./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU --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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:02:19,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:02:19,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:02:19,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:02:19,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:02:19,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:02:19,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:02:19,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:02:19,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:02:19,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:02:19,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:02:19,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:02:19,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:02:19,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:02:19,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:02:19,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:02:19,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:02:19,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:02:19,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:02:19,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:02:19,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:02:19,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:02:19,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:02:19,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:02:19,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:02:19,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:02:19,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:02:19,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:02:19,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:02:19,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:02:19,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:02:19,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:02:19,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:02:19,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:02:19,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:02:19,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:02:19,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:02:19,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:02:19,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:02:19,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:02:19,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:02:19,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:02:19,769 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:02:19,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:02:19,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:02:19,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:02:19,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:02:19,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:02:19,777 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:02:19,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:02:19,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:02:19,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:02:19,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:02:19,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:02:19,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:02:19,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:02:19,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:02:19,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:02:19,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:02:19,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:02:19,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:02:19,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:02:19,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:02:19,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:02:19,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:02:19,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:02:19,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:02:19,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:02:19,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:02:19,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:02:19,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:02:19,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:02:19,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:02:19,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:02:19,784 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_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2021-11-02 23:02:20,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:02:20,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:02:20,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:02:20,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:02:20,142 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:02:20,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-02 23:02:20,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/data/cd919084e/3b6fcde364e046ecb3a99bea011d6807/FLAG8834ac342 [2021-11-02 23:02:21,030 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:02:21,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-11-02 23:02:21,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/data/cd919084e/3b6fcde364e046ecb3a99bea011d6807/FLAG8834ac342 [2021-11-02 23:02:21,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/data/cd919084e/3b6fcde364e046ecb3a99bea011d6807 [2021-11-02 23:02:21,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:02:21,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:02:21,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:02:21,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:02:21,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:02:21,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:02:21" (1/1) ... [2021-11-02 23:02:21,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a4d94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:21, skipping insertion in model container [2021-11-02 23:02:21,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:02:21" (1/1) ... [2021-11-02 23:02:21,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:02:21,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:02:21,663 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_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-02 23:02:22,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:02:22,028 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:02:22,089 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_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-11-02 23:02:22,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:02:22,281 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:02:22,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22 WrapperNode [2021-11-02 23:02:22,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:02:22,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:02:22,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:02:22,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:02:22,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:22,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:22,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:02:22,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:02:22,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:02:22,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:02:22,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:22,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:22,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:22,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:23,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:23,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:23,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:23,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:02:23,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:02:23,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:02:23,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:02:23,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (1/1) ... [2021-11-02 23:02:23,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:02:23,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:02:23,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:02:23,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12cfd9d9-1d03-41a7-8b56-ff24ec6f88c4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:02:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:02:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:02:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:02:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:02:35,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:02:35,625 INFO L299 CfgBuilder]: Removed 1227 assume(true) statements. [2021-11-02 23:02:35,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:02:35 BoogieIcfgContainer [2021-11-02 23:02:35,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:02:35,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:02:35,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:02:35,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:02:35,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:02:21" (1/3) ... [2021-11-02 23:02:35,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6a0707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:02:35, skipping insertion in model container [2021-11-02 23:02:35,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:22" (2/3) ... [2021-11-02 23:02:35,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6a0707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:02:35, skipping insertion in model container [2021-11-02 23:02:35,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:02:35" (3/3) ... [2021-11-02 23:02:35,646 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2021-11-02 23:02:35,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:02:35,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 23:02:35,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:02:35,748 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 [2021-11-02 23:02:35,749 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 23:02:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 5863 states, 5852 states have (on average 1.900205058099795) internal successors, (11120), 5862 states have internal predecessors, (11120), 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) [2021-11-02 23:02:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 23:02:35,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:35,921 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] [2021-11-02 23:02:35,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:35,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:35,929 INFO L85 PathProgramCache]: Analyzing trace with hash 658093255, now seen corresponding path program 1 times [2021-11-02 23:02:35,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:35,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067548919] [2021-11-02 23:02:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:35,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:36,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:36,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067548919] [2021-11-02 23:02:36,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067548919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:36,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:36,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:02:36,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052521010] [2021-11-02 23:02:36,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:02:36,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:02:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:02:36,503 INFO L87 Difference]: Start difference. First operand has 5863 states, 5852 states have (on average 1.900205058099795) internal successors, (11120), 5862 states have internal predecessors, (11120), 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 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2021-11-02 23:02:37,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:37,787 INFO L93 Difference]: Finished difference Result 23277 states and 44149 transitions. [2021-11-02 23:02:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:37,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 [2021-11-02 23:02:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:37,966 INFO L225 Difference]: With dead ends: 23277 [2021-11-02 23:02:37,966 INFO L226 Difference]: Without dead ends: 17427 [2021-11-02 23:02:37,995 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 [2021-11-02 23:02:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2021-11-02 23:02:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 5871. [2021-11-02 23:02:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5871 states, 5861 states have (on average 1.8960928169254394) internal successors, (11113), 5870 states have internal predecessors, (11113), 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) [2021-11-02 23:02:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5871 states to 5871 states and 11113 transitions. [2021-11-02 23:02:38,690 INFO L78 Accepts]: Start accepts. Automaton has 5871 states and 11113 transitions. Word has length 41 [2021-11-02 23:02:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:38,691 INFO L470 AbstractCegarLoop]: Abstraction has 5871 states and 11113 transitions. [2021-11-02 23:02:38,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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) [2021-11-02 23:02:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5871 states and 11113 transitions. [2021-11-02 23:02:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 23:02:38,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:38,703 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] [2021-11-02 23:02:38,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:02:38,704 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1852719386, now seen corresponding path program 1 times [2021-11-02 23:02:38,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:38,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166330067] [2021-11-02 23:02:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:38,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:38,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:38,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166330067] [2021-11-02 23:02:38,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166330067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:38,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:38,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:02:38,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265629280] [2021-11-02 23:02:38,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:02:38,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:02:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:02:38,908 INFO L87 Difference]: Start difference. First operand 5871 states and 11113 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-02 23:02:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:39,332 INFO L93 Difference]: Finished difference Result 11658 states and 22073 transitions. [2021-11-02 23:02:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:02:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-02 23:02:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:39,398 INFO L225 Difference]: With dead ends: 11658 [2021-11-02 23:02:39,398 INFO L226 Difference]: Without dead ends: 5801 [2021-11-02 23:02:39,405 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 [2021-11-02 23:02:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-02 23:02:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-02 23:02:39,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8948368157485753) internal successors, (10973), 5800 states have internal predecessors, (10973), 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) [2021-11-02 23:02:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10973 transitions. [2021-11-02 23:02:39,590 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10973 transitions. Word has length 42 [2021-11-02 23:02:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:39,591 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10973 transitions. [2021-11-02 23:02:39,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-02 23:02:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10973 transitions. [2021-11-02 23:02:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 23:02:39,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:39,595 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] [2021-11-02 23:02:39,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:02:39,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:39,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1250272945, now seen corresponding path program 1 times [2021-11-02 23:02:39,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:39,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602918859] [2021-11-02 23:02:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:39,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:39,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:39,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602918859] [2021-11-02 23:02:39,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602918859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:39,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:39,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:02:39,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570926771] [2021-11-02 23:02:39,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:02:39,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:02:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:02:39,701 INFO L87 Difference]: Start difference. First operand 5801 states and 10973 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-02 23:02:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:40,190 INFO L93 Difference]: Finished difference Result 11576 states and 21909 transitions. [2021-11-02 23:02:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2021-11-02 23:02:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:40,211 INFO L225 Difference]: With dead ends: 11576 [2021-11-02 23:02:40,211 INFO L226 Difference]: Without dead ends: 5801 [2021-11-02 23:02:40,221 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 [2021-11-02 23:02:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-02 23:02:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-02 23:02:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8944914522534968) internal successors, (10971), 5800 states have internal predecessors, (10971), 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) [2021-11-02 23:02:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10971 transitions. [2021-11-02 23:02:40,456 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10971 transitions. Word has length 45 [2021-11-02 23:02:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:40,457 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10971 transitions. [2021-11-02 23:02:40,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-02 23:02:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10971 transitions. [2021-11-02 23:02:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 23:02:40,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:40,464 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] [2021-11-02 23:02:40,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:02:40,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash -54591564, now seen corresponding path program 1 times [2021-11-02 23:02:40,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:40,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740490130] [2021-11-02 23:02:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:40,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:40,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:40,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740490130] [2021-11-02 23:02:40,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740490130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:40,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:40,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:02:40,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179802371] [2021-11-02 23:02:40,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:02:40,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:02:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:02:40,607 INFO L87 Difference]: Start difference. First operand 5801 states and 10971 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-02 23:02:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:41,012 INFO L93 Difference]: Finished difference Result 11576 states and 21906 transitions. [2021-11-02 23:02:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2021-11-02 23:02:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:41,031 INFO L225 Difference]: With dead ends: 11576 [2021-11-02 23:02:41,031 INFO L226 Difference]: Without dead ends: 5801 [2021-11-02 23:02:41,042 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 [2021-11-02 23:02:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-02 23:02:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-02 23:02:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8941460887584183) internal successors, (10969), 5800 states have internal predecessors, (10969), 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) [2021-11-02 23:02:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10969 transitions. [2021-11-02 23:02:41,261 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10969 transitions. Word has length 46 [2021-11-02 23:02:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:41,262 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10969 transitions. [2021-11-02 23:02:41,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-02 23:02:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10969 transitions. [2021-11-02 23:02:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 23:02:41,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:41,265 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] [2021-11-02 23:02:41,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:02:41,266 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:41,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:41,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1822334068, now seen corresponding path program 1 times [2021-11-02 23:02:41,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:41,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145461778] [2021-11-02 23:02:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:41,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:41,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:41,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145461778] [2021-11-02 23:02:41,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145461778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:41,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:41,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:02:41,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259247792] [2021-11-02 23:02:41,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:02:41,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:02:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:02:41,389 INFO L87 Difference]: Start difference. First operand 5801 states and 10969 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-02 23:02:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:41,764 INFO L93 Difference]: Finished difference Result 11576 states and 21903 transitions. [2021-11-02 23:02:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:41,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2021-11-02 23:02:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:41,785 INFO L225 Difference]: With dead ends: 11576 [2021-11-02 23:02:41,786 INFO L226 Difference]: Without dead ends: 5801 [2021-11-02 23:02:41,795 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 [2021-11-02 23:02:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-02 23:02:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-02 23:02:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.8938007252633398) internal successors, (10967), 5800 states have internal predecessors, (10967), 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) [2021-11-02 23:02:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10967 transitions. [2021-11-02 23:02:42,049 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10967 transitions. Word has length 47 [2021-11-02 23:02:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:42,049 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10967 transitions. [2021-11-02 23:02:42,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-02 23:02:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10967 transitions. [2021-11-02 23:02:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 23:02:42,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:42,053 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:42,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:02:42,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash -951972295, now seen corresponding path program 1 times [2021-11-02 23:02:42,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:42,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995403451] [2021-11-02 23:02:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:42,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:42,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:42,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995403451] [2021-11-02 23:02:42,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995403451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:42,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:42,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:02:42,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787324944] [2021-11-02 23:02:42,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:02:42,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:02:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:02:42,156 INFO L87 Difference]: Start difference. First operand 5801 states and 10967 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:42,484 INFO L93 Difference]: Finished difference Result 11576 states and 21900 transitions. [2021-11-02 23:02:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:42,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-02 23:02:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:42,501 INFO L225 Difference]: With dead ends: 11576 [2021-11-02 23:02:42,501 INFO L226 Difference]: Without dead ends: 5801 [2021-11-02 23:02:42,509 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 [2021-11-02 23:02:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-02 23:02:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5801. [2021-11-02 23:02:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5801 states, 5791 states have (on average 1.893455361768261) internal successors, (10965), 5800 states have internal predecessors, (10965), 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) [2021-11-02 23:02:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5801 states to 5801 states and 10965 transitions. [2021-11-02 23:02:42,716 INFO L78 Accepts]: Start accepts. Automaton has 5801 states and 10965 transitions. Word has length 48 [2021-11-02 23:02:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:42,716 INFO L470 AbstractCegarLoop]: Abstraction has 5801 states and 10965 transitions. [2021-11-02 23:02:42,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5801 states and 10965 transitions. [2021-11-02 23:02:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 23:02:42,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:42,719 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] [2021-11-02 23:02:42,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:02:42,720 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1885582439, now seen corresponding path program 1 times [2021-11-02 23:02:42,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:42,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196545015] [2021-11-02 23:02:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:42,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:42,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:42,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196545015] [2021-11-02 23:02:42,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196545015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:42,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:42,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:02:42,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781658103] [2021-11-02 23:02:42,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:02:42,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:02:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:02:42,812 INFO L87 Difference]: Start difference. First operand 5801 states and 10965 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-11-02 23:02:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:44,248 INFO L93 Difference]: Finished difference Result 16381 states and 30837 transitions. [2021-11-02 23:02:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:02:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2021-11-02 23:02:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:44,279 INFO L225 Difference]: With dead ends: 16381 [2021-11-02 23:02:44,279 INFO L226 Difference]: Without dead ends: 10650 [2021-11-02 23:02:44,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:02:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10650 states. [2021-11-02 23:02:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10650 to 10185. [2021-11-02 23:02:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10185 states, 10175 states have (on average 1.8935626535626535) internal successors, (19267), 10184 states have internal predecessors, (19267), 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) [2021-11-02 23:02:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10185 states to 10185 states and 19267 transitions. [2021-11-02 23:02:44,833 INFO L78 Accepts]: Start accepts. Automaton has 10185 states and 19267 transitions. Word has length 49 [2021-11-02 23:02:44,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:44,833 INFO L470 AbstractCegarLoop]: Abstraction has 10185 states and 19267 transitions. [2021-11-02 23:02:44,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-11-02 23:02:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 10185 states and 19267 transitions. [2021-11-02 23:02:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 23:02:44,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:44,836 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] [2021-11-02 23:02:44,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:02:44,837 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:44,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2067597666, now seen corresponding path program 1 times [2021-11-02 23:02:44,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:44,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430305560] [2021-11-02 23:02:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:44,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:44,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:44,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430305560] [2021-11-02 23:02:44,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430305560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:44,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:44,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:02:44,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414821281] [2021-11-02 23:02:44,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:02:44,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:02:44,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:02:44,926 INFO L87 Difference]: Start difference. First operand 10185 states and 19267 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-11-02 23:02:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:49,840 INFO L93 Difference]: Finished difference Result 84466 states and 159956 transitions. [2021-11-02 23:02:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 23:02:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2021-11-02 23:02:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:50,161 INFO L225 Difference]: With dead ends: 84466 [2021-11-02 23:02:50,162 INFO L226 Difference]: Without dead ends: 74351 [2021-11-02 23:02:50,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:02:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74351 states. [2021-11-02 23:02:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74351 to 19113. [2021-11-02 23:02:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19113 states, 19103 states have (on average 1.8923205779196985) internal successors, (36149), 19112 states have internal predecessors, (36149), 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) [2021-11-02 23:02:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19113 states to 19113 states and 36149 transitions. [2021-11-02 23:02:51,815 INFO L78 Accepts]: Start accepts. Automaton has 19113 states and 36149 transitions. Word has length 49 [2021-11-02 23:02:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:51,818 INFO L470 AbstractCegarLoop]: Abstraction has 19113 states and 36149 transitions. [2021-11-02 23:02:51,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-11-02 23:02:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 19113 states and 36149 transitions. [2021-11-02 23:02:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 23:02:51,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:51,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:51,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 23:02:51,822 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:51,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1725686366, now seen corresponding path program 1 times [2021-11-02 23:02:51,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:51,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168259530] [2021-11-02 23:02:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:51,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:51,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:51,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168259530] [2021-11-02 23:02:51,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168259530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:51,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:51,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:02:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680480649] [2021-11-02 23:02:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:02:51,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:02:51,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:02:51,930 INFO L87 Difference]: Start difference. First operand 19113 states and 36149 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:53,754 INFO L93 Difference]: Finished difference Result 56419 states and 106731 transitions. [2021-11-02 23:02:53,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:02:53,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 23:02:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:53,858 INFO L225 Difference]: With dead ends: 56419 [2021-11-02 23:02:53,858 INFO L226 Difference]: Without dead ends: 37338 [2021-11-02 23:02:53,888 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 [2021-11-02 23:02:53,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37338 states. [2021-11-02 23:02:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37338 to 18989. [2021-11-02 23:02:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18989 states, 18979 states have (on average 1.891617050424153) internal successors, (35901), 18988 states have internal predecessors, (35901), 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) [2021-11-02 23:02:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18989 states to 18989 states and 35901 transitions. [2021-11-02 23:02:54,801 INFO L78 Accepts]: Start accepts. Automaton has 18989 states and 35901 transitions. Word has length 50 [2021-11-02 23:02:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:54,802 INFO L470 AbstractCegarLoop]: Abstraction has 18989 states and 35901 transitions. [2021-11-02 23:02:54,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 18989 states and 35901 transitions. [2021-11-02 23:02:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 23:02:54,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:54,804 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:54,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 23:02:54,805 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1748422117, now seen corresponding path program 1 times [2021-11-02 23:02:54,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:54,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970945472] [2021-11-02 23:02:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:54,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:54,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:54,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970945472] [2021-11-02 23:02:54,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970945472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:54,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:54,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:02:54,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529873721] [2021-11-02 23:02:54,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:02:54,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:02:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:02:54,892 INFO L87 Difference]: Start difference. First operand 18989 states and 35901 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:57,526 INFO L93 Difference]: Finished difference Result 45444 states and 85766 transitions. [2021-11-02 23:02:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:02:57,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 23:02:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:57,577 INFO L225 Difference]: With dead ends: 45444 [2021-11-02 23:02:57,577 INFO L226 Difference]: Without dead ends: 26489 [2021-11-02 23:02:57,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:02:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26489 states. [2021-11-02 23:02:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26489 to 26071. [2021-11-02 23:02:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26071 states, 26061 states have (on average 1.875177468247573) internal successors, (48869), 26070 states have internal predecessors, (48869), 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) [2021-11-02 23:02:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26071 states to 26071 states and 48869 transitions. [2021-11-02 23:02:58,645 INFO L78 Accepts]: Start accepts. Automaton has 26071 states and 48869 transitions. Word has length 50 [2021-11-02 23:02:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:58,646 INFO L470 AbstractCegarLoop]: Abstraction has 26071 states and 48869 transitions. [2021-11-02 23:02:58,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 26071 states and 48869 transitions. [2021-11-02 23:02:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 23:02:58,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:58,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:58,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 23:02:58,655 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1148017788, now seen corresponding path program 1 times [2021-11-02 23:02:58,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:58,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968098596] [2021-11-02 23:02:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:58,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:58,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:58,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968098596] [2021-11-02 23:02:58,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968098596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:58,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:58,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:02:58,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725462088] [2021-11-02 23:02:58,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:02:58,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:02:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:02:58,765 INFO L87 Difference]: Start difference. First operand 26071 states and 48869 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:01,106 INFO L93 Difference]: Finished difference Result 77084 states and 144631 transitions. [2021-11-02 23:03:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:03:01,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 23:03:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:01,205 INFO L225 Difference]: With dead ends: 77084 [2021-11-02 23:03:01,205 INFO L226 Difference]: Without dead ends: 51053 [2021-11-02 23:03:01,240 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 [2021-11-02 23:03:01,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51053 states. [2021-11-02 23:03:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51053 to 26071. [2021-11-02 23:03:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26071 states, 26061 states have (on average 1.870918230305821) internal successors, (48758), 26070 states have internal predecessors, (48758), 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) [2021-11-02 23:03:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26071 states to 26071 states and 48758 transitions. [2021-11-02 23:03:02,571 INFO L78 Accepts]: Start accepts. Automaton has 26071 states and 48758 transitions. Word has length 54 [2021-11-02 23:03:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:02,571 INFO L470 AbstractCegarLoop]: Abstraction has 26071 states and 48758 transitions. [2021-11-02 23:03:02,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 26071 states and 48758 transitions. [2021-11-02 23:03:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 23:03:02,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:02,574 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:02,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 23:03:02,574 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1847353343, now seen corresponding path program 1 times [2021-11-02 23:03:02,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:02,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770491575] [2021-11-02 23:03:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:02,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:02,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:02,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770491575] [2021-11-02 23:03:02,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770491575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:02,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:02,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:03:02,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742726026] [2021-11-02 23:03:02,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:03:02,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:03:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:03:02,671 INFO L87 Difference]: Start difference. First operand 26071 states and 48758 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:10,280 INFO L93 Difference]: Finished difference Result 221503 states and 415626 transitions. [2021-11-02 23:03:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 23:03:10,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-02 23:03:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:10,656 INFO L225 Difference]: With dead ends: 221503 [2021-11-02 23:03:10,656 INFO L226 Difference]: Without dead ends: 195491 [2021-11-02 23:03:10,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:03:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195491 states. [2021-11-02 23:03:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195491 to 50205. [2021-11-02 23:03:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50205 states, 50195 states have (on average 1.8694690706245642) internal successors, (93838), 50204 states have internal predecessors, (93838), 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) [2021-11-02 23:03:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50205 states to 50205 states and 93838 transitions. [2021-11-02 23:03:13,914 INFO L78 Accepts]: Start accepts. Automaton has 50205 states and 93838 transitions. Word has length 55 [2021-11-02 23:03:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:13,914 INFO L470 AbstractCegarLoop]: Abstraction has 50205 states and 93838 transitions. [2021-11-02 23:03:13,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 50205 states and 93838 transitions. [2021-11-02 23:03:13,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 23:03:13,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:13,917 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] [2021-11-02 23:03:13,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 23:03:13,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:13,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:13,918 INFO L85 PathProgramCache]: Analyzing trace with hash -549611657, now seen corresponding path program 1 times [2021-11-02 23:03:13,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:13,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289872705] [2021-11-02 23:03:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:13,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:13,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:13,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289872705] [2021-11-02 23:03:13,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289872705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:13,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:13,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:03:13,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511400286] [2021-11-02 23:03:13,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:03:13,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:13,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:03:13,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:03:13,985 INFO L87 Difference]: Start difference. First operand 50205 states and 93838 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-02 23:03:17,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:17,748 INFO L93 Difference]: Finished difference Result 148643 states and 278204 transitions. [2021-11-02 23:03:17,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:03:17,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-02 23:03:17,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:17,968 INFO L225 Difference]: With dead ends: 148643 [2021-11-02 23:03:17,968 INFO L226 Difference]: Without dead ends: 98475 [2021-11-02 23:03:18,021 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 [2021-11-02 23:03:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98475 states. [2021-11-02 23:03:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98475 to 49951. [2021-11-02 23:03:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49951 states, 49941 states have (on average 1.868945355519513) internal successors, (93337), 49950 states have internal predecessors, (93337), 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) [2021-11-02 23:03:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49951 states to 49951 states and 93337 transitions. [2021-11-02 23:03:20,458 INFO L78 Accepts]: Start accepts. Automaton has 49951 states and 93337 transitions. Word has length 56 [2021-11-02 23:03:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:20,459 INFO L470 AbstractCegarLoop]: Abstraction has 49951 states and 93337 transitions. [2021-11-02 23:03:20,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-02 23:03:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 49951 states and 93337 transitions. [2021-11-02 23:03:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 23:03:20,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:20,461 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] [2021-11-02 23:03:20,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 23:03:20,461 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash -605025539, now seen corresponding path program 1 times [2021-11-02 23:03:20,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:20,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564390268] [2021-11-02 23:03:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:20,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:20,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:20,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564390268] [2021-11-02 23:03:20,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564390268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:20,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:20,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:03:20,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892840973] [2021-11-02 23:03:20,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:03:20,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:20,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:03:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:03:20,531 INFO L87 Difference]: Start difference. First operand 49951 states and 93337 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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) [2021-11-02 23:03:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:24,362 INFO L93 Difference]: Finished difference Result 148142 states and 277231 transitions. [2021-11-02 23:03:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:03:24,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 [2021-11-02 23:03:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:24,538 INFO L225 Difference]: With dead ends: 148142 [2021-11-02 23:03:24,539 INFO L226 Difference]: Without dead ends: 98234 [2021-11-02 23:03:24,576 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 [2021-11-02 23:03:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98234 states.