./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.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_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/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_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/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_a48a1c20-417b-4596-8811-e465808c6f44/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 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:46:07,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:46:07,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:46:07,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:46:07,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:46:07,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:46:07,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:46:07,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:46:07,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:46:07,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:46:07,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:46:07,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:46:07,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:46:07,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:46:07,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:46:07,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:46:07,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:46:07,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:46:07,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:46:07,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:46:07,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:46:07,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:46:07,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:46:07,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:46:07,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:46:07,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:46:07,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:46:07,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:46:07,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:46:07,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:46:07,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:46:07,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:46:07,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:46:07,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:46:07,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:46:07,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:46:07,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:46:07,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:46:07,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:46:07,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:46:07,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:46:07,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:46:07,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:46:07,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:46:07,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:46:07,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:46:07,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:46:07,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:46:07,769 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:46:07,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:46:07,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:46:07,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:46:07,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:46:07,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:46:07,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:46:07,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:46:07,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:46:07,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:46:07,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:46:07,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:46:07,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:46:07,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:46:07,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:46:07,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:46:07,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:46:07,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:46:07,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:46:07,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:46:07,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:46:07,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:46:07,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:46:07,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:46:07,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:46:07,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:46:07,779 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_a48a1c20-417b-4596-8811-e465808c6f44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2021-11-09 10:46:08,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:46:08,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:46:08,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:46:08,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:46:08,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:46:08,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2021-11-09 10:46:08,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/data/61d3c3370/da9da6eae4fd483aa8a89c353ad16792/FLAG4be3c67da [2021-11-09 10:46:08,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:46:08,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2021-11-09 10:46:09,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/data/61d3c3370/da9da6eae4fd483aa8a89c353ad16792/FLAG4be3c67da [2021-11-09 10:46:09,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/data/61d3c3370/da9da6eae4fd483aa8a89c353ad16792 [2021-11-09 10:46:09,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:46:09,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:46:09,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:46:09,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:46:09,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:46:09,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b186cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09, skipping insertion in model container [2021-11-09 10:46:09,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:46:09,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:46:09,603 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_a48a1c20-417b-4596-8811-e465808c6f44/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2021-11-09 10:46:09,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:46:09,618 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:46:09,702 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_a48a1c20-417b-4596-8811-e465808c6f44/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2021-11-09 10:46:09,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:46:09,750 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:46:09,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09 WrapperNode [2021-11-09 10:46:09,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:46:09,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:46:09,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:46:09,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:46:09,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:46:09,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:46:09,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:46:09,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:46:09,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:09,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:10,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:10,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:10,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:46:10,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:46:10,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:46:10,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:46:10,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (1/1) ... [2021-11-09 10:46:10,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:46:10,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:10,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:46:10,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:46:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:46:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:46:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:46:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:46:11,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:46:11,903 INFO L299 CfgBuilder]: Removed 173 assume(true) statements. [2021-11-09 10:46:11,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:46:11 BoogieIcfgContainer [2021-11-09 10:46:11,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:46:11,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:46:11,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:46:11,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:46:11,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:46:09" (1/3) ... [2021-11-09 10:46:11,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780226b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:46:11, skipping insertion in model container [2021-11-09 10:46:11,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:09" (2/3) ... [2021-11-09 10:46:11,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780226b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:46:11, skipping insertion in model container [2021-11-09 10:46:11,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:46:11" (3/3) ... [2021-11-09 10:46:11,916 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2021-11-09 10:46:11,922 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:46:11,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-09 10:46:11,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:46:11,997 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:46:11,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-09 10:46:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 519 states, 481 states have (on average 1.8024948024948024) internal successors, (867), 518 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:46:12,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:12,042 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:12,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash 595705480, now seen corresponding path program 1 times [2021-11-09 10:46:12,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:12,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543857720] [2021-11-09 10:46:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:12,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:12,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:12,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543857720] [2021-11-09 10:46:12,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543857720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:12,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:12,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076309342] [2021-11-09 10:46:12,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:12,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:12,316 INFO L87 Difference]: Start difference. First operand has 519 states, 481 states have (on average 1.8024948024948024) internal successors, (867), 518 states have internal predecessors, (867), 0 states have call successors, (0), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:12,634 INFO L93 Difference]: Finished difference Result 1247 states and 2063 transitions. [2021-11-09 10:46:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:12,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-09 10:46:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:12,671 INFO L225 Difference]: With dead ends: 1247 [2021-11-09 10:46:12,671 INFO L226 Difference]: Without dead ends: 722 [2021-11-09 10:46:12,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-11-09 10:46:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 455. [2021-11-09 10:46:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 424 states have (on average 1.6768867924528301) internal successors, (711), 454 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 711 transitions. [2021-11-09 10:46:12,803 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 711 transitions. Word has length 9 [2021-11-09 10:46:12,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:12,804 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 711 transitions. [2021-11-09 10:46:12,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 711 transitions. [2021-11-09 10:46:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:46:12,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:12,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:12,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:46:12,807 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:12,808 INFO L85 PathProgramCache]: Analyzing trace with hash -503954138, now seen corresponding path program 1 times [2021-11-09 10:46:12,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:12,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401996285] [2021-11-09 10:46:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:12,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:12,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:12,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401996285] [2021-11-09 10:46:12,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401996285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:12,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:12,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:12,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178201781] [2021-11-09 10:46:12,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:12,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:12,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:12,871 INFO L87 Difference]: Start difference. First operand 455 states and 711 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:12,947 INFO L93 Difference]: Finished difference Result 1125 states and 1743 transitions. [2021-11-09 10:46:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:12,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-09 10:46:12,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:12,953 INFO L225 Difference]: With dead ends: 1125 [2021-11-09 10:46:12,954 INFO L226 Difference]: Without dead ends: 672 [2021-11-09 10:46:12,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-09 10:46:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 422. [2021-11-09 10:46:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 394 states have (on average 1.6573604060913705) internal successors, (653), 421 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 653 transitions. [2021-11-09 10:46:13,018 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 653 transitions. Word has length 10 [2021-11-09 10:46:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:13,019 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 653 transitions. [2021-11-09 10:46:13,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 653 transitions. [2021-11-09 10:46:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 10:46:13,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:13,021 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:13,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:46:13,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash -248055967, now seen corresponding path program 1 times [2021-11-09 10:46:13,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:13,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853876109] [2021-11-09 10:46:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:13,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:13,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853876109] [2021-11-09 10:46:13,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853876109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:13,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:13,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:13,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055389611] [2021-11-09 10:46:13,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:13,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:13,087 INFO L87 Difference]: Start difference. First operand 422 states and 653 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:13,156 INFO L93 Difference]: Finished difference Result 1244 states and 1930 transitions. [2021-11-09 10:46:13,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-09 10:46:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:13,164 INFO L225 Difference]: With dead ends: 1244 [2021-11-09 10:46:13,164 INFO L226 Difference]: Without dead ends: 832 [2021-11-09 10:46:13,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-11-09 10:46:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 426. [2021-11-09 10:46:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 398 states have (on average 1.650753768844221) internal successors, (657), 425 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 657 transitions. [2021-11-09 10:46:13,192 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 657 transitions. Word has length 14 [2021-11-09 10:46:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:13,193 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 657 transitions. [2021-11-09 10:46:13,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 657 transitions. [2021-11-09 10:46:13,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 10:46:13,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:13,200 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:13,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:46:13,201 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:13,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash -35486156, now seen corresponding path program 1 times [2021-11-09 10:46:13,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:13,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546898003] [2021-11-09 10:46:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:13,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:13,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546898003] [2021-11-09 10:46:13,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546898003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:13,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:13,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:13,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817700242] [2021-11-09 10:46:13,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:13,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:13,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:13,317 INFO L87 Difference]: Start difference. First operand 426 states and 657 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:13,435 INFO L93 Difference]: Finished difference Result 1569 states and 2402 transitions. [2021-11-09 10:46:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-09 10:46:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:13,445 INFO L225 Difference]: With dead ends: 1569 [2021-11-09 10:46:13,446 INFO L226 Difference]: Without dead ends: 1157 [2021-11-09 10:46:13,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-09 10:46:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 428. [2021-11-09 10:46:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 400 states have (on average 1.6475) internal successors, (659), 427 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 659 transitions. [2021-11-09 10:46:13,476 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 659 transitions. Word has length 18 [2021-11-09 10:46:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:13,476 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 659 transitions. [2021-11-09 10:46:13,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 659 transitions. [2021-11-09 10:46:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 10:46:13,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:13,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:13,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:46:13,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:13,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1707916525, now seen corresponding path program 1 times [2021-11-09 10:46:13,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:13,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986424668] [2021-11-09 10:46:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:13,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:13,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986424668] [2021-11-09 10:46:13,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986424668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:13,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:13,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:13,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537395057] [2021-11-09 10:46:13,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:13,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:13,577 INFO L87 Difference]: Start difference. First operand 428 states and 659 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:13,628 INFO L93 Difference]: Finished difference Result 907 states and 1386 transitions. [2021-11-09 10:46:13,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:13,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-09 10:46:13,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:13,634 INFO L225 Difference]: With dead ends: 907 [2021-11-09 10:46:13,634 INFO L226 Difference]: Without dead ends: 664 [2021-11-09 10:46:13,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-09 10:46:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 426. [2021-11-09 10:46:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 398 states have (on average 1.6381909547738693) internal successors, (652), 425 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 652 transitions. [2021-11-09 10:46:13,680 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 652 transitions. Word has length 19 [2021-11-09 10:46:13,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:13,681 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 652 transitions. [2021-11-09 10:46:13,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,681 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 652 transitions. [2021-11-09 10:46:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-09 10:46:13,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:13,682 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] [2021-11-09 10:46:13,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:46:13,683 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:13,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1967275947, now seen corresponding path program 1 times [2021-11-09 10:46:13,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:13,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457772616] [2021-11-09 10:46:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:13,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:13,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457772616] [2021-11-09 10:46:13,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457772616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:13,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887633818] [2021-11-09 10:46:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:13,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:13,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:13,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:46:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:46:13,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:14,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887633818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:14,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:14,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 10:46:14,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492694374] [2021-11-09 10:46:14,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:14,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:14,078 INFO L87 Difference]: Start difference. First operand 426 states and 652 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:14,186 INFO L93 Difference]: Finished difference Result 1659 states and 2553 transitions. [2021-11-09 10:46:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:46:14,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 21 [2021-11-09 10:46:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:14,197 INFO L225 Difference]: With dead ends: 1659 [2021-11-09 10:46:14,197 INFO L226 Difference]: Without dead ends: 1244 [2021-11-09 10:46:14,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 10:46:14,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-11-09 10:46:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 572. [2021-11-09 10:46:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 544 states have (on average 1.6580882352941178) internal successors, (902), 571 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 902 transitions. [2021-11-09 10:46:14,230 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 902 transitions. Word has length 21 [2021-11-09 10:46:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:14,231 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 902 transitions. [2021-11-09 10:46:14,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 902 transitions. [2021-11-09 10:46:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 10:46:14,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:14,233 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:14,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:14,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:14,446 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1165168607, now seen corresponding path program 2 times [2021-11-09 10:46:14,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:14,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537319063] [2021-11-09 10:46:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:14,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 10:46:14,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:14,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537319063] [2021-11-09 10:46:14,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537319063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:14,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:14,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:14,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901607959] [2021-11-09 10:46:14,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:14,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:14,508 INFO L87 Difference]: Start difference. First operand 572 states and 902 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:14,639 INFO L93 Difference]: Finished difference Result 1291 states and 2007 transitions. [2021-11-09 10:46:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:14,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 28 [2021-11-09 10:46:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:14,646 INFO L225 Difference]: With dead ends: 1291 [2021-11-09 10:46:14,647 INFO L226 Difference]: Without dead ends: 777 [2021-11-09 10:46:14,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-09 10:46:14,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 506. [2021-11-09 10:46:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 483 states have (on average 1.608695652173913) internal successors, (777), 505 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 777 transitions. [2021-11-09 10:46:14,677 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 777 transitions. Word has length 28 [2021-11-09 10:46:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:14,678 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 777 transitions. [2021-11-09 10:46:14,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 777 transitions. [2021-11-09 10:46:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 10:46:14,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:14,679 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:14,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:46:14,680 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 777427029, now seen corresponding path program 1 times [2021-11-09 10:46:14,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:14,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673057761] [2021-11-09 10:46:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:14,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 10:46:14,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:14,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673057761] [2021-11-09 10:46:14,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673057761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:14,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:14,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:14,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147626011] [2021-11-09 10:46:14,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:14,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:14,777 INFO L87 Difference]: Start difference. First operand 506 states and 777 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:14,864 INFO L93 Difference]: Finished difference Result 1159 states and 1766 transitions. [2021-11-09 10:46:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:14,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 28 [2021-11-09 10:46:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:14,870 INFO L225 Difference]: With dead ends: 1159 [2021-11-09 10:46:14,870 INFO L226 Difference]: Without dead ends: 684 [2021-11-09 10:46:14,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-11-09 10:46:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 455. [2021-11-09 10:46:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 434 states have (on average 1.5737327188940091) internal successors, (683), 454 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 683 transitions. [2021-11-09 10:46:14,908 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 683 transitions. Word has length 28 [2021-11-09 10:46:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:14,908 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 683 transitions. [2021-11-09 10:46:14,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 683 transitions. [2021-11-09 10:46:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 10:46:14,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:14,910 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 10:46:14,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 10:46:14,911 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash 104948594, now seen corresponding path program 1 times [2021-11-09 10:46:14,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:14,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055575463] [2021-11-09 10:46:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:14,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 10:46:14,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:14,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055575463] [2021-11-09 10:46:14,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055575463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:14,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:14,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:14,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964103465] [2021-11-09 10:46:14,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:14,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:14,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:14,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:14,998 INFO L87 Difference]: Start difference. First operand 455 states and 683 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:15,066 INFO L93 Difference]: Finished difference Result 1093 states and 1647 transitions. [2021-11-09 10:46:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:46:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-09 10:46:15,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:15,074 INFO L225 Difference]: With dead ends: 1093 [2021-11-09 10:46:15,074 INFO L226 Difference]: Without dead ends: 682 [2021-11-09 10:46:15,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:15,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-09 10:46:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 455. [2021-11-09 10:46:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 434 states have (on average 1.5691244239631337) internal successors, (681), 454 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 681 transitions. [2021-11-09 10:46:15,100 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 681 transitions. Word has length 38 [2021-11-09 10:46:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:15,101 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 681 transitions. [2021-11-09 10:46:15,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 681 transitions. [2021-11-09 10:46:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 10:46:15,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:15,103 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:15,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 10:46:15,104 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1338937392, now seen corresponding path program 1 times [2021-11-09 10:46:15,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:15,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678014439] [2021-11-09 10:46:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:15,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-09 10:46:15,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:15,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678014439] [2021-11-09 10:46:15,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678014439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:15,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:15,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:15,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490091331] [2021-11-09 10:46:15,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:15,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,211 INFO L87 Difference]: Start difference. First operand 455 states and 681 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:15,261 INFO L93 Difference]: Finished difference Result 1029 states and 1546 transitions. [2021-11-09 10:46:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:15,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-09 10:46:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:15,267 INFO L225 Difference]: With dead ends: 1029 [2021-11-09 10:46:15,267 INFO L226 Difference]: Without dead ends: 637 [2021-11-09 10:46:15,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-11-09 10:46:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 411. [2021-11-09 10:46:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 391 states have (on average 1.5524296675191815) internal successors, (607), 410 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 607 transitions. [2021-11-09 10:46:15,286 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 607 transitions. Word has length 50 [2021-11-09 10:46:15,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:15,288 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 607 transitions. [2021-11-09 10:46:15,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 607 transitions. [2021-11-09 10:46:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 10:46:15,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:15,291 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:15,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:46:15,291 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash 970476669, now seen corresponding path program 1 times [2021-11-09 10:46:15,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:15,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128590059] [2021-11-09 10:46:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:15,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-09 10:46:15,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:15,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128590059] [2021-11-09 10:46:15,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128590059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:15,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:15,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:15,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639460389] [2021-11-09 10:46:15,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:15,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,389 INFO L87 Difference]: Start difference. First operand 411 states and 607 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:15,456 INFO L93 Difference]: Finished difference Result 863 states and 1275 transitions. [2021-11-09 10:46:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-09 10:46:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:15,460 INFO L225 Difference]: With dead ends: 863 [2021-11-09 10:46:15,461 INFO L226 Difference]: Without dead ends: 507 [2021-11-09 10:46:15,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-09 10:46:15,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 367. [2021-11-09 10:46:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 351 states have (on average 1.4786324786324787) internal successors, (519), 366 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 519 transitions. [2021-11-09 10:46:15,479 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 519 transitions. Word has length 51 [2021-11-09 10:46:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:15,480 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 519 transitions. [2021-11-09 10:46:15,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 519 transitions. [2021-11-09 10:46:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 10:46:15,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:15,483 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:15,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 10:46:15,484 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:15,485 INFO L85 PathProgramCache]: Analyzing trace with hash 216341264, now seen corresponding path program 1 times [2021-11-09 10:46:15,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:15,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248739769] [2021-11-09 10:46:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:15,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-09 10:46:15,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:15,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248739769] [2021-11-09 10:46:15,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248739769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:15,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:15,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:15,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018113588] [2021-11-09 10:46:15,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:15,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:15,568 INFO L87 Difference]: Start difference. First operand 367 states and 519 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:15,614 INFO L93 Difference]: Finished difference Result 871 states and 1254 transitions. [2021-11-09 10:46:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:46:15,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-09 10:46:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:15,621 INFO L225 Difference]: With dead ends: 871 [2021-11-09 10:46:15,621 INFO L226 Difference]: Without dead ends: 576 [2021-11-09 10:46:15,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:15,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-11-09 10:46:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 367. [2021-11-09 10:46:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 351 states have (on average 1.4729344729344729) internal successors, (517), 366 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 517 transitions. [2021-11-09 10:46:15,638 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 517 transitions. Word has length 62 [2021-11-09 10:46:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:15,640 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 517 transitions. [2021-11-09 10:46:15,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 517 transitions. [2021-11-09 10:46:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 10:46:15,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:15,641 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:15,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 10:46:15,643 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:15,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash 542276843, now seen corresponding path program 1 times [2021-11-09 10:46:15,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:15,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799422642] [2021-11-09 10:46:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:15,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-09 10:46:15,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:15,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799422642] [2021-11-09 10:46:15,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799422642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:15,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:15,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:15,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226312248] [2021-11-09 10:46:15,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:15,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,742 INFO L87 Difference]: Start difference. First operand 367 states and 517 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:15,786 INFO L93 Difference]: Finished difference Result 721 states and 1052 transitions. [2021-11-09 10:46:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:15,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-09 10:46:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:15,791 INFO L225 Difference]: With dead ends: 721 [2021-11-09 10:46:15,792 INFO L226 Difference]: Without dead ends: 460 [2021-11-09 10:46:15,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-09 10:46:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 325. [2021-11-09 10:46:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 319 states have (on average 1.45141065830721) internal successors, (463), 324 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 463 transitions. [2021-11-09 10:46:15,809 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 463 transitions. Word has length 76 [2021-11-09 10:46:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:15,809 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 463 transitions. [2021-11-09 10:46:15,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 463 transitions. [2021-11-09 10:46:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 10:46:15,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:15,811 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:15,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 10:46:15,812 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -532838176, now seen corresponding path program 1 times [2021-11-09 10:46:15,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:15,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384819567] [2021-11-09 10:46:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:15,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-09 10:46:15,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:15,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384819567] [2021-11-09 10:46:15,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384819567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:15,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:15,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:15,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547431831] [2021-11-09 10:46:15,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:15,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,873 INFO L87 Difference]: Start difference. First operand 325 states and 463 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 10:46:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:15,905 INFO L93 Difference]: Finished difference Result 512 states and 745 transitions. [2021-11-09 10:46:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:15,906 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 85 [2021-11-09 10:46:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:15,908 INFO L225 Difference]: With dead ends: 512 [2021-11-09 10:46:15,908 INFO L226 Difference]: Without dead ends: 271 [2021-11-09 10:46:15,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-09 10:46:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-11-09 10:46:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 265 states have (on average 1.4339622641509433) internal successors, (380), 270 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 380 transitions. [2021-11-09 10:46:15,921 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 380 transitions. Word has length 85 [2021-11-09 10:46:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:15,921 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 380 transitions. [2021-11-09 10:46:15,922 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 10:46:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 380 transitions. [2021-11-09 10:46:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 10:46:15,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:15,923 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:15,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 10:46:15,923 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1722161102, now seen corresponding path program 1 times [2021-11-09 10:46:15,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:15,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458611259] [2021-11-09 10:46:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:15,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-09 10:46:15,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:15,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458611259] [2021-11-09 10:46:15,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458611259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:15,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:15,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:15,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562040670] [2021-11-09 10:46:15,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:15,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:15,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:15,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:15,981 INFO L87 Difference]: Start difference. First operand 271 states and 380 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:16,017 INFO L93 Difference]: Finished difference Result 444 states and 640 transitions. [2021-11-09 10:46:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:46:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-09 10:46:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:16,020 INFO L225 Difference]: With dead ends: 444 [2021-11-09 10:46:16,020 INFO L226 Difference]: Without dead ends: 271 [2021-11-09 10:46:16,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-09 10:46:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-11-09 10:46:16,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 265 states have (on average 1.4264150943396225) internal successors, (378), 270 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 378 transitions. [2021-11-09 10:46:16,033 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 378 transitions. Word has length 88 [2021-11-09 10:46:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:16,034 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 378 transitions. [2021-11-09 10:46:16,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 378 transitions. [2021-11-09 10:46:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-09 10:46:16,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:16,036 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:16,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 10:46:16,036 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 621115599, now seen corresponding path program 1 times [2021-11-09 10:46:16,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:16,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443424005] [2021-11-09 10:46:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:16,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 10:46:16,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:16,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443424005] [2021-11-09 10:46:16,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443424005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:16,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:16,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:16,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611954439] [2021-11-09 10:46:16,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:16,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:16,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,095 INFO L87 Difference]: Start difference. First operand 271 states and 378 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 10:46:16,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:16,129 INFO L93 Difference]: Finished difference Result 574 states and 839 transitions. [2021-11-09 10:46:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:16,129 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 101 [2021-11-09 10:46:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:16,133 INFO L225 Difference]: With dead ends: 574 [2021-11-09 10:46:16,133 INFO L226 Difference]: Without dead ends: 406 [2021-11-09 10:46:16,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-09 10:46:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 266. [2021-11-09 10:46:16,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.417624521072797) internal successors, (370), 265 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2021-11-09 10:46:16,148 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 101 [2021-11-09 10:46:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:16,149 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2021-11-09 10:46:16,149 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 10:46:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2021-11-09 10:46:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 10:46:16,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:16,151 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:16,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 10:46:16,151 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:16,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2003384041, now seen corresponding path program 1 times [2021-11-09 10:46:16,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:16,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888151410] [2021-11-09 10:46:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:16,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 10:46:16,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:16,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888151410] [2021-11-09 10:46:16,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888151410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:16,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:16,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:16,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292104247] [2021-11-09 10:46:16,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:16,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,215 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:16,255 INFO L93 Difference]: Finished difference Result 555 states and 810 transitions. [2021-11-09 10:46:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:16,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-09 10:46:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:16,259 INFO L225 Difference]: With dead ends: 555 [2021-11-09 10:46:16,259 INFO L226 Difference]: Without dead ends: 392 [2021-11-09 10:46:16,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-09 10:46:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 262. [2021-11-09 10:46:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 258 states have (on average 1.4069767441860466) internal successors, (363), 261 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 363 transitions. [2021-11-09 10:46:16,275 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 363 transitions. Word has length 106 [2021-11-09 10:46:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:16,275 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 363 transitions. [2021-11-09 10:46:16,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 363 transitions. [2021-11-09 10:46:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 10:46:16,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:16,278 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:16,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 10:46:16,278 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2064909061, now seen corresponding path program 1 times [2021-11-09 10:46:16,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:16,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96295341] [2021-11-09 10:46:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:16,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 10:46:16,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:16,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96295341] [2021-11-09 10:46:16,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96295341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:16,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:16,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:16,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230859532] [2021-11-09 10:46:16,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:16,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,342 INFO L87 Difference]: Start difference. First operand 262 states and 363 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:16,365 INFO L93 Difference]: Finished difference Result 419 states and 601 transitions. [2021-11-09 10:46:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-09 10:46:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:16,368 INFO L225 Difference]: With dead ends: 419 [2021-11-09 10:46:16,369 INFO L226 Difference]: Without dead ends: 260 [2021-11-09 10:46:16,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-09 10:46:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2021-11-09 10:46:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 256 states have (on average 1.39453125) internal successors, (357), 258 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 357 transitions. [2021-11-09 10:46:16,383 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 357 transitions. Word has length 112 [2021-11-09 10:46:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:16,383 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 357 transitions. [2021-11-09 10:46:16,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 357 transitions. [2021-11-09 10:46:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-09 10:46:16,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:16,386 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:16,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 10:46:16,386 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:16,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1788757743, now seen corresponding path program 1 times [2021-11-09 10:46:16,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:16,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119510297] [2021-11-09 10:46:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:16,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 10:46:16,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:16,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119510297] [2021-11-09 10:46:16,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119510297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:16,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:16,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:16,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018483019] [2021-11-09 10:46:16,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:16,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:16,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,453 INFO L87 Difference]: Start difference. First operand 259 states and 357 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:16,469 INFO L93 Difference]: Finished difference Result 462 states and 662 transitions. [2021-11-09 10:46:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:16,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 120 [2021-11-09 10:46:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:16,472 INFO L225 Difference]: With dead ends: 462 [2021-11-09 10:46:16,472 INFO L226 Difference]: Without dead ends: 306 [2021-11-09 10:46:16,473 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-09 10:46:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 256. [2021-11-09 10:46:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 254 states have (on average 1.389763779527559) internal successors, (353), 255 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 353 transitions. [2021-11-09 10:46:16,488 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 353 transitions. Word has length 120 [2021-11-09 10:46:16,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:16,489 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 353 transitions. [2021-11-09 10:46:16,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 353 transitions. [2021-11-09 10:46:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:46:16,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:16,492 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-11-09 10:46:16,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 10:46:16,492 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash 594402718, now seen corresponding path program 1 times [2021-11-09 10:46:16,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:16,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641997497] [2021-11-09 10:46:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:16,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-09 10:46:16,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:16,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641997497] [2021-11-09 10:46:16,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641997497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:16,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041326436] [2021-11-09 10:46:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:16,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:16,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:16,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:46:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:16,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:46:16,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-09 10:46:17,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041326436] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:17,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:17,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-09 10:46:17,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165445549] [2021-11-09 10:46:17,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:46:17,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:17,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:46:17,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:17,135 INFO L87 Difference]: Start difference. First operand 256 states and 353 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:17,212 INFO L93 Difference]: Finished difference Result 534 states and 735 transitions. [2021-11-09 10:46:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:17,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 122 [2021-11-09 10:46:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:17,215 INFO L225 Difference]: With dead ends: 534 [2021-11-09 10:46:17,215 INFO L226 Difference]: Without dead ends: 297 [2021-11-09 10:46:17,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:17,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-09 10:46:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-11-09 10:46:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 295 states have (on average 1.3627118644067797) internal successors, (402), 296 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 402 transitions. [2021-11-09 10:46:17,232 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 402 transitions. Word has length 122 [2021-11-09 10:46:17,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:17,232 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 402 transitions. [2021-11-09 10:46:17,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,233 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 402 transitions. [2021-11-09 10:46:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-09 10:46:17,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:17,235 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:17,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:17,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:17,462 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:17,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:17,463 INFO L85 PathProgramCache]: Analyzing trace with hash 986732181, now seen corresponding path program 2 times [2021-11-09 10:46:17,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:17,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878265810] [2021-11-09 10:46:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:17,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:17,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:17,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878265810] [2021-11-09 10:46:17,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878265810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:17,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:17,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:17,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002702443] [2021-11-09 10:46:17,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:17,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:17,607 INFO L87 Difference]: Start difference. First operand 297 states and 402 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:17,713 INFO L93 Difference]: Finished difference Result 626 states and 889 transitions. [2021-11-09 10:46:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 159 [2021-11-09 10:46:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:17,717 INFO L225 Difference]: With dead ends: 626 [2021-11-09 10:46:17,717 INFO L226 Difference]: Without dead ends: 473 [2021-11-09 10:46:17,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-09 10:46:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 379. [2021-11-09 10:46:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 377 states have (on average 1.3793103448275863) internal successors, (520), 378 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 520 transitions. [2021-11-09 10:46:17,740 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 520 transitions. Word has length 159 [2021-11-09 10:46:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:17,740 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 520 transitions. [2021-11-09 10:46:17,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 520 transitions. [2021-11-09 10:46:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-09 10:46:17,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:17,744 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:17,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 10:46:17,744 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash -489944935, now seen corresponding path program 1 times [2021-11-09 10:46:17,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:17,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449127555] [2021-11-09 10:46:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:17,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:17,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:17,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449127555] [2021-11-09 10:46:17,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449127555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:17,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:17,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:17,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264472535] [2021-11-09 10:46:17,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:17,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:17,836 INFO L87 Difference]: Start difference. First operand 379 states and 520 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:17,879 INFO L93 Difference]: Finished difference Result 786 states and 1124 transitions. [2021-11-09 10:46:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:17,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 177 [2021-11-09 10:46:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:17,883 INFO L225 Difference]: With dead ends: 786 [2021-11-09 10:46:17,884 INFO L226 Difference]: Without dead ends: 589 [2021-11-09 10:46:17,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-09 10:46:17,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 450. [2021-11-09 10:46:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 448 states have (on average 1.3861607142857142) internal successors, (621), 449 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 621 transitions. [2021-11-09 10:46:17,939 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 621 transitions. Word has length 177 [2021-11-09 10:46:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:17,940 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 621 transitions. [2021-11-09 10:46:17,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 621 transitions. [2021-11-09 10:46:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-09 10:46:17,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:17,943 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:17,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 10:46:17,944 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash 844933105, now seen corresponding path program 1 times [2021-11-09 10:46:17,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:17,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478162184] [2021-11-09 10:46:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:17,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:18,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:18,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478162184] [2021-11-09 10:46:18,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478162184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:18,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:18,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:18,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269484555] [2021-11-09 10:46:18,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:18,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:18,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:18,042 INFO L87 Difference]: Start difference. First operand 450 states and 621 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:18,105 INFO L93 Difference]: Finished difference Result 938 states and 1343 transitions. [2021-11-09 10:46:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 178 [2021-11-09 10:46:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:18,111 INFO L225 Difference]: With dead ends: 938 [2021-11-09 10:46:18,111 INFO L226 Difference]: Without dead ends: 697 [2021-11-09 10:46:18,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-11-09 10:46:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 546. [2021-11-09 10:46:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 544 states have (on average 1.3952205882352942) internal successors, (759), 545 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 759 transitions. [2021-11-09 10:46:18,155 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 759 transitions. Word has length 178 [2021-11-09 10:46:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:18,156 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 759 transitions. [2021-11-09 10:46:18,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 759 transitions. [2021-11-09 10:46:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-09 10:46:18,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:18,159 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:18,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 10:46:18,160 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:18,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash 333233950, now seen corresponding path program 1 times [2021-11-09 10:46:18,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:18,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509391919] [2021-11-09 10:46:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:18,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:18,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:18,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509391919] [2021-11-09 10:46:18,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509391919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:18,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:18,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:18,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541231911] [2021-11-09 10:46:18,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:18,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:18,241 INFO L87 Difference]: Start difference. First operand 546 states and 759 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:18,305 INFO L93 Difference]: Finished difference Result 1120 states and 1613 transitions. [2021-11-09 10:46:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:18,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 179 [2021-11-09 10:46:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:18,311 INFO L225 Difference]: With dead ends: 1120 [2021-11-09 10:46:18,311 INFO L226 Difference]: Without dead ends: 813 [2021-11-09 10:46:18,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-09 10:46:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 636. [2021-11-09 10:46:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 634 states have (on average 1.411671924290221) internal successors, (895), 635 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 895 transitions. [2021-11-09 10:46:18,355 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 895 transitions. Word has length 179 [2021-11-09 10:46:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:18,356 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 895 transitions. [2021-11-09 10:46:18,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 895 transitions. [2021-11-09 10:46:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-09 10:46:18,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:18,359 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:18,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 10:46:18,360 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash 755935776, now seen corresponding path program 1 times [2021-11-09 10:46:18,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:18,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044329885] [2021-11-09 10:46:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:18,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:18,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:18,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044329885] [2021-11-09 10:46:18,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044329885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:18,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:18,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:46:18,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950549882] [2021-11-09 10:46:18,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:18,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:18,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:18,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:18,464 INFO L87 Difference]: Start difference. First operand 636 states and 895 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:18,632 INFO L93 Difference]: Finished difference Result 1280 states and 1795 transitions. [2021-11-09 10:46:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:46:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 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 179 [2021-11-09 10:46:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:18,639 INFO L225 Difference]: With dead ends: 1280 [2021-11-09 10:46:18,639 INFO L226 Difference]: Without dead ends: 891 [2021-11-09 10:46:18,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:46:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-11-09 10:46:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 636. [2021-11-09 10:46:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 634 states have (on average 1.3974763406940063) internal successors, (886), 635 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 886 transitions. [2021-11-09 10:46:18,689 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 886 transitions. Word has length 179 [2021-11-09 10:46:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:18,690 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 886 transitions. [2021-11-09 10:46:18,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 886 transitions. [2021-11-09 10:46:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-09 10:46:18,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:18,693 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:18,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 10:46:18,694 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1771359290, now seen corresponding path program 1 times [2021-11-09 10:46:18,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:18,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241218833] [2021-11-09 10:46:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:18,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:18,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:18,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241218833] [2021-11-09 10:46:18,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241218833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:18,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:18,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:46:18,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480438150] [2021-11-09 10:46:18,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:18,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:18,787 INFO L87 Difference]: Start difference. First operand 636 states and 886 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:18,966 INFO L93 Difference]: Finished difference Result 1505 states and 2140 transitions. [2021-11-09 10:46:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:46:18,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-11-09 10:46:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:18,974 INFO L225 Difference]: With dead ends: 1505 [2021-11-09 10:46:18,975 INFO L226 Difference]: Without dead ends: 1116 [2021-11-09 10:46:18,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 10:46:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-11-09 10:46:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 636. [2021-11-09 10:46:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 634 states have (on average 1.3958990536277602) internal successors, (885), 635 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 885 transitions. [2021-11-09 10:46:19,028 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 885 transitions. Word has length 180 [2021-11-09 10:46:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:19,029 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 885 transitions. [2021-11-09 10:46:19,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 885 transitions. [2021-11-09 10:46:19,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-09 10:46:19,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:19,032 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:19,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 10:46:19,033 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash -716976534, now seen corresponding path program 1 times [2021-11-09 10:46:19,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:19,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132133567] [2021-11-09 10:46:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:19,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:19,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:19,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132133567] [2021-11-09 10:46:19,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132133567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:19,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:19,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:19,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933667640] [2021-11-09 10:46:19,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:19,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:19,168 INFO L87 Difference]: Start difference. First operand 636 states and 885 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:19,220 INFO L93 Difference]: Finished difference Result 1027 states and 1462 transitions. [2021-11-09 10:46:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-11-09 10:46:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:19,226 INFO L225 Difference]: With dead ends: 1027 [2021-11-09 10:46:19,226 INFO L226 Difference]: Without dead ends: 617 [2021-11-09 10:46:19,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-09 10:46:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2021-11-09 10:46:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 615 states have (on average 1.3804878048780487) internal successors, (849), 616 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 849 transitions. [2021-11-09 10:46:19,274 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 849 transitions. Word has length 181 [2021-11-09 10:46:19,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:19,275 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 849 transitions. [2021-11-09 10:46:19,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 849 transitions. [2021-11-09 10:46:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-09 10:46:19,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:19,278 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:19,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 10:46:19,279 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash -637626816, now seen corresponding path program 1 times [2021-11-09 10:46:19,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:19,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194668154] [2021-11-09 10:46:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:19,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:19,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:19,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194668154] [2021-11-09 10:46:19,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194668154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:19,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:19,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:46:19,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260484780] [2021-11-09 10:46:19,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:46:19,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:46:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:19,426 INFO L87 Difference]: Start difference. First operand 617 states and 849 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:19,605 INFO L93 Difference]: Finished difference Result 1014 states and 1416 transitions. [2021-11-09 10:46:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:46:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-11-09 10:46:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:19,613 INFO L225 Difference]: With dead ends: 1014 [2021-11-09 10:46:19,613 INFO L226 Difference]: Without dead ends: 1012 [2021-11-09 10:46:19,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:46:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-09 10:46:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 619. [2021-11-09 10:46:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 617 states have (on average 1.3792544570502432) internal successors, (851), 618 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 851 transitions. [2021-11-09 10:46:19,674 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 851 transitions. Word has length 181 [2021-11-09 10:46:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:19,674 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 851 transitions. [2021-11-09 10:46:19,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,675 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 851 transitions. [2021-11-09 10:46:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-09 10:46:19,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:19,678 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:19,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 10:46:19,678 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1232274388, now seen corresponding path program 1 times [2021-11-09 10:46:19,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:19,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705735826] [2021-11-09 10:46:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:19,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:19,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:19,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705735826] [2021-11-09 10:46:19,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705735826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:19,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:19,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:19,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797235639] [2021-11-09 10:46:19,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:19,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:19,810 INFO L87 Difference]: Start difference. First operand 619 states and 851 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:19,921 INFO L93 Difference]: Finished difference Result 1239 states and 1696 transitions. [2021-11-09 10:46:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:19,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-09 10:46:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:19,928 INFO L225 Difference]: With dead ends: 1239 [2021-11-09 10:46:19,928 INFO L226 Difference]: Without dead ends: 863 [2021-11-09 10:46:19,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-11-09 10:46:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 619. [2021-11-09 10:46:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 617 states have (on average 1.3646677471636952) internal successors, (842), 618 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 842 transitions. [2021-11-09 10:46:19,991 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 842 transitions. Word has length 184 [2021-11-09 10:46:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:19,991 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 842 transitions. [2021-11-09 10:46:19,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 842 transitions. [2021-11-09 10:46:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-09 10:46:19,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:19,995 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:19,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 10:46:19,996 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:19,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1289532690, now seen corresponding path program 1 times [2021-11-09 10:46:19,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:19,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438079741] [2021-11-09 10:46:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:19,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-09 10:46:20,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:20,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438079741] [2021-11-09 10:46:20,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438079741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:20,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715492450] [2021-11-09 10:46:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:20,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:20,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:20,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:20,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:46:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:20,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:46:20,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-09 10:46:21,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715492450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:21,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:21,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-09 10:46:21,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726101229] [2021-11-09 10:46:21,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 10:46:21,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 10:46:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:46:21,118 INFO L87 Difference]: Start difference. First operand 619 states and 842 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:21,963 INFO L93 Difference]: Finished difference Result 3769 states and 5359 transitions. [2021-11-09 10:46:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 10:46:21,964 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 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 184 [2021-11-09 10:46:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:21,986 INFO L225 Difference]: With dead ends: 3769 [2021-11-09 10:46:21,986 INFO L226 Difference]: Without dead ends: 3393 [2021-11-09 10:46:21,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2021-11-09 10:46:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2021-11-09 10:46:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 834. [2021-11-09 10:46:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.3473557692307692) internal successors, (1121), 833 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1121 transitions. [2021-11-09 10:46:22,125 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1121 transitions. Word has length 184 [2021-11-09 10:46:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:22,125 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1121 transitions. [2021-11-09 10:46:22,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1121 transitions. [2021-11-09 10:46:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-09 10:46:22,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:22,129 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:22,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:22,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:22,342 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1725570928, now seen corresponding path program 1 times [2021-11-09 10:46:22,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:22,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525468496] [2021-11-09 10:46:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:22,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:22,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:22,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525468496] [2021-11-09 10:46:22,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525468496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:22,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:22,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:22,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796239741] [2021-11-09 10:46:22,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:22,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:22,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:22,423 INFO L87 Difference]: Start difference. First operand 834 states and 1121 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:22,598 INFO L93 Difference]: Finished difference Result 1860 states and 2533 transitions. [2021-11-09 10:46:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:22,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-09 10:46:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:22,608 INFO L225 Difference]: With dead ends: 1860 [2021-11-09 10:46:22,608 INFO L226 Difference]: Without dead ends: 1484 [2021-11-09 10:46:22,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-11-09 10:46:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 834. [2021-11-09 10:46:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.3449519230769231) internal successors, (1119), 833 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1119 transitions. [2021-11-09 10:46:22,695 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1119 transitions. Word has length 184 [2021-11-09 10:46:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:22,695 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1119 transitions. [2021-11-09 10:46:22,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1119 transitions. [2021-11-09 10:46:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-09 10:46:22,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:22,699 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:22,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 10:46:22,700 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1266859346, now seen corresponding path program 1 times [2021-11-09 10:46:22,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:22,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163691040] [2021-11-09 10:46:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:22,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-09 10:46:22,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:22,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163691040] [2021-11-09 10:46:22,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163691040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:22,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:22,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:22,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470071194] [2021-11-09 10:46:22,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:22,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:22,760 INFO L87 Difference]: Start difference. First operand 834 states and 1119 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:22,865 INFO L93 Difference]: Finished difference Result 1400 states and 1891 transitions. [2021-11-09 10:46:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:22,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 187 [2021-11-09 10:46:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:22,870 INFO L225 Difference]: With dead ends: 1400 [2021-11-09 10:46:22,871 INFO L226 Difference]: Without dead ends: 687 [2021-11-09 10:46:22,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-09 10:46:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 686. [2021-11-09 10:46:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 684 states have (on average 1.3128654970760234) internal successors, (898), 685 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 898 transitions. [2021-11-09 10:46:22,937 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 898 transitions. Word has length 187 [2021-11-09 10:46:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:22,938 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 898 transitions. [2021-11-09 10:46:22,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 898 transitions. [2021-11-09 10:46:22,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-09 10:46:22,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:22,941 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:22,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 10:46:22,942 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:22,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:22,943 INFO L85 PathProgramCache]: Analyzing trace with hash -536764940, now seen corresponding path program 1 times [2021-11-09 10:46:22,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:22,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795574389] [2021-11-09 10:46:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:22,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:23,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:23,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795574389] [2021-11-09 10:46:23,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795574389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:23,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:23,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 10:46:23,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583904734] [2021-11-09 10:46:23,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:46:23,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:23,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:46:23,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:46:23,186 INFO L87 Difference]: Start difference. First operand 686 states and 898 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:24,108 INFO L93 Difference]: Finished difference Result 2156 states and 2825 transitions. [2021-11-09 10:46:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 10:46:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 192 [2021-11-09 10:46:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:24,129 INFO L225 Difference]: With dead ends: 2156 [2021-11-09 10:46:24,136 INFO L226 Difference]: Without dead ends: 1791 [2021-11-09 10:46:24,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:46:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-09 10:46:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 997. [2021-11-09 10:46:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 995 states have (on average 1.2683417085427136) internal successors, (1262), 996 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1262 transitions. [2021-11-09 10:46:24,251 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1262 transitions. Word has length 192 [2021-11-09 10:46:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:24,252 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1262 transitions. [2021-11-09 10:46:24,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1262 transitions. [2021-11-09 10:46:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-09 10:46:24,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:24,256 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:24,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 10:46:24,256 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:24,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1801145710, now seen corresponding path program 1 times [2021-11-09 10:46:24,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:24,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205441329] [2021-11-09 10:46:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:24,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:24,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:24,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205441329] [2021-11-09 10:46:24,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205441329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:24,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:24,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:46:24,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121405222] [2021-11-09 10:46:24,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:46:24,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:46:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:24,378 INFO L87 Difference]: Start difference. First operand 997 states and 1262 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:24,773 INFO L93 Difference]: Finished difference Result 3325 states and 4302 transitions. [2021-11-09 10:46:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:46:24,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 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 198 [2021-11-09 10:46:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:24,795 INFO L225 Difference]: With dead ends: 3325 [2021-11-09 10:46:24,795 INFO L226 Difference]: Without dead ends: 2643 [2021-11-09 10:46:24,797 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2021-11-09 10:46:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 1126. [2021-11-09 10:46:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1124 states have (on average 1.2669039145907472) internal successors, (1424), 1125 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1424 transitions. [2021-11-09 10:46:24,947 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1424 transitions. Word has length 198 [2021-11-09 10:46:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:24,947 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1424 transitions. [2021-11-09 10:46:24,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1424 transitions. [2021-11-09 10:46:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-09 10:46:24,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:24,952 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:24,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 10:46:24,953 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:24,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1735498706, now seen corresponding path program 1 times [2021-11-09 10:46:24,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:24,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040697464] [2021-11-09 10:46:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:24,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:25,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:25,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040697464] [2021-11-09 10:46:25,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040697464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:25,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:25,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 10:46:25,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440856402] [2021-11-09 10:46:25,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:46:25,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:46:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:46:25,210 INFO L87 Difference]: Start difference. First operand 1126 states and 1424 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:27,452 INFO L93 Difference]: Finished difference Result 4645 states and 5945 transitions. [2021-11-09 10:46:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-09 10:46:27,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 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 198 [2021-11-09 10:46:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:27,463 INFO L225 Difference]: With dead ends: 4645 [2021-11-09 10:46:27,463 INFO L226 Difference]: Without dead ends: 3837 [2021-11-09 10:46:27,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 10:46:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2021-11-09 10:46:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 1354. [2021-11-09 10:46:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1352 states have (on average 1.2477810650887573) internal successors, (1687), 1353 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1687 transitions. [2021-11-09 10:46:27,686 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1687 transitions. Word has length 198 [2021-11-09 10:46:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:27,686 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 1687 transitions. [2021-11-09 10:46:27,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1687 transitions. [2021-11-09 10:46:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-09 10:46:27,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:27,691 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:27,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 10:46:27,692 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 837335658, now seen corresponding path program 1 times [2021-11-09 10:46:27,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:27,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844567090] [2021-11-09 10:46:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:27,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:27,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:27,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844567090] [2021-11-09 10:46:27,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844567090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:27,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:27,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 10:46:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23959922] [2021-11-09 10:46:27,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:46:27,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:46:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:46:27,901 INFO L87 Difference]: Start difference. First operand 1354 states and 1687 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:29,131 INFO L93 Difference]: Finished difference Result 3350 states and 4237 transitions. [2021-11-09 10:46:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 10:46:29,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 198 [2021-11-09 10:46:29,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:29,138 INFO L225 Difference]: With dead ends: 3350 [2021-11-09 10:46:29,139 INFO L226 Difference]: Without dead ends: 2309 [2021-11-09 10:46:29,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-11-09 10:46:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2021-11-09 10:46:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 1297. [2021-11-09 10:46:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1295 states have (on average 1.2447876447876447) internal successors, (1612), 1296 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1612 transitions. [2021-11-09 10:46:29,316 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1612 transitions. Word has length 198 [2021-11-09 10:46:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:29,317 INFO L470 AbstractCegarLoop]: Abstraction has 1297 states and 1612 transitions. [2021-11-09 10:46:29,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1612 transitions. [2021-11-09 10:46:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-09 10:46:29,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:29,322 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:29,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 10:46:29,322 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash -932697503, now seen corresponding path program 1 times [2021-11-09 10:46:29,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:29,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818516944] [2021-11-09 10:46:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:29,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-11-09 10:46:29,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:29,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818516944] [2021-11-09 10:46:29,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818516944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:29,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:29,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:29,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144454114] [2021-11-09 10:46:29,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:29,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:29,420 INFO L87 Difference]: Start difference. First operand 1297 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:29,738 INFO L93 Difference]: Finished difference Result 2474 states and 3093 transitions. [2021-11-09 10:46:29,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:29,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 208 [2021-11-09 10:46:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:29,742 INFO L225 Difference]: With dead ends: 2474 [2021-11-09 10:46:29,743 INFO L226 Difference]: Without dead ends: 1484 [2021-11-09 10:46:29,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-11-09 10:46:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1197. [2021-11-09 10:46:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1196 states have (on average 1.2249163879598661) internal successors, (1465), 1196 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1465 transitions. [2021-11-09 10:46:29,873 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1465 transitions. Word has length 208 [2021-11-09 10:46:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:29,874 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1465 transitions. [2021-11-09 10:46:29,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:29,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1465 transitions. [2021-11-09 10:46:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-09 10:46:29,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:29,880 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:29,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-09 10:46:29,880 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1713181858, now seen corresponding path program 1 times [2021-11-09 10:46:29,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:29,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812870108] [2021-11-09 10:46:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:29,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:30,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:30,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812870108] [2021-11-09 10:46:30,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812870108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:30,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206900164] [2021-11-09 10:46:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:30,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:30,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:30,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:30,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:46:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:30,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:46:30,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-09 10:46:31,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206900164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:31,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:46:31,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2021-11-09 10:46:31,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296613862] [2021-11-09 10:46:31,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:46:31,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:31,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:46:31,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:46:31,476 INFO L87 Difference]: Start difference. First operand 1197 states and 1465 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:32,026 INFO L93 Difference]: Finished difference Result 3002 states and 3691 transitions. [2021-11-09 10:46:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 10:46:32,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 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 233 [2021-11-09 10:46:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:32,031 INFO L225 Difference]: With dead ends: 3002 [2021-11-09 10:46:32,032 INFO L226 Difference]: Without dead ends: 2126 [2021-11-09 10:46:32,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2021-11-09 10:46:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-11-09 10:46:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1227. [2021-11-09 10:46:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 1.2226753670473083) internal successors, (1499), 1226 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1499 transitions. [2021-11-09 10:46:32,176 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1499 transitions. Word has length 233 [2021-11-09 10:46:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:32,176 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1499 transitions. [2021-11-09 10:46:32,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1499 transitions. [2021-11-09 10:46:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-09 10:46:32,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:32,180 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-11-09 10:46:32,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:32,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:32,394 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2084822996, now seen corresponding path program 1 times [2021-11-09 10:46:32,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:32,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361175874] [2021-11-09 10:46:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:32,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:32,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:32,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361175874] [2021-11-09 10:46:32,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361175874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:32,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400995904] [2021-11-09 10:46:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:32,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:32,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:32,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:32,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:46:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:33,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-09 10:46:33,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 34 proven. 13 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-09 10:46:34,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400995904] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:34,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:34,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2021-11-09 10:46:34,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154775997] [2021-11-09 10:46:34,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-09 10:46:34,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:34,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-09 10:46:34,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-11-09 10:46:34,139 INFO L87 Difference]: Start difference. First operand 1227 states and 1499 transitions. Second operand has 23 states, 23 states have (on average 12.826086956521738) internal successors, (295), 23 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:37,546 INFO L93 Difference]: Finished difference Result 4477 states and 5575 transitions. [2021-11-09 10:46:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-09 10:46:37,546 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.826086956521738) internal successors, (295), 23 states have internal predecessors, (295), 0 states have call successors, (0), 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 239 [2021-11-09 10:46:37,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:37,552 INFO L225 Difference]: With dead ends: 4477 [2021-11-09 10:46:37,552 INFO L226 Difference]: Without dead ends: 3565 [2021-11-09 10:46:37,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=781, Invalid=6191, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 10:46:37,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-11-09 10:46:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 1844. [2021-11-09 10:46:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 1.2419967444384157) internal successors, (2289), 1843 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2289 transitions. [2021-11-09 10:46:37,741 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2289 transitions. Word has length 239 [2021-11-09 10:46:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:37,741 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2289 transitions. [2021-11-09 10:46:37,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.826086956521738) internal successors, (295), 23 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2289 transitions. [2021-11-09 10:46:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-09 10:46:37,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:37,747 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-11-09 10:46:37,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:37,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:37,962 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:37,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash -806266449, now seen corresponding path program 1 times [2021-11-09 10:46:37,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:37,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102037704] [2021-11-09 10:46:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:37,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-09 10:46:38,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:38,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102037704] [2021-11-09 10:46:38,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102037704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:38,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:38,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:46:38,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438057029] [2021-11-09 10:46:38,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:46:38,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:46:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:38,029 INFO L87 Difference]: Start difference. First operand 1844 states and 2289 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:38,244 INFO L93 Difference]: Finished difference Result 3307 states and 4095 transitions. [2021-11-09 10:46:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:46:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 242 [2021-11-09 10:46:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:38,248 INFO L225 Difference]: With dead ends: 3307 [2021-11-09 10:46:38,248 INFO L226 Difference]: Without dead ends: 1476 [2021-11-09 10:46:38,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:46:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-09 10:46:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-11-09 10:46:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 1.2284745762711864) internal successors, (1812), 1475 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1812 transitions. [2021-11-09 10:46:38,435 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1812 transitions. Word has length 242 [2021-11-09 10:46:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:38,435 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1812 transitions. [2021-11-09 10:46:38,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1812 transitions. [2021-11-09 10:46:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-09 10:46:38,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:38,443 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:38,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-09 10:46:38,443 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash -309535968, now seen corresponding path program 1 times [2021-11-09 10:46:38,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:38,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460928554] [2021-11-09 10:46:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:38,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-09 10:46:38,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:38,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460928554] [2021-11-09 10:46:38,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460928554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:38,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:38,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:46:38,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186962045] [2021-11-09 10:46:38,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:46:38,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:46:38,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:46:38,571 INFO L87 Difference]: Start difference. First operand 1476 states and 1812 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:39,274 INFO L93 Difference]: Finished difference Result 3807 states and 4681 transitions. [2021-11-09 10:46:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 10:46:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 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 245 [2021-11-09 10:46:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:39,296 INFO L225 Difference]: With dead ends: 3807 [2021-11-09 10:46:39,296 INFO L226 Difference]: Without dead ends: 2901 [2021-11-09 10:46:39,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:46:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-11-09 10:46:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1500. [2021-11-09 10:46:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 1.227484989993329) internal successors, (1840), 1499 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1840 transitions. [2021-11-09 10:46:39,481 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1840 transitions. Word has length 245 [2021-11-09 10:46:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:39,482 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1840 transitions. [2021-11-09 10:46:39,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1840 transitions. [2021-11-09 10:46:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-09 10:46:39,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:39,487 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:39,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-09 10:46:39,487 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1855751196, now seen corresponding path program 2 times [2021-11-09 10:46:39,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:39,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446786760] [2021-11-09 10:46:39,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:39,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-09 10:46:39,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:39,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446786760] [2021-11-09 10:46:39,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446786760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:39,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:39,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:39,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778305560] [2021-11-09 10:46:39,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:39,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:39,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:39,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:39,606 INFO L87 Difference]: Start difference. First operand 1500 states and 1840 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:39,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:39,967 INFO L93 Difference]: Finished difference Result 2643 states and 3236 transitions. [2021-11-09 10:46:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 245 [2021-11-09 10:46:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:39,979 INFO L225 Difference]: With dead ends: 2643 [2021-11-09 10:46:39,980 INFO L226 Difference]: Without dead ends: 1639 [2021-11-09 10:46:39,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-09 10:46:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1500. [2021-11-09 10:46:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 1.220146764509673) internal successors, (1829), 1499 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1829 transitions. [2021-11-09 10:46:40,180 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1829 transitions. Word has length 245 [2021-11-09 10:46:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:40,180 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1829 transitions. [2021-11-09 10:46:40,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1829 transitions. [2021-11-09 10:46:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-09 10:46:40,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:40,186 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 10:46:40,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-09 10:46:40,186 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1888334560, now seen corresponding path program 1 times [2021-11-09 10:46:40,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:40,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136918234] [2021-11-09 10:46:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:40,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-09 10:46:40,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:40,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136918234] [2021-11-09 10:46:40,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136918234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:40,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:40,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:40,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891494819] [2021-11-09 10:46:40,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:40,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:40,297 INFO L87 Difference]: Start difference. First operand 1500 states and 1829 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:40,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:40,544 INFO L93 Difference]: Finished difference Result 2619 states and 3205 transitions. [2021-11-09 10:46:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:40,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 245 [2021-11-09 10:46:40,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:40,547 INFO L225 Difference]: With dead ends: 2619 [2021-11-09 10:46:40,547 INFO L226 Difference]: Without dead ends: 1509 [2021-11-09 10:46:40,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-09 10:46:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1506. [2021-11-09 10:46:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.2186046511627906) internal successors, (1834), 1505 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1834 transitions. [2021-11-09 10:46:40,713 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1834 transitions. Word has length 245 [2021-11-09 10:46:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:40,713 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 1834 transitions. [2021-11-09 10:46:40,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1834 transitions. [2021-11-09 10:46:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-09 10:46:40,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:40,718 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:40,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-09 10:46:40,719 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:40,719 INFO L85 PathProgramCache]: Analyzing trace with hash -312223552, now seen corresponding path program 1 times [2021-11-09 10:46:40,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:40,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979199676] [2021-11-09 10:46:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:40,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 25 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:41,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:41,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979199676] [2021-11-09 10:46:41,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979199676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:41,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835631444] [2021-11-09 10:46:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:41,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:41,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:41,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:41,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:46:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:41,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 10:46:41,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-09 10:46:43,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835631444] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:43,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:43,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 26 [2021-11-09 10:46:43,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414627680] [2021-11-09 10:46:43,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-09 10:46:43,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-09 10:46:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-11-09 10:46:43,060 INFO L87 Difference]: Start difference. First operand 1506 states and 1834 transitions. Second operand has 26 states, 26 states have (on average 12.192307692307692) internal successors, (317), 26 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:49,351 INFO L93 Difference]: Finished difference Result 8032 states and 10051 transitions. [2021-11-09 10:46:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-09 10:46:49,352 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.192307692307692) internal successors, (317), 26 states have internal predecessors, (317), 0 states have call successors, (0), 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 246 [2021-11-09 10:46:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:49,367 INFO L225 Difference]: With dead ends: 8032 [2021-11-09 10:46:49,367 INFO L226 Difference]: Without dead ends: 6943 [2021-11-09 10:46:49,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4168 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1651, Invalid=11231, Unknown=0, NotChecked=0, Total=12882 [2021-11-09 10:46:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6943 states. [2021-11-09 10:46:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6943 to 2636. [2021-11-09 10:46:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.2246679316888045) internal successors, (3227), 2635 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3227 transitions. [2021-11-09 10:46:49,713 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3227 transitions. Word has length 246 [2021-11-09 10:46:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:49,714 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3227 transitions. [2021-11-09 10:46:49,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.192307692307692) internal successors, (317), 26 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3227 transitions. [2021-11-09 10:46:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-09 10:46:49,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:49,721 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:49,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:49,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-09 10:46:49,940 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash 229562112, now seen corresponding path program 1 times [2021-11-09 10:46:49,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:49,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691466431] [2021-11-09 10:46:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:49,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-11-09 10:46:50,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:50,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691466431] [2021-11-09 10:46:50,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691466431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:50,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:50,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:50,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939408791] [2021-11-09 10:46:50,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:50,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:50,115 INFO L87 Difference]: Start difference. First operand 2636 states and 3227 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:50,580 INFO L93 Difference]: Finished difference Result 4832 states and 5945 transitions. [2021-11-09 10:46:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 253 [2021-11-09 10:46:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:50,586 INFO L225 Difference]: With dead ends: 4832 [2021-11-09 10:46:50,586 INFO L226 Difference]: Without dead ends: 2636 [2021-11-09 10:46:50,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:46:50,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-11-09 10:46:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2021-11-09 10:46:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.2212523719165085) internal successors, (3218), 2635 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3218 transitions. [2021-11-09 10:46:50,986 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3218 transitions. Word has length 253 [2021-11-09 10:46:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:50,986 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3218 transitions. [2021-11-09 10:46:50,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3218 transitions. [2021-11-09 10:46:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-09 10:46:50,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:50,992 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:50,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-09 10:46:50,993 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1421111372, now seen corresponding path program 1 times [2021-11-09 10:46:50,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:50,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816833855] [2021-11-09 10:46:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:50,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:51,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:51,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816833855] [2021-11-09 10:46:51,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816833855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:51,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816631198] [2021-11-09 10:46:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:51,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:51,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:51,246 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:51,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 10:46:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:51,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-09 10:46:51,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 40 proven. 38 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-09 10:46:53,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816631198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:53,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:53,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2021-11-09 10:46:53,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462036136] [2021-11-09 10:46:53,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-09 10:46:53,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-09 10:46:53,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-09 10:46:53,286 INFO L87 Difference]: Start difference. First operand 2636 states and 3218 transitions. Second operand has 31 states, 31 states have (on average 10.806451612903226) internal successors, (335), 31 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:57,204 INFO L93 Difference]: Finished difference Result 8354 states and 10446 transitions. [2021-11-09 10:46:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-09 10:46:57,205 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.806451612903226) internal successors, (335), 31 states have internal predecessors, (335), 0 states have call successors, (0), 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 253 [2021-11-09 10:46:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:57,219 INFO L225 Difference]: With dead ends: 8354 [2021-11-09 10:46:57,219 INFO L226 Difference]: Without dead ends: 6303 [2021-11-09 10:46:57,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=892, Invalid=6764, Unknown=0, NotChecked=0, Total=7656 [2021-11-09 10:46:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2021-11-09 10:46:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 2636. [2021-11-09 10:46:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.2197343453510436) internal successors, (3214), 2635 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3214 transitions. [2021-11-09 10:46:57,604 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3214 transitions. Word has length 253 [2021-11-09 10:46:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:57,604 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3214 transitions. [2021-11-09 10:46:57,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.806451612903226) internal successors, (335), 31 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:57,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3214 transitions. [2021-11-09 10:46:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:46:57,610 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:57,611 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:57,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:57,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-09 10:46:57,826 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:46:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash -729805429, now seen corresponding path program 1 times [2021-11-09 10:46:57,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:57,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112229473] [2021-11-09 10:46:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:57,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:58,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:58,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112229473] [2021-11-09 10:46:58,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112229473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:58,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180580703] [2021-11-09 10:46:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:58,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:58,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:58,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:58,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 10:46:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:46:59,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:46:59,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180580703] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:59,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:46:59,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8] total 30 [2021-11-09 10:46:59,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684117726] [2021-11-09 10:46:59,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-09 10:46:59,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:59,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-09 10:46:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2021-11-09 10:46:59,864 INFO L87 Difference]: Start difference. First operand 2636 states and 3214 transitions. Second operand has 30 states, 30 states have (on average 12.8) internal successors, (384), 30 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:35,524 INFO L93 Difference]: Finished difference Result 38768 states and 48642 transitions. [2021-11-09 10:47:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 628 states. [2021-11-09 10:47:35,525 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 12.8) internal successors, (384), 30 states have internal predecessors, (384), 0 states have call successors, (0), 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 270 [2021-11-09 10:47:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:35,729 INFO L225 Difference]: With dead ends: 38768 [2021-11-09 10:47:35,735 INFO L226 Difference]: Without dead ends: 36940 [2021-11-09 10:47:35,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 654 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195263 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=26092, Invalid=403588, Unknown=0, NotChecked=0, Total=429680 [2021-11-09 10:47:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36940 states. [2021-11-09 10:47:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36940 to 5441. [2021-11-09 10:47:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5441 states, 5440 states have (on average 1.2268382352941176) internal successors, (6674), 5440 states have internal predecessors, (6674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5441 states to 5441 states and 6674 transitions. [2021-11-09 10:47:37,265 INFO L78 Accepts]: Start accepts. Automaton has 5441 states and 6674 transitions. Word has length 270 [2021-11-09 10:47:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:37,266 INFO L470 AbstractCegarLoop]: Abstraction has 5441 states and 6674 transitions. [2021-11-09 10:47:37,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.8) internal successors, (384), 30 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5441 states and 6674 transitions. [2021-11-09 10:47:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:47:37,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:37,277 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:37,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:47:37,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-09 10:47:37,502 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:47:37,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1998405067, now seen corresponding path program 1 times [2021-11-09 10:47:37,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:37,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891918036] [2021-11-09 10:47:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:37,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 10:47:37,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:37,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891918036] [2021-11-09 10:47:37,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891918036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:37,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:37,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:47:37,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123000570] [2021-11-09 10:47:37,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:47:37,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:47:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:47:37,814 INFO L87 Difference]: Start difference. First operand 5441 states and 6674 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:38,989 INFO L93 Difference]: Finished difference Result 10259 states and 12585 transitions. [2021-11-09 10:47:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:47:38,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 270 [2021-11-09 10:47:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:38,996 INFO L225 Difference]: With dead ends: 10259 [2021-11-09 10:47:38,996 INFO L226 Difference]: Without dead ends: 5600 [2021-11-09 10:47:39,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:47:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-11-09 10:47:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5547. [2021-11-09 10:47:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 5546 states have (on average 1.2217814641182834) internal successors, (6776), 5546 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 6776 transitions. [2021-11-09 10:47:39,907 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 6776 transitions. Word has length 270 [2021-11-09 10:47:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:39,908 INFO L470 AbstractCegarLoop]: Abstraction has 5547 states and 6776 transitions. [2021-11-09 10:47:39,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 6776 transitions. [2021-11-09 10:47:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:47:39,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:39,920 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:39,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-09 10:47:39,921 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:47:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:39,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1362989092, now seen corresponding path program 1 times [2021-11-09 10:47:39,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:39,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140438671] [2021-11-09 10:47:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:39,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-09 10:47:40,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:40,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140438671] [2021-11-09 10:47:40,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140438671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:47:40,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:47:40,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 10:47:40,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392051773] [2021-11-09 10:47:40,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:47:40,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:47:40,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:47:40,102 INFO L87 Difference]: Start difference. First operand 5547 states and 6776 transitions. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:47:43,083 INFO L93 Difference]: Finished difference Result 15936 states and 19687 transitions. [2021-11-09 10:47:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 10:47:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 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 270 [2021-11-09 10:47:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:47:43,097 INFO L225 Difference]: With dead ends: 15936 [2021-11-09 10:47:43,097 INFO L226 Difference]: Without dead ends: 12326 [2021-11-09 10:47:43,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-11-09 10:47:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12326 states. [2021-11-09 10:47:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12326 to 5288. [2021-11-09 10:47:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 1.2252695290334783) internal successors, (6478), 5287 states have internal predecessors, (6478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 6478 transitions. [2021-11-09 10:47:43,999 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 6478 transitions. Word has length 270 [2021-11-09 10:47:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:47:44,000 INFO L470 AbstractCegarLoop]: Abstraction has 5288 states and 6478 transitions. [2021-11-09 10:47:44,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:47:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 6478 transitions. [2021-11-09 10:47:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:47:44,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:47:44,010 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:47:44,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-09 10:47:44,011 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:47:44,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:47:44,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1020780283, now seen corresponding path program 1 times [2021-11-09 10:47:44,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:47:44,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402278306] [2021-11-09 10:47:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:44,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:47:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:47:44,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:47:44,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402278306] [2021-11-09 10:47:44,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402278306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:44,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605848013] [2021-11-09 10:47:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:47:44,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:47:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:47:44,538 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:47:44,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 10:47:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:47:45,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:47:45,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:47:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:47:46,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605848013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:47:46,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:47:46,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 27 [2021-11-09 10:47:46,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854928625] [2021-11-09 10:47:46,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 10:47:46,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:47:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 10:47:46,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-11-09 10:47:46,753 INFO L87 Difference]: Start difference. First operand 5288 states and 6478 transitions. Second operand has 28 states, 28 states have (on average 12.75) internal successors, (357), 27 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:08,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:08,468 INFO L93 Difference]: Finished difference Result 41522 states and 52378 transitions. [2021-11-09 10:48:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2021-11-09 10:48:08,469 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.75) internal successors, (357), 27 states have internal predecessors, (357), 0 states have call successors, (0), 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 270 [2021-11-09 10:48:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:08,511 INFO L225 Difference]: With dead ends: 41522 [2021-11-09 10:48:08,511 INFO L226 Difference]: Without dead ends: 37916 [2021-11-09 10:48:08,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20384 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5915, Invalid=48607, Unknown=0, NotChecked=0, Total=54522 [2021-11-09 10:48:08,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37916 states. [2021-11-09 10:48:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37916 to 8443. [2021-11-09 10:48:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 8442 states have (on average 1.2452025586353945) internal successors, (10512), 8442 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 10512 transitions. [2021-11-09 10:48:10,015 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 10512 transitions. Word has length 270 [2021-11-09 10:48:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:10,016 INFO L470 AbstractCegarLoop]: Abstraction has 8443 states and 10512 transitions. [2021-11-09 10:48:10,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.75) internal successors, (357), 27 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 10512 transitions. [2021-11-09 10:48:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:48:10,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:10,034 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:10,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:10,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-09 10:48:10,240 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:48:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1450438589, now seen corresponding path program 1 times [2021-11-09 10:48:10,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:10,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947915007] [2021-11-09 10:48:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:10,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-09 10:48:10,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:10,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947915007] [2021-11-09 10:48:10,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947915007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:10,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:10,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:48:10,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567073643] [2021-11-09 10:48:10,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:48:10,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:48:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:48:10,398 INFO L87 Difference]: Start difference. First operand 8443 states and 10512 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:11,929 INFO L93 Difference]: Finished difference Result 15682 states and 19564 transitions. [2021-11-09 10:48:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:48:11,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 270 [2021-11-09 10:48:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:11,939 INFO L225 Difference]: With dead ends: 15682 [2021-11-09 10:48:11,939 INFO L226 Difference]: Without dead ends: 8443 [2021-11-09 10:48:11,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:48:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2021-11-09 10:48:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 8443. [2021-11-09 10:48:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 8442 states have (on average 1.2420042643923241) internal successors, (10485), 8442 states have internal predecessors, (10485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 10485 transitions. [2021-11-09 10:48:13,317 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 10485 transitions. Word has length 270 [2021-11-09 10:48:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:13,318 INFO L470 AbstractCegarLoop]: Abstraction has 8443 states and 10485 transitions. [2021-11-09 10:48:13,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 10485 transitions. [2021-11-09 10:48:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:48:13,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:13,335 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:13,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-09 10:48:13,335 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:48:13,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash 130670107, now seen corresponding path program 1 times [2021-11-09 10:48:13,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:13,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633779492] [2021-11-09 10:48:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:13,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:48:13,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:13,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633779492] [2021-11-09 10:48:13,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633779492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:13,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808973038] [2021-11-09 10:48:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:13,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:13,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:13,672 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:13,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 10:48:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:14,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:48:14,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:48:15,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808973038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:15,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:15,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 24 [2021-11-09 10:48:15,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871790842] [2021-11-09 10:48:15,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 10:48:15,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 10:48:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-11-09 10:48:15,735 INFO L87 Difference]: Start difference. First operand 8443 states and 10485 transitions. Second operand has 25 states, 25 states have (on average 14.28) internal successors, (357), 24 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:29,994 INFO L93 Difference]: Finished difference Result 50753 states and 64093 transitions. [2021-11-09 10:48:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-09 10:48:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.28) internal successors, (357), 24 states have internal predecessors, (357), 0 states have call successors, (0), 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 270 [2021-11-09 10:48:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:30,045 INFO L225 Difference]: With dead ends: 50753 [2021-11-09 10:48:30,045 INFO L226 Difference]: Without dead ends: 44950 [2021-11-09 10:48:30,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2881 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1396, Invalid=8504, Unknown=0, NotChecked=0, Total=9900 [2021-11-09 10:48:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44950 states. [2021-11-09 10:48:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44950 to 12423. [2021-11-09 10:48:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12423 states, 12422 states have (on average 1.2410239896957012) internal successors, (15416), 12422 states have internal predecessors, (15416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12423 states to 12423 states and 15416 transitions. [2021-11-09 10:48:32,408 INFO L78 Accepts]: Start accepts. Automaton has 12423 states and 15416 transitions. Word has length 270 [2021-11-09 10:48:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:32,409 INFO L470 AbstractCegarLoop]: Abstraction has 12423 states and 15416 transitions. [2021-11-09 10:48:32,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.28) internal successors, (357), 24 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 12423 states and 15416 transitions. [2021-11-09 10:48:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-09 10:48:32,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:32,426 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:32,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:48:32,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:32,627 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:48:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash 494136605, now seen corresponding path program 1 times [2021-11-09 10:48:32,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:32,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708040581] [2021-11-09 10:48:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:32,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-09 10:48:32,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:32,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708040581] [2021-11-09 10:48:32,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708040581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:48:32,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:48:32,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:48:32,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128234995] [2021-11-09 10:48:32,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:48:32,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:48:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:48:32,731 INFO L87 Difference]: Start difference. First operand 12423 states and 15416 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:48:34,564 INFO L93 Difference]: Finished difference Result 22607 states and 28209 transitions. [2021-11-09 10:48:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:48:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 270 [2021-11-09 10:48:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:48:34,575 INFO L225 Difference]: With dead ends: 22607 [2021-11-09 10:48:34,575 INFO L226 Difference]: Without dead ends: 11165 [2021-11-09 10:48:34,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:48:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11165 states. [2021-11-09 10:48:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11165 to 11165. [2021-11-09 10:48:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11165 states, 11164 states have (on average 1.242565388749552) internal successors, (13872), 11164 states have internal predecessors, (13872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11165 states to 11165 states and 13872 transitions. [2021-11-09 10:48:36,408 INFO L78 Accepts]: Start accepts. Automaton has 11165 states and 13872 transitions. Word has length 270 [2021-11-09 10:48:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:48:36,408 INFO L470 AbstractCegarLoop]: Abstraction has 11165 states and 13872 transitions. [2021-11-09 10:48:36,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:48:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11165 states and 13872 transitions. [2021-11-09 10:48:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-09 10:48:36,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:48:36,418 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:48:36,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-09 10:48:36,418 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:48:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:48:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 751176691, now seen corresponding path program 1 times [2021-11-09 10:48:36,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:48:36,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101557829] [2021-11-09 10:48:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:36,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:48:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:48:36,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:48:36,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101557829] [2021-11-09 10:48:36,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101557829] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:36,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701615489] [2021-11-09 10:48:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:48:36,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:48:36,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:48:36,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:48:36,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 10:48:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:48:37,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:48:37,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:48:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:48:38,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701615489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:48:38,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:48:38,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8] total 30 [2021-11-09 10:48:38,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669036322] [2021-11-09 10:48:38,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-09 10:48:38,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:48:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-09 10:48:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2021-11-09 10:48:38,422 INFO L87 Difference]: Start difference. First operand 11165 states and 13872 transitions. Second operand has 30 states, 30 states have (on average 13.033333333333333) internal successors, (391), 30 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:49:50,844 INFO L93 Difference]: Finished difference Result 186705 states and 235687 transitions. [2021-11-09 10:49:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 480 states. [2021-11-09 10:49:50,845 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 13.033333333333333) internal successors, (391), 30 states have internal predecessors, (391), 0 states have call successors, (0), 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 271 [2021-11-09 10:49:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:49:51,134 INFO L225 Difference]: With dead ends: 186705 [2021-11-09 10:49:51,134 INFO L226 Difference]: Without dead ends: 177015 [2021-11-09 10:49:51,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112853 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=15468, Invalid=242088, Unknown=0, NotChecked=0, Total=257556 [2021-11-09 10:49:51,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177015 states. [2021-11-09 10:49:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177015 to 14396. [2021-11-09 10:49:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14396 states, 14395 states have (on average 1.2319555401180966) internal successors, (17734), 14395 states have internal predecessors, (17734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14396 states to 14396 states and 17734 transitions. [2021-11-09 10:49:56,027 INFO L78 Accepts]: Start accepts. Automaton has 14396 states and 17734 transitions. Word has length 271 [2021-11-09 10:49:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:49:56,028 INFO L470 AbstractCegarLoop]: Abstraction has 14396 states and 17734 transitions. [2021-11-09 10:49:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.033333333333333) internal successors, (391), 30 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:49:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 14396 states and 17734 transitions. [2021-11-09 10:49:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-09 10:49:56,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:49:56,050 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:49:56,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:49:56,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:56,274 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 10:49:56,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:49:56,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1450217823, now seen corresponding path program 1 times [2021-11-09 10:49:56,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:49:56,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930372724] [2021-11-09 10:49:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:56,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:49:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:49:56,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:49:56,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930372724] [2021-11-09 10:49:56,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930372724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:56,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122154236] [2021-11-09 10:49:56,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:49:56,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:49:56,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:49:56,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:49:56,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48a1c20-417b-4596-8811-e465808c6f44/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 10:49:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:49:57,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:49:57,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:49:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 10:49:59,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122154236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:49:59,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:49:59,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8] total 26 [2021-11-09 10:49:59,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386863016] [2021-11-09 10:49:59,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-09 10:49:59,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:49:59,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-09 10:49:59,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2021-11-09 10:49:59,009 INFO L87 Difference]: Start difference. First operand 14396 states and 17734 transitions. Second operand has 27 states, 27 states have (on average 13.296296296296296) internal successors, (359), 26 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)