./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:34:49,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:34:49,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:34:49,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:34:49,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:34:49,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:34:49,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:34:49,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:34:49,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:34:49,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:34:49,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:34:49,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:34:49,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:34:49,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:34:49,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:34:49,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:34:49,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:34:49,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:34:49,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:34:49,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:34:49,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:34:49,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:34:49,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:34:49,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:34:49,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:34:49,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:34:49,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:34:49,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:34:49,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:34:49,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:34:49,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:34:49,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:34:49,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:34:49,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:34:49,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:34:49,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:34:49,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:34:49,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:34:49,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:34:49,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:34:49,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:34:49,694 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:34:49,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:34:49,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:34:49,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:34:49,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:34:49,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:34:49,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:34:49,746 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:34:49,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:34:49,746 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:34:49,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:34:49,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:34:49,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:34:49,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:34:49,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:34:49,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:34:49,749 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:34:49,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:34:49,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:34:49,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:34:49,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:34:49,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:34:49,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:34:49,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:49,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:34:49,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:34:49,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:34:49,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:34:49,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:34:49,752 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:34:49,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:34:49,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:34:49,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:34:49,755 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_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a [2021-11-09 09:34:50,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:34:50,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:34:50,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:34:50,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:34:50,117 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:34:50,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2021-11-09 09:34:50,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/data/4676cb3a8/303abe56a99c47fdb68d9d8e2d04e012/FLAGf30361d43 [2021-11-09 09:34:50,863 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:34:50,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2021-11-09 09:34:50,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/data/4676cb3a8/303abe56a99c47fdb68d9d8e2d04e012/FLAGf30361d43 [2021-11-09 09:34:51,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/data/4676cb3a8/303abe56a99c47fdb68d9d8e2d04e012 [2021-11-09 09:34:51,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:34:51,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:34:51,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:51,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:34:51,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:34:51,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:51" (1/1) ... [2021-11-09 09:34:51,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f352c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:51, skipping insertion in model container [2021-11-09 09:34:51,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:34:51" (1/1) ... [2021-11-09 09:34:51,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:34:51,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:34:51,565 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_ba7f40e7-3b47-4102-8625-55a4e25023db/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2021-11-09 09:34:51,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:51,831 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:34:51,898 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_ba7f40e7-3b47-4102-8625-55a4e25023db/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2021-11-09 09:34:51,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:34:52,034 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:34:52,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52 WrapperNode [2021-11-09 09:34:52,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:34:52,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:52,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:34:52,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:34:52,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:34:52,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:34:52,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:34:52,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:34:52,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:34:52,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:34:52,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:34:52,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:34:52,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (1/1) ... [2021-11-09 09:34:52,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:34:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:52,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:34:52,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:34:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-09 09:34:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:34:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:34:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:34:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:34:55,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:34:55,095 INFO L299 CfgBuilder]: Removed 501 assume(true) statements. [2021-11-09 09:34:55,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:55 BoogieIcfgContainer [2021-11-09 09:34:55,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:34:55,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:34:55,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:34:55,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:34:55,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:34:51" (1/3) ... [2021-11-09 09:34:55,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37056283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:55, skipping insertion in model container [2021-11-09 09:34:55,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:34:52" (2/3) ... [2021-11-09 09:34:55,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37056283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:34:55, skipping insertion in model container [2021-11-09 09:34:55,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:34:55" (3/3) ... [2021-11-09 09:34:55,109 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product23.cil.c [2021-11-09 09:34:55,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:34:55,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 09:34:55,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:34:55,170 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:34:55,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 09:34:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 749 states have (on average 1.7570093457943925) internal successors, (1316), 755 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 09:34:55,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:55,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:55,220 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash -5754939, now seen corresponding path program 1 times [2021-11-09 09:34:55,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:55,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125249717] [2021-11-09 09:34:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:55,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:55,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:55,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125249717] [2021-11-09 09:34:55,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125249717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:55,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:55,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:34:55,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016121345] [2021-11-09 09:34:55,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:55,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:55,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:55,729 INFO L87 Difference]: Start difference. First operand has 756 states, 749 states have (on average 1.7570093457943925) internal successors, (1316), 755 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:55,922 INFO L93 Difference]: Finished difference Result 2233 states and 3890 transitions. [2021-11-09 09:34:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:55,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-09 09:34:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:55,961 INFO L225 Difference]: With dead ends: 2233 [2021-11-09 09:34:55,961 INFO L226 Difference]: Without dead ends: 1308 [2021-11-09 09:34:55,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-11-09 09:34:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 663. [2021-11-09 09:34:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 657 states have (on average 1.7458143074581431) internal successors, (1147), 662 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1147 transitions. [2021-11-09 09:34:56,105 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1147 transitions. Word has length 41 [2021-11-09 09:34:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:56,106 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 1147 transitions. [2021-11-09 09:34:56,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1147 transitions. [2021-11-09 09:34:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-09 09:34:56,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:56,112 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] [2021-11-09 09:34:56,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:34:56,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1889911641, now seen corresponding path program 1 times [2021-11-09 09:34:56,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:56,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758865060] [2021-11-09 09:34:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:56,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:56,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:56,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758865060] [2021-11-09 09:34:56,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758865060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:56,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:56,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:56,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547813085] [2021-11-09 09:34:56,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:56,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:56,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:56,324 INFO L87 Difference]: Start difference. First operand 663 states and 1147 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:56,554 INFO L93 Difference]: Finished difference Result 1938 states and 3357 transitions. [2021-11-09 09:34:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:34:56,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-09 09:34:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:56,567 INFO L225 Difference]: With dead ends: 1938 [2021-11-09 09:34:56,568 INFO L226 Difference]: Without dead ends: 1294 [2021-11-09 09:34:56,570 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 [2021-11-09 09:34:56,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-11-09 09:34:56,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 663. [2021-11-09 09:34:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 657 states have (on average 1.7442922374429224) internal successors, (1146), 662 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1146 transitions. [2021-11-09 09:34:56,646 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1146 transitions. Word has length 43 [2021-11-09 09:34:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:56,646 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 1146 transitions. [2021-11-09 09:34:56,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1146 transitions. [2021-11-09 09:34:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:34:56,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:56,655 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] [2021-11-09 09:34:56,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:34:56,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:56,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1999621318, now seen corresponding path program 1 times [2021-11-09 09:34:56,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:56,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634931802] [2021-11-09 09:34:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:56,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:56,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:56,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634931802] [2021-11-09 09:34:56,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634931802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:56,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:56,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:34:56,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798368778] [2021-11-09 09:34:56,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:56,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:56,809 INFO L87 Difference]: Start difference. First operand 663 states and 1146 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:56,862 INFO L93 Difference]: Finished difference Result 1308 states and 2266 transitions. [2021-11-09 09:34:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:56,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-09 09:34:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:56,868 INFO L225 Difference]: With dead ends: 1308 [2021-11-09 09:34:56,868 INFO L226 Difference]: Without dead ends: 668 [2021-11-09 09:34:56,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:56,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-09 09:34:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 663. [2021-11-09 09:34:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 657 states have (on average 1.7397260273972603) internal successors, (1143), 662 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1143 transitions. [2021-11-09 09:34:56,900 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1143 transitions. Word has length 44 [2021-11-09 09:34:56,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:56,901 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 1143 transitions. [2021-11-09 09:34:56,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1143 transitions. [2021-11-09 09:34:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 09:34:56,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:56,903 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] [2021-11-09 09:34:56,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:34:56,904 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:56,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash -229074689, now seen corresponding path program 1 times [2021-11-09 09:34:56,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:56,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174972196] [2021-11-09 09:34:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:56,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:57,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:57,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174972196] [2021-11-09 09:34:57,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174972196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:57,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:57,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:57,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435301658] [2021-11-09 09:34:57,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:57,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:57,009 INFO L87 Difference]: Start difference. First operand 663 states and 1143 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2021-11-09 09:34:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:57,219 INFO L93 Difference]: Finished difference Result 1928 states and 3337 transitions. [2021-11-09 09:34:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:57,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 [2021-11-09 09:34:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:57,229 INFO L225 Difference]: With dead ends: 1928 [2021-11-09 09:34:57,229 INFO L226 Difference]: Without dead ends: 1292 [2021-11-09 09:34:57,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-11-09 09:34:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 663. [2021-11-09 09:34:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 657 states have (on average 1.7382039573820396) internal successors, (1142), 662 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1142 transitions. [2021-11-09 09:34:57,273 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1142 transitions. Word has length 46 [2021-11-09 09:34:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:57,274 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 1142 transitions. [2021-11-09 09:34:57,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2021-11-09 09:34:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1142 transitions. [2021-11-09 09:34:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 09:34:57,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:57,299 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] [2021-11-09 09:34:57,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:34:57,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:57,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash -991149956, now seen corresponding path program 1 times [2021-11-09 09:34:57,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:57,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928947181] [2021-11-09 09:34:57,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:57,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:57,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:57,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928947181] [2021-11-09 09:34:57,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928947181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:57,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:57,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:57,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581653509] [2021-11-09 09:34:57,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:57,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:57,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:57,402 INFO L87 Difference]: Start difference. First operand 663 states and 1142 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-09 09:34:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:57,592 INFO L93 Difference]: Finished difference Result 1933 states and 3341 transitions. [2021-11-09 09:34:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:57,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 [2021-11-09 09:34:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:57,603 INFO L225 Difference]: With dead ends: 1933 [2021-11-09 09:34:57,603 INFO L226 Difference]: Without dead ends: 1297 [2021-11-09 09:34:57,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-09 09:34:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 663. [2021-11-09 09:34:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 657 states have (on average 1.7366818873668188) internal successors, (1141), 662 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1141 transitions. [2021-11-09 09:34:57,654 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1141 transitions. Word has length 47 [2021-11-09 09:34:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:57,656 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 1141 transitions. [2021-11-09 09:34:57,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-09 09:34:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1141 transitions. [2021-11-09 09:34:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 09:34:57,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:57,659 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] [2021-11-09 09:34:57,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:34:57,660 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1667423332, now seen corresponding path program 1 times [2021-11-09 09:34:57,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:57,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376927419] [2021-11-09 09:34:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:57,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:57,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:57,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376927419] [2021-11-09 09:34:57,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376927419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:57,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:57,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:34:57,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589902934] [2021-11-09 09:34:57,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:57,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:57,769 INFO L87 Difference]: Start difference. First operand 663 states and 1141 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:57,816 INFO L93 Difference]: Finished difference Result 1045 states and 1776 transitions. [2021-11-09 09:34:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:57,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-09 09:34:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:57,825 INFO L225 Difference]: With dead ends: 1045 [2021-11-09 09:34:57,826 INFO L226 Difference]: Without dead ends: 666 [2021-11-09 09:34:57,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-09 09:34:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 665. [2021-11-09 09:34:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 659 states have (on average 1.7344461305007588) internal successors, (1143), 664 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1143 transitions. [2021-11-09 09:34:57,867 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1143 transitions. Word has length 48 [2021-11-09 09:34:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:57,868 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 1143 transitions. [2021-11-09 09:34:57,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1143 transitions. [2021-11-09 09:34:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:34:57,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:57,869 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:57,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:34:57,870 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:57,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash -848668362, now seen corresponding path program 1 times [2021-11-09 09:34:57,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:57,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500736062] [2021-11-09 09:34:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:57,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:57,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:57,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500736062] [2021-11-09 09:34:57,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500736062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:57,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:57,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:34:57,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270052934] [2021-11-09 09:34:57,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:57,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:57,947 INFO L87 Difference]: Start difference. First operand 665 states and 1143 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) [2021-11-09 09:34:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:58,024 INFO L93 Difference]: Finished difference Result 1881 states and 3253 transitions. [2021-11-09 09:34:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:58,024 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 [2021-11-09 09:34:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:58,033 INFO L225 Difference]: With dead ends: 1881 [2021-11-09 09:34:58,033 INFO L226 Difference]: Without dead ends: 1247 [2021-11-09 09:34:58,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-09 09:34:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 868. [2021-11-09 09:34:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 862 states have (on average 1.7610208816705337) internal successors, (1518), 867 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1518 transitions. [2021-11-09 09:34:58,117 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1518 transitions. Word has length 56 [2021-11-09 09:34:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:58,118 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1518 transitions. [2021-11-09 09:34:58,118 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) [2021-11-09 09:34:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1518 transitions. [2021-11-09 09:34:58,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 09:34:58,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:58,120 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:58,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:34:58,120 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:58,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1336298039, now seen corresponding path program 1 times [2021-11-09 09:34:58,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:58,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766179306] [2021-11-09 09:34:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:58,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:58,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:58,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766179306] [2021-11-09 09:34:58,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766179306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:58,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:58,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:34:58,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641211736] [2021-11-09 09:34:58,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:58,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:58,198 INFO L87 Difference]: Start difference. First operand 868 states and 1518 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:58,565 INFO L93 Difference]: Finished difference Result 2534 states and 4460 transitions. [2021-11-09 09:34:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:58,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-09 09:34:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:58,577 INFO L225 Difference]: With dead ends: 2534 [2021-11-09 09:34:58,578 INFO L226 Difference]: Without dead ends: 1697 [2021-11-09 09:34:58,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2021-11-09 09:34:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 868. [2021-11-09 09:34:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 862 states have (on average 1.7587006960556844) internal successors, (1516), 867 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1516 transitions. [2021-11-09 09:34:58,651 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1516 transitions. Word has length 57 [2021-11-09 09:34:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:58,652 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1516 transitions. [2021-11-09 09:34:58,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1516 transitions. [2021-11-09 09:34:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 09:34:58,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:58,654 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:58,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:34:58,655 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1911135168, now seen corresponding path program 1 times [2021-11-09 09:34:58,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:58,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326802298] [2021-11-09 09:34:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:58,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:58,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:58,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326802298] [2021-11-09 09:34:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326802298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:58,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:58,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:34:58,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974525435] [2021-11-09 09:34:58,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:34:58,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:34:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:58,717 INFO L87 Difference]: Start difference. First operand 868 states and 1516 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:58,848 INFO L93 Difference]: Finished difference Result 2532 states and 4452 transitions. [2021-11-09 09:34:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:58,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-09 09:34:58,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:58,861 INFO L225 Difference]: With dead ends: 2532 [2021-11-09 09:34:58,861 INFO L226 Difference]: Without dead ends: 1695 [2021-11-09 09:34:58,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-09 09:34:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1316. [2021-11-09 09:34:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1310 states have (on average 1.7885496183206107) internal successors, (2343), 1315 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 2343 transitions. [2021-11-09 09:34:58,973 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 2343 transitions. Word has length 58 [2021-11-09 09:34:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:58,974 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 2343 transitions. [2021-11-09 09:34:58,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 2343 transitions. [2021-11-09 09:34:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 09:34:58,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:58,977 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:58,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:34:58,977 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:34:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -677051294, now seen corresponding path program 1 times [2021-11-09 09:34:58,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:34:58,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356145961] [2021-11-09 09:34:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:58,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:34:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:59,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:34:59,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356145961] [2021-11-09 09:34:59,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356145961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:34:59,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089169462] [2021-11-09 09:34:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:59,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:34:59,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:34:59,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:34:59,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:34:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:59,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:59,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:59,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089169462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:34:59,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:34:59,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 09:34:59,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740511401] [2021-11-09 09:34:59,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:59,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:34:59,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:59,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:59,576 INFO L87 Difference]: Start difference. First operand 1316 states and 2343 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:59,720 INFO L93 Difference]: Finished difference Result 2336 states and 4083 transitions. [2021-11-09 09:34:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:59,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-09 09:34:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:59,733 INFO L225 Difference]: With dead ends: 2336 [2021-11-09 09:34:59,733 INFO L226 Difference]: Without dead ends: 1957 [2021-11-09 09:34:59,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-11-09 09:34:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1575. [2021-11-09 09:34:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1569 states have (on average 1.794136392606756) internal successors, (2815), 1574 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:59,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2815 transitions. [2021-11-09 09:34:59,865 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2815 transitions. Word has length 58 [2021-11-09 09:34:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:59,866 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 2815 transitions. [2021-11-09 09:34:59,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:34:59,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2815 transitions. [2021-11-09 09:34:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:34:59,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:59,869 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:59,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-09 09:35:00,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba7f40e7-3b47-4102-8625-55a4e25023db/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:35:00,095 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:00,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash 757317317, now seen corresponding path program 1 times [2021-11-09 09:35:00,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:00,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369631040] [2021-11-09 09:35:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:00,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:00,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:00,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369631040] [2021-11-09 09:35:00,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369631040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:00,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:00,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:00,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063032002] [2021-11-09 09:35:00,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:00,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:00,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:00,165 INFO L87 Difference]: Start difference. First operand 1575 states and 2815 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:00,325 INFO L93 Difference]: Finished difference Result 4316 states and 7737 transitions. [2021-11-09 09:35:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:00,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-09 09:35:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:00,344 INFO L225 Difference]: With dead ends: 4316 [2021-11-09 09:35:00,344 INFO L226 Difference]: Without dead ends: 2842 [2021-11-09 09:35:00,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-11-09 09:35:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2463. [2021-11-09 09:35:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2457 states have (on average 1.8103378103378103) internal successors, (4448), 2462 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 4448 transitions. [2021-11-09 09:35:00,504 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 4448 transitions. Word has length 62 [2021-11-09 09:35:00,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:00,504 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 4448 transitions. [2021-11-09 09:35:00,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 4448 transitions. [2021-11-09 09:35:00,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-09 09:35:00,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:00,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:00,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:35:00,509 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:00,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1584812357, now seen corresponding path program 1 times [2021-11-09 09:35:00,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:00,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140557016] [2021-11-09 09:35:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:00,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:00,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:00,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140557016] [2021-11-09 09:35:00,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140557016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:00,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:00,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:00,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952548589] [2021-11-09 09:35:00,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:00,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:00,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:00,567 INFO L87 Difference]: Start difference. First operand 2463 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:00,816 INFO L93 Difference]: Finished difference Result 6716 states and 12155 transitions. [2021-11-09 09:35:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:00,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-09 09:35:00,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:00,845 INFO L225 Difference]: With dead ends: 6716 [2021-11-09 09:35:00,845 INFO L226 Difference]: Without dead ends: 4388 [2021-11-09 09:35:00,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2021-11-09 09:35:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4009. [2021-11-09 09:35:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 4003 states have (on average 1.8208843367474394) internal successors, (7289), 4008 states have internal predecessors, (7289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 7289 transitions. [2021-11-09 09:35:01,105 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 7289 transitions. Word has length 63 [2021-11-09 09:35:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:01,106 INFO L470 AbstractCegarLoop]: Abstraction has 4009 states and 7289 transitions. [2021-11-09 09:35:01,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 7289 transitions. [2021-11-09 09:35:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:35:01,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:01,110 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:01,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:35:01,110 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1155809844, now seen corresponding path program 1 times [2021-11-09 09:35:01,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:01,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332425965] [2021-11-09 09:35:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:01,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:01,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:01,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332425965] [2021-11-09 09:35:01,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332425965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:01,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:01,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:01,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637930190] [2021-11-09 09:35:01,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:01,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:01,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:01,195 INFO L87 Difference]: Start difference. First operand 4009 states and 7289 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:01,534 INFO L93 Difference]: Finished difference Result 11070 states and 20161 transitions. [2021-11-09 09:35:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:01,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-09 09:35:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:01,571 INFO L225 Difference]: With dead ends: 11070 [2021-11-09 09:35:01,571 INFO L226 Difference]: Without dead ends: 7230 [2021-11-09 09:35:01,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2021-11-09 09:35:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 6851. [2021-11-09 09:35:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6851 states, 6845 states have (on average 1.827027027027027) internal successors, (12506), 6850 states have internal predecessors, (12506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6851 states to 6851 states and 12506 transitions. [2021-11-09 09:35:02,091 INFO L78 Accepts]: Start accepts. Automaton has 6851 states and 12506 transitions. Word has length 64 [2021-11-09 09:35:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:02,091 INFO L470 AbstractCegarLoop]: Abstraction has 6851 states and 12506 transitions. [2021-11-09 09:35:02,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 6851 states and 12506 transitions. [2021-11-09 09:35:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:35:02,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:02,096 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:02,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:35:02,097 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash 874324436, now seen corresponding path program 1 times [2021-11-09 09:35:02,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:02,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166264086] [2021-11-09 09:35:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:02,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:02,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:02,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166264086] [2021-11-09 09:35:02,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166264086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:02,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:02,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:02,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067909111] [2021-11-09 09:35:02,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:02,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:02,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:02,158 INFO L87 Difference]: Start difference. First operand 6851 states and 12506 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:02,740 INFO L93 Difference]: Finished difference Result 20054 states and 36654 transitions. [2021-11-09 09:35:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-09 09:35:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:02,783 INFO L225 Difference]: With dead ends: 20054 [2021-11-09 09:35:02,783 INFO L226 Difference]: Without dead ends: 13376 [2021-11-09 09:35:02,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:02,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2021-11-09 09:35:03,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 12997. [2021-11-09 09:35:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12997 states, 12991 states have (on average 1.829805249788315) internal successors, (23771), 12996 states have internal predecessors, (23771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 23771 transitions. [2021-11-09 09:35:03,578 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 23771 transitions. Word has length 65 [2021-11-09 09:35:03,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:03,579 INFO L470 AbstractCegarLoop]: Abstraction has 12997 states and 23771 transitions. [2021-11-09 09:35:03,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 23771 transitions. [2021-11-09 09:35:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 09:35:03,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:03,586 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:03,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:35:03,587 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash -504434267, now seen corresponding path program 1 times [2021-11-09 09:35:03,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:03,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5235328] [2021-11-09 09:35:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:03,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:03,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:03,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5235328] [2021-11-09 09:35:03,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5235328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:03,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:03,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:03,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005376409] [2021-11-09 09:35:03,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:03,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:03,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:03,647 INFO L87 Difference]: Start difference. First operand 12997 states and 23771 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:04,873 INFO L93 Difference]: Finished difference Result 38194 states and 69924 transitions. [2021-11-09 09:35:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-09 09:35:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:04,949 INFO L225 Difference]: With dead ends: 38194 [2021-11-09 09:35:04,949 INFO L226 Difference]: Without dead ends: 25378 [2021-11-09 09:35:04,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25378 states. [2021-11-09 09:35:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25378 to 24999. [2021-11-09 09:35:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24999 states, 24993 states have (on average 1.8307526107310046) internal successors, (45756), 24998 states have internal predecessors, (45756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24999 states to 24999 states and 45756 transitions. [2021-11-09 09:35:06,291 INFO L78 Accepts]: Start accepts. Automaton has 24999 states and 45756 transitions. Word has length 66 [2021-11-09 09:35:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:06,292 INFO L470 AbstractCegarLoop]: Abstraction has 24999 states and 45756 transitions. [2021-11-09 09:35:06,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 24999 states and 45756 transitions. [2021-11-09 09:35:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 09:35:06,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:06,300 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:06,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:35:06,301 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:06,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash 580534610, now seen corresponding path program 1 times [2021-11-09 09:35:06,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:06,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569940354] [2021-11-09 09:35:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:06,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:06,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:06,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569940354] [2021-11-09 09:35:06,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569940354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:06,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:06,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:06,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863856889] [2021-11-09 09:35:06,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:06,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:06,529 INFO L87 Difference]: Start difference. First operand 24999 states and 45756 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:08,789 INFO L93 Difference]: Finished difference Result 68839 states and 125615 transitions. [2021-11-09 09:35:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-09 09:35:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:08,908 INFO L225 Difference]: With dead ends: 68839 [2021-11-09 09:35:08,908 INFO L226 Difference]: Without dead ends: 44068 [2021-11-09 09:35:08,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44068 states. [2021-11-09 09:35:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44068 to 43689. [2021-11-09 09:35:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43689 states, 43683 states have (on average 1.819586566856672) internal successors, (79485), 43688 states have internal predecessors, (79485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43689 states to 43689 states and 79485 transitions. [2021-11-09 09:35:10,918 INFO L78 Accepts]: Start accepts. Automaton has 43689 states and 79485 transitions. Word has length 67 [2021-11-09 09:35:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:10,919 INFO L470 AbstractCegarLoop]: Abstraction has 43689 states and 79485 transitions. [2021-11-09 09:35:10,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 43689 states and 79485 transitions. [2021-11-09 09:35:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:35:10,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:10,928 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:10,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:35:10,929 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:10,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1443027266, now seen corresponding path program 1 times [2021-11-09 09:35:10,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:10,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630104184] [2021-11-09 09:35:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:10,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:35:11,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:11,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630104184] [2021-11-09 09:35:11,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630104184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:11,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:11,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:35:11,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585597035] [2021-11-09 09:35:11,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:35:11,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:11,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:35:11,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:11,023 INFO L87 Difference]: Start difference. First operand 43689 states and 79485 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:14,291 INFO L93 Difference]: Finished difference Result 128684 states and 234104 transitions. [2021-11-09 09:35:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:35:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 68 [2021-11-09 09:35:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:14,553 INFO L225 Difference]: With dead ends: 128684 [2021-11-09 09:35:14,553 INFO L226 Difference]: Without dead ends: 85291 [2021-11-09 09:35:14,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:35:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85291 states. [2021-11-09 09:35:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85291 to 43689. [2021-11-09 09:35:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43689 states, 43683 states have (on average 1.8136803790948424) internal successors, (79227), 43688 states have internal predecessors, (79227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43689 states to 43689 states and 79227 transitions. [2021-11-09 09:35:17,009 INFO L78 Accepts]: Start accepts. Automaton has 43689 states and 79227 transitions. Word has length 68 [2021-11-09 09:35:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:17,009 INFO L470 AbstractCegarLoop]: Abstraction has 43689 states and 79227 transitions. [2021-11-09 09:35:17,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 43689 states and 79227 transitions. [2021-11-09 09:35:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:35:17,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:17,019 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:17,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:35:17,020 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash -208943392, now seen corresponding path program 2 times [2021-11-09 09:35:17,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:17,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240428759] [2021-11-09 09:35:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:17,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:17,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:17,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240428759] [2021-11-09 09:35:17,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240428759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:17,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:17,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:17,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472779627] [2021-11-09 09:35:17,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:17,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:17,099 INFO L87 Difference]: Start difference. First operand 43689 states and 79227 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:18,789 INFO L93 Difference]: Finished difference Result 87455 states and 158569 transitions. [2021-11-09 09:35:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-09 09:35:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:18,875 INFO L225 Difference]: With dead ends: 87455 [2021-11-09 09:35:18,875 INFO L226 Difference]: Without dead ends: 44068 [2021-11-09 09:35:18,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44068 states. [2021-11-09 09:35:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44068 to 43689. [2021-11-09 09:35:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43689 states, 43683 states have (on average 1.810750177414555) internal successors, (79099), 43688 states have internal predecessors, (79099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:20,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43689 states to 43689 states and 79099 transitions. [2021-11-09 09:35:20,882 INFO L78 Accepts]: Start accepts. Automaton has 43689 states and 79099 transitions. Word has length 68 [2021-11-09 09:35:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:20,883 INFO L470 AbstractCegarLoop]: Abstraction has 43689 states and 79099 transitions. [2021-11-09 09:35:20,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 43689 states and 79099 transitions. [2021-11-09 09:35:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:35:20,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:20,892 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:20,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:35:20,893 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:20,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash -639553133, now seen corresponding path program 1 times [2021-11-09 09:35:20,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:20,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992454990] [2021-11-09 09:35:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:20,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:20,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:20,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992454990] [2021-11-09 09:35:20,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992454990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:20,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:20,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:35:20,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012209446] [2021-11-09 09:35:20,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:35:20,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:20,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:35:20,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:20,953 INFO L87 Difference]: Start difference. First operand 43689 states and 79099 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:23,910 INFO L93 Difference]: Finished difference Result 122569 states and 221747 transitions. [2021-11-09 09:35:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-09 09:35:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:24,058 INFO L225 Difference]: With dead ends: 122569 [2021-11-09 09:35:24,058 INFO L226 Difference]: Without dead ends: 79142 [2021-11-09 09:35:24,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:35:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79142 states. [2021-11-09 09:35:27,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79142 to 78763. [2021-11-09 09:35:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78763 states, 78757 states have (on average 1.8056045811800856) internal successors, (142204), 78762 states have internal predecessors, (142204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78763 states to 78763 states and 142204 transitions. [2021-11-09 09:35:27,748 INFO L78 Accepts]: Start accepts. Automaton has 78763 states and 142204 transitions. Word has length 68 [2021-11-09 09:35:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:27,749 INFO L470 AbstractCegarLoop]: Abstraction has 78763 states and 142204 transitions. [2021-11-09 09:35:27,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:27,749 INFO L276 IsEmpty]: Start isEmpty. Operand 78763 states and 142204 transitions. [2021-11-09 09:35:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:35:27,759 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:27,759 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:27,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:35:27,760 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -905770022, now seen corresponding path program 1 times [2021-11-09 09:35:27,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:27,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346550610] [2021-11-09 09:35:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:27,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 09:35:27,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:27,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346550610] [2021-11-09 09:35:27,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346550610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:27,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:27,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:35:27,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114658832] [2021-11-09 09:35:27,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:35:27,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:35:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:35:27,861 INFO L87 Difference]: Start difference. First operand 78763 states and 142204 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:32,710 INFO L93 Difference]: Finished difference Result 158240 states and 285598 transitions. [2021-11-09 09:35:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:35:32,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-09 09:35:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:33,011 INFO L225 Difference]: With dead ends: 158240 [2021-11-09 09:35:33,011 INFO L226 Difference]: Without dead ends: 157879 [2021-11-09 09:35:33,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:35:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157879 states. [2021-11-09 09:35:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157879 to 157374. [2021-11-09 09:35:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157374 states, 157368 states have (on average 1.8057165370342128) internal successors, (284162), 157373 states have internal predecessors, (284162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157374 states to 157374 states and 284162 transitions. [2021-11-09 09:35:40,324 INFO L78 Accepts]: Start accepts. Automaton has 157374 states and 284162 transitions. Word has length 69 [2021-11-09 09:35:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:40,324 INFO L470 AbstractCegarLoop]: Abstraction has 157374 states and 284162 transitions. [2021-11-09 09:35:40,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 157374 states and 284162 transitions. [2021-11-09 09:35:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 09:35:40,341 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:40,341 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:40,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 09:35:40,342 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 09:35:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2097009312, now seen corresponding path program 1 times [2021-11-09 09:35:40,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:35:40,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011454738] [2021-11-09 09:35:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:40,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:35:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 09:35:40,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:35:40,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011454738] [2021-11-09 09:35:40,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011454738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:40,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:40,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:35:40,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33986427] [2021-11-09 09:35:40,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:35:40,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:35:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:35:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:35:40,410 INFO L87 Difference]: Start difference. First operand 157374 states and 284162 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)