./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.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_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/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_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/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_0dc8224d-8e01-43be-bbda-0a92213e67d1/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 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:44:14,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:44:14,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:44:14,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:44:14,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:44:14,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:44:14,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:44:14,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:44:14,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:44:14,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:44:14,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:44:14,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:44:14,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:44:14,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:44:14,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:44:14,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:44:14,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:44:14,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:44:14,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:44:14,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:44:14,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:44:14,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:44:14,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:44:14,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:44:14,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:44:14,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:44:14,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:44:14,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:44:14,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:44:14,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:44:14,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:44:14,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:44:14,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:44:14,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:44:14,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:44:14,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:44:14,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:44:14,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:44:14,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:44:14,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:44:14,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:44:14,663 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:44:14,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:44:14,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:44:14,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:44:14,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:44:14,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:44:14,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:44:14,723 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:44:14,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:44:14,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:44:14,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:44:14,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:44:14,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:44:14,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:44:14,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:44:14,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:44:14,726 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:44:14,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:44:14,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:44:14,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:44:14,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:44:14,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:44:14,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:44:14,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:14,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:44:14,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:44:14,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:44:14,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:44:14,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:44:14,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:44:14,731 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:44:14,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:44:14,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:44:14,732 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_0dc8224d-8e01-43be-bbda-0a92213e67d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a [2021-11-09 10:44:15,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:44:15,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:44:15,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:44:15,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:44:15,041 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:44:15,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2021-11-09 10:44:15,116 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/data/27b53b644/1ac51053c1a14e5787a81ec77447d3fa/FLAG203d2a7c6 [2021-11-09 10:44:15,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:44:15,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2021-11-09 10:44:15,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/data/27b53b644/1ac51053c1a14e5787a81ec77447d3fa/FLAG203d2a7c6 [2021-11-09 10:44:16,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/data/27b53b644/1ac51053c1a14e5787a81ec77447d3fa [2021-11-09 10:44:16,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:44:16,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:44:16,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:16,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:44:16,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:44:16,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:16,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4aa6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16, skipping insertion in model container [2021-11-09 10:44:16,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:16,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:44:16,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:44:16,541 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_0dc8224d-8e01-43be-bbda-0a92213e67d1/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2021-11-09 10:44:16,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:16,747 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:44:16,849 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_0dc8224d-8e01-43be-bbda-0a92213e67d1/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2021-11-09 10:44:16,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:16,939 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:44:16,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16 WrapperNode [2021-11-09 10:44:16,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:16,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:16,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:44:16,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:44:16,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:17,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:44:17,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:44:17,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:44:17,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:44:17,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:44:17,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:44:17,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:44:17,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (1/1) ... [2021-11-09 10:44:17,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:17,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:17,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:44:17,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc8224d-8e01-43be-bbda-0a92213e67d1/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:44:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:44:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:44:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:44:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:44:26,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:44:26,602 INFO L299 CfgBuilder]: Removed 1245 assume(true) statements. [2021-11-09 10:44:26,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:26 BoogieIcfgContainer [2021-11-09 10:44:26,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:44:26,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:44:26,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:44:26,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:44:26,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:44:16" (1/3) ... [2021-11-09 10:44:26,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31224e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:26, skipping insertion in model container [2021-11-09 10:44:26,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:16" (2/3) ... [2021-11-09 10:44:26,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31224e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:26, skipping insertion in model container [2021-11-09 10:44:26,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:26" (3/3) ... [2021-11-09 10:44:26,619 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2021-11-09 10:44:26,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:44:26,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-09 10:44:26,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:44:26,700 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 10:44:26,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-09 10:44:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 5044 states, 5038 states have (on average 1.8858674077014688) internal successors, (9501), 5043 states have internal predecessors, (9501), 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 10:44:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 10:44:26,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:26,809 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] [2021-11-09 10:44:26,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash -424075637, now seen corresponding path program 1 times [2021-11-09 10:44:26,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:26,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452374254] [2021-11-09 10:44:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:26,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:27,228 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 10:44:27,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:27,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452374254] [2021-11-09 10:44:27,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452374254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:27,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:27,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:27,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265463097] [2021-11-09 10:44:27,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:27,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:27,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:27,276 INFO L87 Difference]: Start difference. First operand has 5044 states, 5038 states have (on average 1.8858674077014688) internal successors, (9501), 5043 states have internal predecessors, (9501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 10:44:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:27,572 INFO L93 Difference]: Finished difference Result 10079 states and 18985 transitions. [2021-11-09 10:44:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-11-09 10:44:27,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:27,624 INFO L225 Difference]: With dead ends: 10079 [2021-11-09 10:44:27,624 INFO L226 Difference]: Without dead ends: 5040 [2021-11-09 10:44:27,638 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 10:44:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2021-11-09 10:44:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5040. [2021-11-09 10:44:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 5035 states have (on average 1.883416087388282) internal successors, (9483), 5039 states have internal predecessors, (9483), 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 10:44:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 9483 transitions. [2021-11-09 10:44:28,000 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 9483 transitions. Word has length 27 [2021-11-09 10:44:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:28,001 INFO L470 AbstractCegarLoop]: Abstraction has 5040 states and 9483 transitions. [2021-11-09 10:44:28,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 10:44:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 9483 transitions. [2021-11-09 10:44:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-09 10:44:28,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:28,010 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] [2021-11-09 10:44:28,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:44:28,011 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1792455045, now seen corresponding path program 1 times [2021-11-09 10:44:28,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:28,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734815905] [2021-11-09 10:44:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:28,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:28,142 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 10:44:28,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:28,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734815905] [2021-11-09 10:44:28,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734815905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:28,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:28,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:44:28,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863629861] [2021-11-09 10:44:28,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:28,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:28,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:28,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:28,150 INFO L87 Difference]: Start difference. First operand 5040 states and 9483 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 10:44:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:28,437 INFO L93 Difference]: Finished difference Result 10031 states and 18882 transitions. [2021-11-09 10:44:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-09 10:44:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:28,473 INFO L225 Difference]: With dead ends: 10031 [2021-11-09 10:44:28,474 INFO L226 Difference]: Without dead ends: 5013 [2021-11-09 10:44:28,484 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 10:44:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-09 10:44:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-09 10:44:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.882388178913738) internal successors, (9427), 5012 states have internal predecessors, (9427), 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 10:44:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9427 transitions. [2021-11-09 10:44:28,675 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9427 transitions. Word has length 34 [2021-11-09 10:44:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:28,675 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9427 transitions. [2021-11-09 10:44:28,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 10:44:28,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9427 transitions. [2021-11-09 10:44:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-09 10:44:28,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:28,678 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] [2021-11-09 10:44:28,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:44:28,678 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:28,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1461689437, now seen corresponding path program 1 times [2021-11-09 10:44:28,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:28,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826713686] [2021-11-09 10:44:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:28,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:28,818 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 10:44:28,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:28,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826713686] [2021-11-09 10:44:28,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826713686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:28,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:28,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:44:28,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584148067] [2021-11-09 10:44:28,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:28,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:28,828 INFO L87 Difference]: Start difference. First operand 5013 states and 9427 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 10:44:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:29,220 INFO L93 Difference]: Finished difference Result 10004 states and 18826 transitions. [2021-11-09 10:44:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:29,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2021-11-09 10:44:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:29,254 INFO L225 Difference]: With dead ends: 10004 [2021-11-09 10:44:29,254 INFO L226 Difference]: Without dead ends: 5013 [2021-11-09 10:44:29,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:44:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-09 10:44:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-09 10:44:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.8821884984025559) internal successors, (9426), 5012 states have internal predecessors, (9426), 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 10:44:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9426 transitions. [2021-11-09 10:44:29,469 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9426 transitions. Word has length 35 [2021-11-09 10:44:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:29,469 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9426 transitions. [2021-11-09 10:44:29,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 10:44:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9426 transitions. [2021-11-09 10:44:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 10:44:29,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:29,472 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] [2021-11-09 10:44:29,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:44:29,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:29,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2079309080, now seen corresponding path program 1 times [2021-11-09 10:44:29,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:29,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867572429] [2021-11-09 10:44:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:29,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:29,549 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 10:44:29,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:29,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867572429] [2021-11-09 10:44:29,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867572429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:29,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:29,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:44:29,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099812104] [2021-11-09 10:44:29,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:29,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:29,552 INFO L87 Difference]: Start difference. First operand 5013 states and 9426 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 10:44:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:29,839 INFO L93 Difference]: Finished difference Result 10004 states and 18825 transitions. [2021-11-09 10:44:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:29,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-11-09 10:44:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:29,874 INFO L225 Difference]: With dead ends: 10004 [2021-11-09 10:44:29,874 INFO L226 Difference]: Without dead ends: 5013 [2021-11-09 10:44:29,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:44:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-09 10:44:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-09 10:44:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.8819888178913737) internal successors, (9425), 5012 states have internal predecessors, (9425), 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 10:44:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9425 transitions. [2021-11-09 10:44:30,110 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9425 transitions. Word has length 36 [2021-11-09 10:44:30,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:30,110 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9425 transitions. [2021-11-09 10:44:30,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 10:44:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9425 transitions. [2021-11-09 10:44:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 10:44:30,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:30,113 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] [2021-11-09 10:44:30,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:44:30,113 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash 321926408, now seen corresponding path program 1 times [2021-11-09 10:44:30,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:30,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378609804] [2021-11-09 10:44:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:30,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:30,185 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 10:44:30,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:30,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378609804] [2021-11-09 10:44:30,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378609804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:30,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:30,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:44:30,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351922026] [2021-11-09 10:44:30,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:30,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:30,188 INFO L87 Difference]: Start difference. First operand 5013 states and 9425 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 10:44:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:30,453 INFO L93 Difference]: Finished difference Result 10004 states and 18824 transitions. [2021-11-09 10:44:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:30,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 37 [2021-11-09 10:44:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:30,480 INFO L225 Difference]: With dead ends: 10004 [2021-11-09 10:44:30,481 INFO L226 Difference]: Without dead ends: 5013 [2021-11-09 10:44:30,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:44:30,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-09 10:44:30,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-09 10:44:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.8817891373801916) internal successors, (9424), 5012 states have internal predecessors, (9424), 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 10:44:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9424 transitions. [2021-11-09 10:44:30,665 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9424 transitions. Word has length 37 [2021-11-09 10:44:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:30,665 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9424 transitions. [2021-11-09 10:44:30,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 10:44:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9424 transitions. [2021-11-09 10:44:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 10:44:30,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:30,667 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] [2021-11-09 10:44:30,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:44:30,667 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:30,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1818390445, now seen corresponding path program 1 times [2021-11-09 10:44:30,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:30,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079021931] [2021-11-09 10:44:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:30,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:30,729 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 10:44:30,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:30,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079021931] [2021-11-09 10:44:30,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079021931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:30,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:30,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:44:30,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484830244] [2021-11-09 10:44:30,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:30,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:30,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:30,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:30,732 INFO L87 Difference]: Start difference. First operand 5013 states and 9424 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 10:44:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:30,956 INFO L93 Difference]: Finished difference Result 10004 states and 18823 transitions. [2021-11-09 10:44:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2021-11-09 10:44:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:30,973 INFO L225 Difference]: With dead ends: 10004 [2021-11-09 10:44:30,973 INFO L226 Difference]: Without dead ends: 5013 [2021-11-09 10:44:30,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:44:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-09 10:44:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-09 10:44:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.8815894568690097) internal successors, (9423), 5012 states have internal predecessors, (9423), 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 10:44:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9423 transitions. [2021-11-09 10:44:31,155 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9423 transitions. Word has length 38 [2021-11-09 10:44:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:31,156 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9423 transitions. [2021-11-09 10:44:31,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 10:44:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9423 transitions. [2021-11-09 10:44:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-09 10:44:31,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:31,157 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] [2021-11-09 10:44:31,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:44:31,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:31,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1036743277, now seen corresponding path program 1 times [2021-11-09 10:44:31,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:31,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925269743] [2021-11-09 10:44:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:31,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:31,243 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 10:44:31,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:31,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925269743] [2021-11-09 10:44:31,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925269743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:31,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:31,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:44:31,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788132775] [2021-11-09 10:44:31,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:31,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:31,246 INFO L87 Difference]: Start difference. First operand 5013 states and 9423 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 10:44:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:31,456 INFO L93 Difference]: Finished difference Result 10004 states and 18822 transitions. [2021-11-09 10:44:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:31,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2021-11-09 10:44:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:31,472 INFO L225 Difference]: With dead ends: 10004 [2021-11-09 10:44:31,472 INFO L226 Difference]: Without dead ends: 5013 [2021-11-09 10:44:31,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:44:31,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-09 10:44:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-09 10:44:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.8813897763578276) internal successors, (9422), 5012 states have internal predecessors, (9422), 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 10:44:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9422 transitions. [2021-11-09 10:44:31,641 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9422 transitions. Word has length 39 [2021-11-09 10:44:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:31,642 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9422 transitions. [2021-11-09 10:44:31,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 10:44:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9422 transitions. [2021-11-09 10:44:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 10:44:31,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:31,645 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] [2021-11-09 10:44:31,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:44:31,645 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:31,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1646874510, now seen corresponding path program 1 times [2021-11-09 10:44:31,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:31,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387070109] [2021-11-09 10:44:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:31,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:31,760 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 10:44:31,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:31,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387070109] [2021-11-09 10:44:31,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387070109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:31,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:31,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:44:31,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251572802] [2021-11-09 10:44:31,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:31,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:31,763 INFO L87 Difference]: Start difference. First operand 5013 states and 9422 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 10:44:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:31,988 INFO L93 Difference]: Finished difference Result 9998 states and 18810 transitions. [2021-11-09 10:44:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2021-11-09 10:44:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:32,002 INFO L225 Difference]: With dead ends: 9998 [2021-11-09 10:44:32,002 INFO L226 Difference]: Without dead ends: 5013 [2021-11-09 10:44:32,010 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 10:44:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-09 10:44:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-09 10:44:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.8811900958466454) internal successors, (9421), 5012 states have internal predecessors, (9421), 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 10:44:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9421 transitions. [2021-11-09 10:44:32,162 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9421 transitions. Word has length 40 [2021-11-09 10:44:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:32,163 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9421 transitions. [2021-11-09 10:44:32,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 10:44:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9421 transitions. [2021-11-09 10:44:32,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 10:44:32,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:32,165 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] [2021-11-09 10:44:32,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 10:44:32,166 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:32,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1034170530, now seen corresponding path program 1 times [2021-11-09 10:44:32,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:32,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108881090] [2021-11-09 10:44:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:32,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:32,253 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 10:44:32,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:32,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108881090] [2021-11-09 10:44:32,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108881090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:32,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:32,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:44:32,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337235405] [2021-11-09 10:44:32,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:32,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:32,256 INFO L87 Difference]: Start difference. First operand 5013 states and 9421 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 10:44:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:32,719 INFO L93 Difference]: Finished difference Result 11609 states and 21871 transitions. [2021-11-09 10:44:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-09 10:44:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:32,744 INFO L225 Difference]: With dead ends: 11609 [2021-11-09 10:44:32,744 INFO L226 Difference]: Without dead ends: 9062 [2021-11-09 10:44:32,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:44:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9062 states. [2021-11-09 10:44:32,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9062 to 6963. [2021-11-09 10:44:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6963 states, 6958 states have (on average 1.8817188847369934) internal successors, (13093), 6962 states have internal predecessors, (13093), 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 10:44:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6963 states to 6963 states and 13093 transitions. [2021-11-09 10:44:32,996 INFO L78 Accepts]: Start accepts. Automaton has 6963 states and 13093 transitions. Word has length 41 [2021-11-09 10:44:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:32,996 INFO L470 AbstractCegarLoop]: Abstraction has 6963 states and 13093 transitions. [2021-11-09 10:44:32,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 10:44:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6963 states and 13093 transitions. [2021-11-09 10:44:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 10:44:33,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:33,001 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] [2021-11-09 10:44:33,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 10:44:33,002 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1794145083, now seen corresponding path program 1 times [2021-11-09 10:44:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:33,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694341626] [2021-11-09 10:44:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:33,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:33,095 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 10:44:33,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:33,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694341626] [2021-11-09 10:44:33,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694341626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:33,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:33,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:44:33,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101610716] [2021-11-09 10:44:33,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:44:33,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:44:33,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:44:33,098 INFO L87 Difference]: Start difference. First operand 6963 states and 13093 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 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 10:44:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:34,420 INFO L93 Difference]: Finished difference Result 15379 states and 28699 transitions. [2021-11-09 10:44:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:44:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-11-09 10:44:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:34,451 INFO L225 Difference]: With dead ends: 15379 [2021-11-09 10:44:34,451 INFO L226 Difference]: Without dead ends: 9664 [2021-11-09 10:44:34,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:44:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2021-11-09 10:44:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 5714. [2021-11-09 10:44:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5714 states, 5709 states have (on average 1.8705552636188474) internal successors, (10679), 5713 states have internal predecessors, (10679), 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 10:44:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10679 transitions. [2021-11-09 10:44:34,803 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10679 transitions. Word has length 60 [2021-11-09 10:44:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:34,803 INFO L470 AbstractCegarLoop]: Abstraction has 5714 states and 10679 transitions. [2021-11-09 10:44:34,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 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 10:44:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10679 transitions. [2021-11-09 10:44:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 10:44:34,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:34,807 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] [2021-11-09 10:44:34,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:44:34,808 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:34,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1044394081, now seen corresponding path program 1 times [2021-11-09 10:44:34,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:34,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345119550] [2021-11-09 10:44:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:34,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:34,898 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 10:44:34,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:34,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345119550] [2021-11-09 10:44:34,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345119550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:34,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:34,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:34,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252957374] [2021-11-09 10:44:34,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:44:34,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:44:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:44:34,902 INFO L87 Difference]: Start difference. First operand 5714 states and 10679 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:36,561 INFO L93 Difference]: Finished difference Result 16111 states and 30114 transitions. [2021-11-09 10:44:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:36,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 10:44:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:36,595 INFO L225 Difference]: With dead ends: 16111 [2021-11-09 10:44:36,595 INFO L226 Difference]: Without dead ends: 10434 [2021-11-09 10:44:36,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 10:44:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2021-11-09 10:44:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 5714. [2021-11-09 10:44:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5714 states, 5709 states have (on average 1.834647048519881) internal successors, (10474), 5713 states have internal predecessors, (10474), 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 10:44:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10474 transitions. [2021-11-09 10:44:36,912 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10474 transitions. Word has length 61 [2021-11-09 10:44:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:36,912 INFO L470 AbstractCegarLoop]: Abstraction has 5714 states and 10474 transitions. [2021-11-09 10:44:36,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10474 transitions. [2021-11-09 10:44:36,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 10:44:36,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:36,916 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] [2021-11-09 10:44:36,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 10:44:36,916 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1730476365, now seen corresponding path program 1 times [2021-11-09 10:44:36,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:36,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980436958] [2021-11-09 10:44:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:36,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:37,018 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 10:44:37,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:37,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980436958] [2021-11-09 10:44:37,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980436958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:37,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:37,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:44:37,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366009267] [2021-11-09 10:44:37,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:37,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:37,021 INFO L87 Difference]: Start difference. First operand 5714 states and 10474 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 10:44:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:37,528 INFO L93 Difference]: Finished difference Result 13935 states and 25496 transitions. [2021-11-09 10:44:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:37,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 69 [2021-11-09 10:44:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:37,555 INFO L225 Difference]: With dead ends: 13935 [2021-11-09 10:44:37,555 INFO L226 Difference]: Without dead ends: 9803 [2021-11-09 10:44:37,562 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 10:44:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2021-11-09 10:44:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 9780. [2021-11-09 10:44:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9780 states, 9775 states have (on average 1.8308951406649616) internal successors, (17897), 9779 states have internal predecessors, (17897), 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 10:44:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9780 states to 9780 states and 17897 transitions. [2021-11-09 10:44:37,961 INFO L78 Accepts]: Start accepts. Automaton has 9780 states and 17897 transitions. Word has length 69 [2021-11-09 10:44:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:37,961 INFO L470 AbstractCegarLoop]: Abstraction has 9780 states and 17897 transitions. [2021-11-09 10:44:37,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 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 10:44:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9780 states and 17897 transitions. [2021-11-09 10:44:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 10:44:37,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:37,965 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] [2021-11-09 10:44:37,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 10:44:37,965 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash -166174170, now seen corresponding path program 1 times [2021-11-09 10:44:37,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:37,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976420213] [2021-11-09 10:44:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:37,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:38,038 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 10:44:38,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:38,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976420213] [2021-11-09 10:44:38,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976420213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:38,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:38,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:44:38,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321840525] [2021-11-09 10:44:38,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:44:38,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:44:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:44:38,041 INFO L87 Difference]: Start difference. First operand 9780 states and 17897 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 10:44:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:38,784 INFO L93 Difference]: Finished difference Result 17973 states and 32851 transitions. [2021-11-09 10:44:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:44:38,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2021-11-09 10:44:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:38,811 INFO L225 Difference]: With dead ends: 17973 [2021-11-09 10:44:38,812 INFO L226 Difference]: Without dead ends: 9803 [2021-11-09 10:44:38,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 10:44:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2021-11-09 10:44:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 9780. [2021-11-09 10:44:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9780 states, 9775 states have (on average 1.828542199488491) internal successors, (17874), 9779 states have internal predecessors, (17874), 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 10:44:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9780 states to 9780 states and 17874 transitions. [2021-11-09 10:44:39,282 INFO L78 Accepts]: Start accepts. Automaton has 9780 states and 17874 transitions. Word has length 70 [2021-11-09 10:44:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:39,282 INFO L470 AbstractCegarLoop]: Abstraction has 9780 states and 17874 transitions. [2021-11-09 10:44:39,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 10:44:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 9780 states and 17874 transitions. [2021-11-09 10:44:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 10:44:39,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:39,286 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] [2021-11-09 10:44:39,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 10:44:39,287 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash -752980184, now seen corresponding path program 1 times [2021-11-09 10:44:39,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:39,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586986564] [2021-11-09 10:44:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:39,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:39,354 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 10:44:39,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:39,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586986564] [2021-11-09 10:44:39,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586986564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:39,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:39,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:39,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974464416] [2021-11-09 10:44:39,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:39,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:39,357 INFO L87 Difference]: Start difference. First operand 9780 states and 17874 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:44:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:39,936 INFO L93 Difference]: Finished difference Result 23830 states and 43658 transitions. [2021-11-09 10:44:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-09 10:44:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:39,980 INFO L225 Difference]: With dead ends: 23830 [2021-11-09 10:44:39,980 INFO L226 Difference]: Without dead ends: 15607 [2021-11-09 10:44:39,993 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 10:44:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15607 states. [2021-11-09 10:44:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15607 to 15607. [2021-11-09 10:44:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15607 states, 15602 states have (on average 1.8361107550314062) internal successors, (28647), 15606 states have internal predecessors, (28647), 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 10:44:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15607 states to 15607 states and 28647 transitions. [2021-11-09 10:44:40,602 INFO L78 Accepts]: Start accepts. Automaton has 15607 states and 28647 transitions. Word has length 70 [2021-11-09 10:44:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 15607 states and 28647 transitions. [2021-11-09 10:44:40,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:44:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 15607 states and 28647 transitions. [2021-11-09 10:44:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 10:44:40,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:40,607 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] [2021-11-09 10:44:40,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 10:44:40,608 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:40,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1133632734, now seen corresponding path program 1 times [2021-11-09 10:44:40,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:40,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518012647] [2021-11-09 10:44:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:40,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:40,681 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 10:44:40,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:40,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518012647] [2021-11-09 10:44:40,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518012647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:40,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:40,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:40,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908051553] [2021-11-09 10:44:40,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:40,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:40,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:40,683 INFO L87 Difference]: Start difference. First operand 15607 states and 28647 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 10:44:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:41,618 INFO L93 Difference]: Finished difference Result 40592 states and 74607 transitions. [2021-11-09 10:44:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:41,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-09 10:44:41,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:41,706 INFO L225 Difference]: With dead ends: 40592 [2021-11-09 10:44:41,706 INFO L226 Difference]: Without dead ends: 27155 [2021-11-09 10:44:41,720 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 10:44:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27155 states. [2021-11-09 10:44:42,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27155 to 27153. [2021-11-09 10:44:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27153 states, 27148 states have (on average 1.8412406070428762) internal successors, (49986), 27152 states have internal predecessors, (49986), 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 10:44:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27153 states to 27153 states and 49986 transitions. [2021-11-09 10:44:42,868 INFO L78 Accepts]: Start accepts. Automaton has 27153 states and 49986 transitions. Word has length 72 [2021-11-09 10:44:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 27153 states and 49986 transitions. [2021-11-09 10:44:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 10:44:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 27153 states and 49986 transitions. [2021-11-09 10:44:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 10:44:42,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:42,873 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] [2021-11-09 10:44:42,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 10:44:42,873 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1967448863, now seen corresponding path program 1 times [2021-11-09 10:44:42,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:42,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571692694] [2021-11-09 10:44:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:42,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:42,956 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 10:44:42,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:42,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571692694] [2021-11-09 10:44:42,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571692694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:42,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:42,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:42,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34989273] [2021-11-09 10:44:42,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:42,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:42,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:42,963 INFO L87 Difference]: Start difference. First operand 27153 states and 49986 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 10:44:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:44,111 INFO L93 Difference]: Finished difference Result 73888 states and 136069 transitions. [2021-11-09 10:44:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:44,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-09 10:44:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:44,236 INFO L225 Difference]: With dead ends: 73888 [2021-11-09 10:44:44,237 INFO L226 Difference]: Without dead ends: 50018 [2021-11-09 10:44:44,266 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 10:44:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50018 states. [2021-11-09 10:44:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50018 to 50014. [2021-11-09 10:44:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50014 states, 50009 states have (on average 1.8440680677478054) internal successors, (92220), 50013 states have internal predecessors, (92220), 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 10:44:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50014 states to 50014 states and 92220 transitions. [2021-11-09 10:44:45,981 INFO L78 Accepts]: Start accepts. Automaton has 50014 states and 92220 transitions. Word has length 73 [2021-11-09 10:44:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:45,982 INFO L470 AbstractCegarLoop]: Abstraction has 50014 states and 92220 transitions. [2021-11-09 10:44:45,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 10:44:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 50014 states and 92220 transitions. [2021-11-09 10:44:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-09 10:44:45,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:45,986 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] [2021-11-09 10:44:45,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 10:44:45,986 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -861342519, now seen corresponding path program 1 times [2021-11-09 10:44:45,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:45,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928668765] [2021-11-09 10:44:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:45,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:46,047 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 10:44:46,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:46,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928668765] [2021-11-09 10:44:46,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928668765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:46,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:46,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:46,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058023017] [2021-11-09 10:44:46,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:46,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:46,050 INFO L87 Difference]: Start difference. First operand 50014 states and 92220 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 10:44:48,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:48,682 INFO L93 Difference]: Finished difference Result 139990 states and 258053 transitions. [2021-11-09 10:44:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:48,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 10:44:48,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:48,903 INFO L225 Difference]: With dead ends: 139990 [2021-11-09 10:44:48,903 INFO L226 Difference]: Without dead ends: 95265 [2021-11-09 10:44:48,949 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 10:44:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95265 states. [2021-11-09 10:44:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95265 to 95259. [2021-11-09 10:44:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95259 states, 95254 states have (on average 1.8452768387679257) internal successors, (175770), 95258 states have internal predecessors, (175770), 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 10:44:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95259 states to 95259 states and 175770 transitions. [2021-11-09 10:44:52,354 INFO L78 Accepts]: Start accepts. Automaton has 95259 states and 175770 transitions. Word has length 74 [2021-11-09 10:44:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:52,354 INFO L470 AbstractCegarLoop]: Abstraction has 95259 states and 175770 transitions. [2021-11-09 10:44:52,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 10:44:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 95259 states and 175770 transitions. [2021-11-09 10:44:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 10:44:52,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:52,357 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] [2021-11-09 10:44:52,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 10:44:52,357 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:44:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash -931784214, now seen corresponding path program 1 times [2021-11-09 10:44:52,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:52,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97904511] [2021-11-09 10:44:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:52,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:52,419 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 10:44:52,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:52,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97904511] [2021-11-09 10:44:52,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97904511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:52,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:52,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:52,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988448546] [2021-11-09 10:44:52,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:52,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:52,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:52,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:52,421 INFO L87 Difference]: Start difference. First operand 95259 states and 175770 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 10:44:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:57,069 INFO L93 Difference]: Finished difference Result 271180 states and 500072 transitions. [2021-11-09 10:44:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:57,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-09 10:44:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:57,594 INFO L225 Difference]: With dead ends: 271180 [2021-11-09 10:44:57,594 INFO L226 Difference]: Without dead ends: 184783 [2021-11-09 10:44:57,684 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 10:44:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184783 states. [2021-11-09 10:45:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184783 to 184775. [2021-11-09 10:45:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184775 states, 184770 states have (on average 1.8453807436272123) internal successors, (340971), 184774 states have internal predecessors, (340971), 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 10:45:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184775 states to 184775 states and 340971 transitions. [2021-11-09 10:45:04,023 INFO L78 Accepts]: Start accepts. Automaton has 184775 states and 340971 transitions. Word has length 75 [2021-11-09 10:45:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:45:04,023 INFO L470 AbstractCegarLoop]: Abstraction has 184775 states and 340971 transitions. [2021-11-09 10:45:04,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 10:45:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 184775 states and 340971 transitions. [2021-11-09 10:45:04,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 10:45:04,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:45:04,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:45:04,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 10:45:04,051 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-09 10:45:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:45:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash 531488025, now seen corresponding path program 1 times [2021-11-09 10:45:04,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:45:04,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090526836] [2021-11-09 10:45:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:45:04,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:45:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:45:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:45:04,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:45:04,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090526836] [2021-11-09 10:45:04,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090526836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:45:04,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:45:04,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:45:04,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908158695] [2021-11-09 10:45:04,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:45:04,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:45:04,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:45:04,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:45:04,120 INFO L87 Difference]: Start difference. First operand 184775 states and 340971 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:45:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:45:11,194 INFO L93 Difference]: Finished difference Result 412568 states and 756627 transitions. [2021-11-09 10:45:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:45:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-09 10:45:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:45:11,704 INFO L225 Difference]: With dead ends: 412568 [2021-11-09 10:45:11,704 INFO L226 Difference]: Without dead ends: 228187 [2021-11-09 10:45:11,816 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 10:45:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228187 states.