27841 states have internal predecessors, (44879), 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) [2021-11-09 09:52:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27842 states to 27842 states and 44879 transitions. [2021-11-09 09:52:33,687 INFO L78 Accepts]: Start accepts. Automaton has 27842 states and 44879 transitions. Word has length 81 [2021-11-09 09:52:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:33,687 INFO L470 AbstractCegarLoop]: Abstraction has 27842 states and 44879 transitions. [2021-11-09 09:52:33,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-09 09:52:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 27842 states and 44879 transitions. [2021-11-09 09:52:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-09 09:52:33,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:33,704 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] [2021-11-09 09:52:33,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:52:33,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:33,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:33,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1663569572, now seen corresponding path program 2 times [2021-11-09 09:52:33,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:33,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580491174] [2021-11-09 09:52:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:33,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:33,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:33,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580491174] [2021-11-09 09:52:33,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580491174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:33,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:33,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:52:33,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477597566] [2021-11-09 09:52:33,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:52:33,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:52:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:52:33,788 INFO L87 Difference]: Start difference. First operand 27842 states and 44879 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-09 09:52:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:36,394 INFO L93 Difference]: Finished difference Result 80944 states and 129937 transitions. [2021-11-09 09:52:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:52:36,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2021-11-09 09:52:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:36,491 INFO L225 Difference]: With dead ends: 80944 [2021-11-09 09:52:36,491 INFO L226 Difference]: Without dead ends: 53443 [2021-11-09 09:52:36,526 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 [2021-11-09 09:52:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53443 states. [2021-11-09 09:52:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53443 to 27842. [2021-11-09 09:52:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27842 states, 27714 states have (on average 1.6192177238940608) internal successors, (44875), 27841 states have internal predecessors, (44875), 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) [2021-11-09 09:52:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27842 states to 27842 states and 44875 transitions. [2021-11-09 09:52:38,184 INFO L78 Accepts]: Start accepts. Automaton has 27842 states and 44875 transitions. Word has length 81 [2021-11-09 09:52:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:38,184 INFO L470 AbstractCegarLoop]: Abstraction has 27842 states and 44875 transitions. [2021-11-09 09:52:38,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-09 09:52:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 27842 states and 44875 transitions. [2021-11-09 09:52:38,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 09:52:38,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:38,192 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] [2021-11-09 09:52:38,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:52:38,193 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 125 more)] === [2021-11-09 09:52:38,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:38,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1378439281, now seen corresponding path program 1 times [2021-11-09 09:52:38,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:38,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222148831] [2021-11-09 09:52:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:38,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:38,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:38,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222148831] [2021-11-09 09:52:38,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222148831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:38,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:38,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:52:38,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808043271] [2021-11-09 09:52:38,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:52:38,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:52:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:52:38,280 INFO L87 Difference]: Start difference. First operand 27842 states and 44875 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)