./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3 --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 149c8585f8a0507ccdc7ff098e5c95b93f9a1ba8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:46:44,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:46:44,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:46:44,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:46:44,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:46:44,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:46:44,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:46:44,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:46:44,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:46:44,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:46:44,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:46:44,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:46:44,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:46:44,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:46:44,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:46:44,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:46:44,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:46:44,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:46:44,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:46:44,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:46:44,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:46:44,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:46:44,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:46:44,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:46:44,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:46:44,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:46:44,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:46:44,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:46:44,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:46:44,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:46:44,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:46:44,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:46:44,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:46:44,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:46:44,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:46:44,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:46:44,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:46:44,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:46:44,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:46:44,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:46:44,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:46:44,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:46:44,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:46:44,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:46:44,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:46:44,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:46:44,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:46:44,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:46:44,306 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:46:44,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:46:44,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:46:44,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:46:44,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:46:44,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:46:44,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:46:44,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:46:44,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:46:44,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:46:44,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:46:44,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:46:44,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:46:44,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:46:44,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:46:44,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:46:44,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:46:44,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:46:44,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:46:44,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:46:44,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:46:44,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:46:44,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:46:44,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:46:44,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:46:44,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:46:44,315 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_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 149c8585f8a0507ccdc7ff098e5c95b93f9a1ba8 [2021-10-15 19:46:44,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:46:44,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:46:44,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:46:44,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:46:44,636 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:46:44,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-10-15 19:46:44,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/data/7ba22d8c6/2808650ec4504d329a49c58279f07638/FLAG1c5ed73ec [2021-10-15 19:46:45,300 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:46:45,303 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-10-15 19:46:45,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/data/7ba22d8c6/2808650ec4504d329a49c58279f07638/FLAG1c5ed73ec [2021-10-15 19:46:45,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/data/7ba22d8c6/2808650ec4504d329a49c58279f07638 [2021-10-15 19:46:45,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:46:45,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:46:45,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:46:45,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:46:45,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:46:45,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:46:45" (1/1) ... [2021-10-15 19:46:45,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2291e3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:45, skipping insertion in model container [2021-10-15 19:46:45,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:46:45" (1/1) ... [2021-10-15 19:46:45,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:46:45,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:46:45,915 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_f3625dee-990e-402b-b568-6cc797c1defc/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2021-10-15 19:46:45,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:46:45,957 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:46:45,976 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_f3625dee-990e-402b-b568-6cc797c1defc/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2021-10-15 19:46:46,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:46:46,030 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:46:46,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46 WrapperNode [2021-10-15 19:46:46,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:46:46,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:46:46,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:46:46,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:46:46,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:46:46,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:46:46,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:46:46,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:46:46,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:46:46,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:46:46,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:46:46,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:46:46,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (1/1) ... [2021-10-15 19:46:46,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:46:46,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:46,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:46:46,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:46:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:46:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:46:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:46:46,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:46:46,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:46:46,616 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-15 19:46:46,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:46 BoogieIcfgContainer [2021-10-15 19:46:46,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:46:46,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:46:46,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:46:46,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:46:46,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:46:45" (1/3) ... [2021-10-15 19:46:46,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c15aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:46:46, skipping insertion in model container [2021-10-15 19:46:46,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:46" (2/3) ... [2021-10-15 19:46:46,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c15aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:46:46, skipping insertion in model container [2021-10-15 19:46:46,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:46" (3/3) ... [2021-10-15 19:46:46,644 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2021-10-15 19:46:46,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:46:46,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-15 19:46:46,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:46:46,703 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, mConcurrency=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 [2021-10-15 19:46:46,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-15 19:46:46,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 58 transitions, 116 flow [2021-10-15 19:46:46,744 INFO L129 PetriNetUnfolder]: 16/58 cut-off events. [2021-10-15 19:46:46,744 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:46,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 58 events. 16/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:46:46,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 58 transitions, 116 flow [2021-10-15 19:46:46,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 53 transitions, 106 flow [2021-10-15 19:46:46,757 INFO L129 PetriNetUnfolder]: 9/27 cut-off events. [2021-10-15 19:46:46,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:46,758 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:46,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:46,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:46,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1280619883, now seen corresponding path program 1 times [2021-10-15 19:46:46,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:46,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8999075] [2021-10-15 19:46:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:46,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:46,874 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:46,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204478415] [2021-10-15 19:46:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:46,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:46,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:46,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:46,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:46:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:46,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:46:46,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:47,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:47,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8999075] [2021-10-15 19:46:47,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:47,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204478415] [2021-10-15 19:46:47,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204478415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:47,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:47,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:46:47,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427884577] [2021-10-15 19:46:47,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:46:47,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:46:47,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:46:47,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 58 [2021-10-15 19:46:47,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 53 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:47,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 58 [2021-10-15 19:46:47,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:47,085 INFO L129 PetriNetUnfolder]: 4/42 cut-off events. [2021-10-15 19:46:47,085 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:47,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 42 events. 4/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 11/44 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-10-15 19:46:47,089 INFO L132 encePairwiseOnDemand]: 47/58 looper letters, 0 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2021-10-15 19:46:47,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 84 flow [2021-10-15 19:46:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:46:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:46:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 103 transitions. [2021-10-15 19:46:47,101 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8879310344827587 [2021-10-15 19:46:47,102 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 103 transitions. [2021-10-15 19:46:47,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 103 transitions. [2021-10-15 19:46:47,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:47,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 103 transitions. [2021-10-15 19:46:47,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 51.5) internal successors, (103), 2 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) [2021-10-15 19:46:47,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,119 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,121 INFO L186 Difference]: Start difference. First operand has 39 places, 53 transitions, 106 flow. Second operand 2 states and 103 transitions. [2021-10-15 19:46:47,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 84 flow [2021-10-15 19:46:47,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:46:47,129 INFO L242 Difference]: Finished difference. Result has 40 places, 42 transitions, 84 flow [2021-10-15 19:46:47,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2021-10-15 19:46:47,132 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2021-10-15 19:46:47,132 INFO L470 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 84 flow [2021-10-15 19:46:47,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,133 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:47,134 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:47,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-15 19:46:47,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:47,345 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1057770534, now seen corresponding path program 1 times [2021-10-15 19:46:47,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:47,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101198335] [2021-10-15 19:46:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:47,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:47,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:47,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972435517] [2021-10-15 19:46:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:47,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:47,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:47,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:47,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:46:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:47,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:46:47,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:47,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:47,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101198335] [2021-10-15 19:46:47,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:47,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972435517] [2021-10-15 19:46:47,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972435517] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:47,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:47,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:46:47,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054469783] [2021-10-15 19:46:47,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:46:47,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:47,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:46:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:46:47,605 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 58 [2021-10-15 19:46:47,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:47,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 58 [2021-10-15 19:46:47,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:47,629 INFO L129 PetriNetUnfolder]: 4/44 cut-off events. [2021-10-15 19:46:47,629 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:47,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 44 events. 4/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2021-10-15 19:46:47,630 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 5 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2021-10-15 19:46:47,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 104 flow [2021-10-15 19:46:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:46:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:46:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2021-10-15 19:46:47,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.728448275862069 [2021-10-15 19:46:47,634 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 169 transitions. [2021-10-15 19:46:47,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 169 transitions. [2021-10-15 19:46:47,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:47,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 169 transitions. [2021-10-15 19:46:47,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,639 INFO L186 Difference]: Start difference. First operand has 40 places, 42 transitions, 84 flow. Second operand 4 states and 169 transitions. [2021-10-15 19:46:47,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 104 flow [2021-10-15 19:46:47,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:46:47,643 INFO L242 Difference]: Finished difference. Result has 45 places, 44 transitions, 104 flow [2021-10-15 19:46:47,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2021-10-15 19:46:47,643 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2021-10-15 19:46:47,644 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 104 flow [2021-10-15 19:46:47,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:47,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:47,644 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:47,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:47,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:47,873 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:47,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1568670238, now seen corresponding path program 1 times [2021-10-15 19:46:47,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:47,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548903881] [2021-10-15 19:46:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:47,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:47,885 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:47,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531568224] [2021-10-15 19:46:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:47,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:47,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:47,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:47,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:46:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:47,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:46:47,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:48,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:48,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548903881] [2021-10-15 19:46:48,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:48,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531568224] [2021-10-15 19:46:48,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531568224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:48,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:48,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:46:48,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49881698] [2021-10-15 19:46:48,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:46:48,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:46:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:46:48,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2021-10-15 19:46:48,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:48,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2021-10-15 19:46:48,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:48,251 INFO L129 PetriNetUnfolder]: 6/66 cut-off events. [2021-10-15 19:46:48,252 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:46:48,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 66 events. 6/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 101. Up to 12 conditions per place. [2021-10-15 19:46:48,257 INFO L132 encePairwiseOnDemand]: 53/58 looper letters, 23 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2021-10-15 19:46:48,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 174 flow [2021-10-15 19:46:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:46:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:46:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2021-10-15 19:46:48,263 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2021-10-15 19:46:48,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2021-10-15 19:46:48,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2021-10-15 19:46:48,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:48,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2021-10-15 19:46:48,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,271 INFO L186 Difference]: Start difference. First operand has 45 places, 44 transitions, 104 flow. Second operand 6 states and 190 transitions. [2021-10-15 19:46:48,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 174 flow [2021-10-15 19:46:48,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:46:48,277 INFO L242 Difference]: Finished difference. Result has 50 places, 45 transitions, 118 flow [2021-10-15 19:46:48,277 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2021-10-15 19:46:48,278 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2021-10-15 19:46:48,278 INFO L470 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 118 flow [2021-10-15 19:46:48,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,278 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:48,278 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:48,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:48,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:48,493 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:48,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1384108475, now seen corresponding path program 1 times [2021-10-15 19:46:48,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:48,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906337325] [2021-10-15 19:46:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:48,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:48,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:48,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287022110] [2021-10-15 19:46:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:48,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:48,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:48,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:48,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 19:46:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:48,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 19:46:48,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:48,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:48,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906337325] [2021-10-15 19:46:48,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:48,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287022110] [2021-10-15 19:46:48,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287022110] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:48,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:48,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:46:48,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231819274] [2021-10-15 19:46:48,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:46:48,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:46:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:46:48,730 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2021-10-15 19:46:48,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:48,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2021-10-15 19:46:48,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:48,876 INFO L129 PetriNetUnfolder]: 8/85 cut-off events. [2021-10-15 19:46:48,876 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-10-15 19:46:48,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 85 events. 8/85 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 172 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 161. Up to 24 conditions per place. [2021-10-15 19:46:48,878 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2021-10-15 19:46:48,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 299 flow [2021-10-15 19:46:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:46:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:46:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2021-10-15 19:46:48,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3728448275862069 [2021-10-15 19:46:48,880 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 173 transitions. [2021-10-15 19:46:48,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 173 transitions. [2021-10-15 19:46:48,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:48,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 173 transitions. [2021-10-15 19:46:48,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,884 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,884 INFO L186 Difference]: Start difference. First operand has 50 places, 45 transitions, 118 flow. Second operand 8 states and 173 transitions. [2021-10-15 19:46:48,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 299 flow [2021-10-15 19:46:48,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:46:48,891 INFO L242 Difference]: Finished difference. Result has 57 places, 50 transitions, 165 flow [2021-10-15 19:46:48,891 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=165, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2021-10-15 19:46:48,891 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2021-10-15 19:46:48,892 INFO L470 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 165 flow [2021-10-15 19:46:48,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:48,892 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:48,892 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:48,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:49,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:49,101 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1311460386, now seen corresponding path program 1 times [2021-10-15 19:46:49,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:49,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573212387] [2021-10-15 19:46:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:49,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:49,116 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:49,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730588611] [2021-10-15 19:46:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:49,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:49,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:49,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:49,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-15 19:46:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:49,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:46:49,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:49,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:49,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573212387] [2021-10-15 19:46:49,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:49,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730588611] [2021-10-15 19:46:49,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730588611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:49,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:49,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:46:49,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036176475] [2021-10-15 19:46:49,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:46:49,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:49,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:46:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:46:49,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 58 [2021-10-15 19:46:49,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:49,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 58 [2021-10-15 19:46:49,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:49,489 INFO L129 PetriNetUnfolder]: 8/81 cut-off events. [2021-10-15 19:46:49,489 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-10-15 19:46:49,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 81 events. 8/81 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 159 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 164. Up to 23 conditions per place. [2021-10-15 19:46:49,494 INFO L132 encePairwiseOnDemand]: 53/58 looper letters, 31 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2021-10-15 19:46:49,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 267 flow [2021-10-15 19:46:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:46:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:46:49,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2021-10-15 19:46:49,496 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2021-10-15 19:46:49,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 127 transitions. [2021-10-15 19:46:49,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 127 transitions. [2021-10-15 19:46:49,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:49,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 127 transitions. [2021-10-15 19:46:49,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,500 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,501 INFO L186 Difference]: Start difference. First operand has 57 places, 50 transitions, 165 flow. Second operand 4 states and 127 transitions. [2021-10-15 19:46:49,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 267 flow [2021-10-15 19:46:49,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 259 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:46:49,506 INFO L242 Difference]: Finished difference. Result has 58 places, 52 transitions, 190 flow [2021-10-15 19:46:49,507 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2021-10-15 19:46:49,507 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2021-10-15 19:46:49,507 INFO L470 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 190 flow [2021-10-15 19:46:49,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:49,508 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:49,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:49,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:49,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:49,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1862118746, now seen corresponding path program 1 times [2021-10-15 19:46:49,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:49,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781228810] [2021-10-15 19:46:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:49,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:49,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:49,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138859267] [2021-10-15 19:46:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:49,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:49,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:49,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-15 19:46:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:49,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:46:49,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:49,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:49,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781228810] [2021-10-15 19:46:49,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:49,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138859267] [2021-10-15 19:46:49,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138859267] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:49,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:49,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:46:49,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147993506] [2021-10-15 19:46:49,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:46:49,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:46:49,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:46:49,919 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 58 [2021-10-15 19:46:49,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:49,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 58 [2021-10-15 19:46:49,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:49,962 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2021-10-15 19:46:49,962 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-10-15 19:46:49,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 80 events. 7/80 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 143. Up to 9 conditions per place. [2021-10-15 19:46:49,964 INFO L132 encePairwiseOnDemand]: 53/58 looper letters, 5 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2021-10-15 19:46:49,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 210 flow [2021-10-15 19:46:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:46:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:46:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2021-10-15 19:46:49,966 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2021-10-15 19:46:49,966 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 210 transitions. [2021-10-15 19:46:49,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 210 transitions. [2021-10-15 19:46:49,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:49,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 210 transitions. [2021-10-15 19:46:49,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,969 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,969 INFO L186 Difference]: Start difference. First operand has 58 places, 52 transitions, 190 flow. Second operand 5 states and 210 transitions. [2021-10-15 19:46:49,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 210 flow [2021-10-15 19:46:49,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:46:49,973 INFO L242 Difference]: Finished difference. Result has 63 places, 53 transitions, 205 flow [2021-10-15 19:46:49,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2021-10-15 19:46:49,973 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2021-10-15 19:46:49,974 INFO L470 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 205 flow [2021-10-15 19:46:49,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:49,974 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:49,974 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:50,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:50,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-15 19:46:50,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:50,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1887855967, now seen corresponding path program 1 times [2021-10-15 19:46:50,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:50,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867440950] [2021-10-15 19:46:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:50,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:50,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:50,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37914977] [2021-10-15 19:46:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:50,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:50,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:50,219 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:50,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-15 19:46:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:50,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 19:46:50,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:50,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:50,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867440950] [2021-10-15 19:46:50,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:50,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37914977] [2021-10-15 19:46:50,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37914977] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:50,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:50,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:46:50,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996490517] [2021-10-15 19:46:50,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:46:50,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:46:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:46:50,626 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2021-10-15 19:46:50,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2021-10-15 19:46:50,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:50,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2021-10-15 19:46:50,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:50,736 INFO L129 PetriNetUnfolder]: 7/76 cut-off events. [2021-10-15 19:46:50,736 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-10-15 19:46:50,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 76 events. 7/76 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 191. Up to 26 conditions per place. [2021-10-15 19:46:50,738 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 40 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2021-10-15 19:46:50,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 327 flow [2021-10-15 19:46:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:46:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:46:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2021-10-15 19:46:50,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3694581280788177 [2021-10-15 19:46:50,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 150 transitions. [2021-10-15 19:46:50,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 150 transitions. [2021-10-15 19:46:50,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:50,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 150 transitions. [2021-10-15 19:46:50,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:50,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:50,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:50,744 INFO L186 Difference]: Start difference. First operand has 63 places, 53 transitions, 205 flow. Second operand 7 states and 150 transitions. [2021-10-15 19:46:50,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 327 flow [2021-10-15 19:46:50,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 323 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:46:50,752 INFO L242 Difference]: Finished difference. Result has 68 places, 54 transitions, 225 flow [2021-10-15 19:46:50,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2021-10-15 19:46:50,752 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2021-10-15 19:46:50,752 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 225 flow [2021-10-15 19:46:50,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2021-10-15 19:46:50,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:50,753 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:50,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:50,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:50,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1753227772, now seen corresponding path program 1 times [2021-10-15 19:46:50,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:50,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79023381] [2021-10-15 19:46:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:50,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:50,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:50,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690006478] [2021-10-15 19:46:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:50,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:50,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:50,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:51,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-15 19:46:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:51,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-15 19:46:51,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:51,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:51,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79023381] [2021-10-15 19:46:51,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:51,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690006478] [2021-10-15 19:46:51,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690006478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:51,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:51,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:46:51,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7045627] [2021-10-15 19:46:51,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:46:51,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:46:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:46:51,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2021-10-15 19:46:51,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:51,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:51,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2021-10-15 19:46:51,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:51,506 INFO L129 PetriNetUnfolder]: 10/82 cut-off events. [2021-10-15 19:46:51,506 INFO L130 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2021-10-15 19:46:51,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 82 events. 10/82 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 217. Up to 27 conditions per place. [2021-10-15 19:46:51,508 INFO L132 encePairwiseOnDemand]: 52/58 looper letters, 41 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2021-10-15 19:46:51,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 361 flow [2021-10-15 19:46:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:46:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:46:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2021-10-15 19:46:51,511 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4862068965517241 [2021-10-15 19:46:51,511 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 141 transitions. [2021-10-15 19:46:51,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 141 transitions. [2021-10-15 19:46:51,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:51,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 141 transitions. [2021-10-15 19:46:51,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:51,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:51,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:51,514 INFO L186 Difference]: Start difference. First operand has 68 places, 54 transitions, 225 flow. Second operand 5 states and 141 transitions. [2021-10-15 19:46:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 361 flow [2021-10-15 19:46:51,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 352 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:46:51,522 INFO L242 Difference]: Finished difference. Result has 70 places, 57 transitions, 254 flow [2021-10-15 19:46:51,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2021-10-15 19:46:51,523 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2021-10-15 19:46:51,523 INFO L470 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 254 flow [2021-10-15 19:46:51,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:51,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:51,523 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:51,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:51,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:51,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:51,745 INFO L82 PathProgramCache]: Analyzing trace with hash 29719088, now seen corresponding path program 1 times [2021-10-15 19:46:51,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:51,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880582711] [2021-10-15 19:46:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:51,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:51,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:51,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195658838] [2021-10-15 19:46:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:51,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:51,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:51,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:51,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-15 19:46:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:51,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:46:51,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:51,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:51,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880582711] [2021-10-15 19:46:51,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:51,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195658838] [2021-10-15 19:46:51,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195658838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:46:51,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:46:51,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-15 19:46:51,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053678148] [2021-10-15 19:46:51,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:46:51,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:46:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:46:51,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 58 [2021-10-15 19:46:51,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:51,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:51,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 58 [2021-10-15 19:46:51,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:52,019 INFO L129 PetriNetUnfolder]: 3/42 cut-off events. [2021-10-15 19:46:52,019 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2021-10-15 19:46:52,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 42 events. 3/42 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 2/42 useless extension candidates. Maximal degree in co-relation 106. Up to 5 conditions per place. [2021-10-15 19:46:52,020 INFO L132 encePairwiseOnDemand]: 53/58 looper letters, 3 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2021-10-15 19:46:52,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 40 transitions, 196 flow [2021-10-15 19:46:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:46:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:46:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2021-10-15 19:46:52,022 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7155172413793104 [2021-10-15 19:46:52,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 249 transitions. [2021-10-15 19:46:52,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 249 transitions. [2021-10-15 19:46:52,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:52,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 249 transitions. [2021-10-15 19:46:52,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:52,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:52,025 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:52,025 INFO L186 Difference]: Start difference. First operand has 70 places, 57 transitions, 254 flow. Second operand 6 states and 249 transitions. [2021-10-15 19:46:52,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 40 transitions, 196 flow [2021-10-15 19:46:52,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 40 transitions, 156 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-10-15 19:46:52,027 INFO L242 Difference]: Finished difference. Result has 53 places, 40 transitions, 150 flow [2021-10-15 19:46:52,028 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2021-10-15 19:46:52,028 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2021-10-15 19:46:52,028 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 150 flow [2021-10-15 19:46:52,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:46:52,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:52,029 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:52,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:52,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:52,242 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-15 19:46:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:52,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1666886870, now seen corresponding path program 1 times [2021-10-15 19:46:52,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:52,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996134502] [2021-10-15 19:46:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:52,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:52,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:52,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504906047] [2021-10-15 19:46:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:52,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:52,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:52,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:52,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-15 19:46:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:46:52,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:46:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:46:52,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:46:52,486 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:46:52,487 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:52,489 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:52,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:52,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:52,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:52,493 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:52,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:52,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:52,719 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:46:52,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:46:52 BoogieIcfgContainer [2021-10-15 19:46:52,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:46:52,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:46:52,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:46:52,770 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:46:52,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:46" (3/4) ... [2021-10-15 19:46:52,773 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:46:52,843 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:46:52,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:46:52,848 INFO L168 Benchmark]: Toolchain (without parser) took 7186.00 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 64.3 MB in the beginning and 50.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:52,848 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 55.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:46:52,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.33 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 64.0 MB in the beginning and 105.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:52,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.48 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 103.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:52,850 INFO L168 Benchmark]: Boogie Preprocessor took 52.87 ms. Allocated memory is still 132.1 MB. Free memory was 103.9 MB in the beginning and 102.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:46:52,850 INFO L168 Benchmark]: RCFGBuilder took 470.09 ms. Allocated memory is still 132.1 MB. Free memory was 102.8 MB in the beginning and 90.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:52,850 INFO L168 Benchmark]: TraceAbstraction took 6146.35 ms. Allocated memory is still 132.1 MB. Free memory was 90.2 MB in the beginning and 53.3 MB in the end (delta: 36.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:52,851 INFO L168 Benchmark]: Witness Printer took 76.35 ms. Allocated memory is still 132.1 MB. Free memory was 53.3 MB in the beginning and 50.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:52,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 55.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.33 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 64.0 MB in the beginning and 105.9 MB in the end (delta: -41.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.48 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 103.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.87 ms. Allocated memory is still 132.1 MB. Free memory was 103.9 MB in the beginning and 102.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 470.09 ms. Allocated memory is still 132.1 MB. Free memory was 102.8 MB in the beginning and 90.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6146.35 ms. Allocated memory is still 132.1 MB. Free memory was 90.2 MB in the beginning and 53.3 MB in the end (delta: 36.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Witness Printer took 76.35 ms. Allocated memory is still 132.1 MB. Free memory was 53.3 MB in the beginning and 50.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L40] EXPR counter++ VAL [counter=1] [L40] COND TRUE counter++<2 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [counter=1] [L46] EXPR counter++ VAL [counter=2] [L46] COND TRUE counter++<2 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L51] COND TRUE !(c >= b) VAL [counter=2] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [counter=2] [L40] EXPR counter++ VAL [counter=3] [L40] COND FALSE !(counter++<2) [L11] COND TRUE !(cond) VAL [counter=3] [L13] reach_error() VAL [counter=3] - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6024.2ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 874.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 161 SDslu, 131 SDs, 0 SdLazy, 319 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 277.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 234.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=8, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 94.5ms SsaConstructionTime, 228.1ms SatisfiabilityAnalysisTime, 1428.2ms InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 782 SizeOfPredicates, 38 NumberOfNonLiveVariables, 974 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-15 19:46:52,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3625dee-990e-402b-b568-6cc797c1defc/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...