./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD --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 77987d39218daa3d8ca19fe9337f6493b276d704fa95c2d6fb7800ec30efdcea ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 00:04:24,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:04:24,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:04:25,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:04:25,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:04:25,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:04:25,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:04:25,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:04:25,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:04:25,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:04:25,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:04:25,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:04:25,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:04:25,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:04:25,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:04:25,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:04:25,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:04:25,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:04:25,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:04:25,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:04:25,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:04:25,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:04:25,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:04:25,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:04:25,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:04:25,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:04:25,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:04:25,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:04:25,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:04:25,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:04:25,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:04:25,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:04:25,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:04:25,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:04:25,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:04:25,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:04:25,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:04:25,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:04:25,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:04:25,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:04:25,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:04:25,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-29 00:04:25,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:04:25,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:04:25,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:04:25,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:04:25,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:04:25,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:04:25,151 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:04:25,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:04:25,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 00:04:25,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:04:25,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 00:04:25,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:04:25,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 00:04:25,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 00:04:25,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 00:04:25,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 00:04:25,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:04:25,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:04:25,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 00:04:25,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:04:25,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:04:25,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 00:04:25,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:04:25,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:04:25,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 00:04:25,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 00:04:25,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:04:25,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 00:04:25,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-29 00:04:25,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-29 00:04:25,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 00:04:25,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:04:25,156 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_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77987d39218daa3d8ca19fe9337f6493b276d704fa95c2d6fb7800ec30efdcea [2021-10-29 00:04:25,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:04:25,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:04:25,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:04:25,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:04:25,584 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:04:25,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2021-10-29 00:04:25,676 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/data/b240fa657/e23fb1b598394e8782f52c8c06c37b5e/FLAG5fd425926 [2021-10-29 00:04:26,293 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:04:26,294 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c [2021-10-29 00:04:26,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/data/b240fa657/e23fb1b598394e8782f52c8c06c37b5e/FLAG5fd425926 [2021-10-29 00:04:26,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/data/b240fa657/e23fb1b598394e8782f52c8c06c37b5e [2021-10-29 00:04:26,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:04:26,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:04:26,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:04:26,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:04:26,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:04:26,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:26,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c85d0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26, skipping insertion in model container [2021-10-29 00:04:26,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:26,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:04:26,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:04:26,870 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_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c[489,502] [2021-10-29 00:04:26,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:04:26,899 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:04:26,911 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_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound5.c[489,502] [2021-10-29 00:04:26,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:04:26,937 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:04:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26 WrapperNode [2021-10-29 00:04:26,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:04:26,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:04:26,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:04:26,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:04:26,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:26,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:26,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:04:26,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:04:26,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:04:26,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:04:26,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:26,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:27,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:27,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:27,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:27,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:27,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:27,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:04:27,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:04:27,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:04:27,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:04:27,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (1/1) ... [2021-10-29 00:04:27,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:04:27,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:27,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:04:27,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:04:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 00:04:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:04:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:04:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:04:27,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:04:27,380 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-29 00:04:27,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:04:27 BoogieIcfgContainer [2021-10-29 00:04:27,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:04:27,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:04:27,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:04:27,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:04:27,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:04:26" (1/3) ... [2021-10-29 00:04:27,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7f7618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:04:27, skipping insertion in model container [2021-10-29 00:04:27,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:04:26" (2/3) ... [2021-10-29 00:04:27,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7f7618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:04:27, skipping insertion in model container [2021-10-29 00:04:27,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:04:27" (3/3) ... [2021-10-29 00:04:27,401 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound5.c [2021-10-29 00:04:27,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:04:27,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 00:04:27,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:04:27,477 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 00:04:27,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 00:04:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.606060606060606) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 00:04:27,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:27,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:27,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-10-29 00:04:27,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:27,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726232135] [2021-10-29 00:04:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:27,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:27,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:27,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726232135] [2021-10-29 00:04:27,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726232135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:04:27,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:04:27,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 00:04:27,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280219996] [2021-10-29 00:04:27,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 00:04:27,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 00:04:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:04:27,795 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.606060606060606) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:27,819 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2021-10-29 00:04:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 00:04:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 00:04:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:27,833 INFO L225 Difference]: With dead ends: 79 [2021-10-29 00:04:27,833 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 00:04:27,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 00:04:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 00:04:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-29 00:04:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-29 00:04:27,880 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2021-10-29 00:04:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:27,881 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-29 00:04:27,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-29 00:04:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 00:04:27,883 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:27,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:27,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 00:04:27,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-10-29 00:04:27,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:27,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779120942] [2021-10-29 00:04:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:27,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:27,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:27,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859593967] [2021-10-29 00:04:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:27,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:27,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:27,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:27,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 00:04:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:28,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:04:28,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:28,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:28,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779120942] [2021-10-29 00:04:28,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:28,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859593967] [2021-10-29 00:04:28,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859593967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:04:28,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:04:28,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 00:04:28,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739330717] [2021-10-29 00:04:28,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:04:28,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:28,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:04:28,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:04:28,235 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:28,346 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-10-29 00:04:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:04:28,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 00:04:28,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:28,349 INFO L225 Difference]: With dead ends: 68 [2021-10-29 00:04:28,349 INFO L226 Difference]: Without dead ends: 64 [2021-10-29 00:04:28,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:04:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-29 00:04:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-10-29 00:04:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-10-29 00:04:28,362 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2021-10-29 00:04:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:28,363 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-10-29 00:04:28,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-10-29 00:04:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 00:04:28,364 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:28,364 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:28,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:28,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:28,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:28,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2021-10-29 00:04:28,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:28,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059907607] [2021-10-29 00:04:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:28,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:28,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:28,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059907607] [2021-10-29 00:04:28,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059907607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:04:28,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:04:28,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:04:28,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976528465] [2021-10-29 00:04:28,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:04:28,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:04:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:04:28,673 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:28,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:28,692 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-10-29 00:04:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:04:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 00:04:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:28,694 INFO L225 Difference]: With dead ends: 68 [2021-10-29 00:04:28,694 INFO L226 Difference]: Without dead ends: 54 [2021-10-29 00:04:28,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:04:28,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-29 00:04:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-29 00:04:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-10-29 00:04:28,709 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2021-10-29 00:04:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:28,709 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-10-29 00:04:28,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-10-29 00:04:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 00:04:28,712 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:28,712 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:28,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 00:04:28,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2021-10-29 00:04:28,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:28,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169579442] [2021-10-29 00:04:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:28,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:28,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:28,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423300371] [2021-10-29 00:04:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:28,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:28,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:28,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 00:04:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:28,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:04:28,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:29,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:29,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169579442] [2021-10-29 00:04:29,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:29,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423300371] [2021-10-29 00:04:29,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423300371] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:04:29,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:04:29,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-29 00:04:29,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109182817] [2021-10-29 00:04:29,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:04:29,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:29,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:04:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:04:29,197 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:29,438 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-10-29 00:04:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:04:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 00:04:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:29,440 INFO L225 Difference]: With dead ends: 66 [2021-10-29 00:04:29,441 INFO L226 Difference]: Without dead ends: 64 [2021-10-29 00:04:29,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:04:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-29 00:04:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-10-29 00:04:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-10-29 00:04:29,451 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 12 [2021-10-29 00:04:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:29,452 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-10-29 00:04:29,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-10-29 00:04:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 00:04:29,453 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:29,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:29,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:29,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-29 00:04:29,679 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2021-10-29 00:04:29,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:29,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796810688] [2021-10-29 00:04:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:29,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:29,712 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:29,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325339779] [2021-10-29 00:04:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:29,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:29,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:29,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:29,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 00:04:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:29,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 00:04:29,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:30,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:30,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796810688] [2021-10-29 00:04:30,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:30,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325339779] [2021-10-29 00:04:30,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325339779] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:04:30,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:04:30,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 00:04:30,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435251992] [2021-10-29 00:04:30,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:04:30,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:30,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:04:30,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:30,110 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:30,273 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2021-10-29 00:04:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:04:30,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 00:04:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:30,284 INFO L225 Difference]: With dead ends: 104 [2021-10-29 00:04:30,284 INFO L226 Difference]: Without dead ends: 96 [2021-10-29 00:04:30,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-29 00:04:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 80. [2021-10-29 00:04:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 79 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2021-10-29 00:04:30,302 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 14 [2021-10-29 00:04:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:30,303 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-10-29 00:04:30,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2021-10-29 00:04:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 00:04:30,304 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:30,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:30,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:30,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:30,524 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:30,525 INFO L85 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2021-10-29 00:04:30,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:30,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684886238] [2021-10-29 00:04:30,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:30,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:30,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:30,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674748714] [2021-10-29 00:04:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:30,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:30,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:30,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:30,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 00:04:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:30,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:04:30,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:30,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:30,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684886238] [2021-10-29 00:04:30,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:30,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674748714] [2021-10-29 00:04:30,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674748714] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:04:30,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:04:30,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 00:04:30,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472721399] [2021-10-29 00:04:30,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:04:30,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:04:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:04:30,759 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:30,839 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2021-10-29 00:04:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:04:30,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 00:04:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:30,843 INFO L225 Difference]: With dead ends: 108 [2021-10-29 00:04:30,843 INFO L226 Difference]: Without dead ends: 106 [2021-10-29 00:04:30,844 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:04:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-29 00:04:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 86. [2021-10-29 00:04:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 85 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) [2021-10-29 00:04:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2021-10-29 00:04:30,858 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 17 [2021-10-29 00:04:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:30,858 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2021-10-29 00:04:30,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2021-10-29 00:04:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:04:30,860 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:30,860 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:30,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:31,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:31,075 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:31,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:31,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2021-10-29 00:04:31,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:31,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85066508] [2021-10-29 00:04:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:31,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:31,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:31,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578951190] [2021-10-29 00:04:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:31,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:31,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:31,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:31,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 00:04:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:31,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 00:04:31,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:31,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:31,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85066508] [2021-10-29 00:04:31,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:31,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578951190] [2021-10-29 00:04:31,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578951190] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:04:31,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:04:31,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 00:04:31,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924555242] [2021-10-29 00:04:31,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:04:31,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:31,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:04:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:31,388 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:31,605 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2021-10-29 00:04:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 00:04:31,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 00:04:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:31,608 INFO L225 Difference]: With dead ends: 131 [2021-10-29 00:04:31,608 INFO L226 Difference]: Without dead ends: 123 [2021-10-29 00:04:31,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:31,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-29 00:04:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 93. [2021-10-29 00:04:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 92 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2021-10-29 00:04:31,637 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 19 [2021-10-29 00:04:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:31,637 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2021-10-29 00:04:31,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2021-10-29 00:04:31,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:04:31,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:31,643 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:31,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-29 00:04:31,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:31,859 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1795587856, now seen corresponding path program 1 times [2021-10-29 00:04:31,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:31,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813991570] [2021-10-29 00:04:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:31,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:31,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:31,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420183531] [2021-10-29 00:04:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:31,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:31,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:31,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:31,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 00:04:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:31,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:04:32,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:04:32,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:32,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813991570] [2021-10-29 00:04:32,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:32,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420183531] [2021-10-29 00:04:32,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420183531] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:32,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:32,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-29 00:04:32,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140978473] [2021-10-29 00:04:32,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 00:04:32,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:32,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:04:32,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:04:32,185 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:32,255 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2021-10-29 00:04:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:04:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 00:04:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:32,258 INFO L225 Difference]: With dead ends: 103 [2021-10-29 00:04:32,258 INFO L226 Difference]: Without dead ends: 93 [2021-10-29 00:04:32,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:04:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-29 00:04:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2021-10-29 00:04:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.275) internal successors, (102), 86 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2021-10-29 00:04:32,271 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2021-10-29 00:04:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:32,272 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2021-10-29 00:04:32,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2021-10-29 00:04:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 00:04:32,273 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:32,273 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:32,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:32,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:32,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2021-10-29 00:04:32,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:32,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69131165] [2021-10-29 00:04:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:32,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:32,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:32,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993743010] [2021-10-29 00:04:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:32,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:32,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:32,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 00:04:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:32,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:04:32,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:32,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:32,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69131165] [2021-10-29 00:04:32,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:32,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993743010] [2021-10-29 00:04:32,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993743010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:32,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:32,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-29 00:04:32,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798380428] [2021-10-29 00:04:32,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:04:32,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:04:32,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:04:32,731 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:32,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:32,760 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2021-10-29 00:04:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:04:32,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 00:04:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:32,762 INFO L225 Difference]: With dead ends: 109 [2021-10-29 00:04:32,762 INFO L226 Difference]: Without dead ends: 91 [2021-10-29 00:04:32,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-29 00:04:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-10-29 00:04:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2021-10-29 00:04:32,774 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2021-10-29 00:04:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:32,775 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2021-10-29 00:04:32,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:32,775 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2021-10-29 00:04:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 00:04:32,776 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:32,776 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:32,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:32,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:32,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:32,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1017079379, now seen corresponding path program 1 times [2021-10-29 00:04:32,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:32,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923735546] [2021-10-29 00:04:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:32,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:33,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:33,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337864757] [2021-10-29 00:04:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:33,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:33,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:33,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:33,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 00:04:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:33,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-29 00:04:33,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:33,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:33,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923735546] [2021-10-29 00:04:33,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:33,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337864757] [2021-10-29 00:04:33,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337864757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:33,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:33,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-29 00:04:33,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691477054] [2021-10-29 00:04:33,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:04:33,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:04:33,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:04:33,622 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:33,919 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2021-10-29 00:04:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 00:04:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 00:04:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:33,924 INFO L225 Difference]: With dead ends: 133 [2021-10-29 00:04:33,924 INFO L226 Difference]: Without dead ends: 131 [2021-10-29 00:04:33,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:04:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-29 00:04:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2021-10-29 00:04:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 93 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) [2021-10-29 00:04:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2021-10-29 00:04:33,935 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2021-10-29 00:04:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:33,935 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2021-10-29 00:04:33,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2021-10-29 00:04:33,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 00:04:33,937 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:33,937 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:33,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:34,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:34,163 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:34,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1159045544, now seen corresponding path program 1 times [2021-10-29 00:04:34,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:34,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740974672] [2021-10-29 00:04:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:34,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:34,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:34,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296673324] [2021-10-29 00:04:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:34,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:34,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:34,187 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:34,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-29 00:04:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:34,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-29 00:04:34,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:34,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:34,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740974672] [2021-10-29 00:04:34,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:34,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296673324] [2021-10-29 00:04:34,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296673324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:34,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:34,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-29 00:04:34,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534868814] [2021-10-29 00:04:34,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 00:04:34,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:04:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:34,914 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:35,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:35,416 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2021-10-29 00:04:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 00:04:35,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-29 00:04:35,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:35,418 INFO L225 Difference]: With dead ends: 150 [2021-10-29 00:04:35,418 INFO L226 Difference]: Without dead ends: 136 [2021-10-29 00:04:35,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-29 00:04:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-29 00:04:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2021-10-29 00:04:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 113 states have (on average 1.2654867256637168) internal successors, (143), 119 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2021-10-29 00:04:35,436 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 23 [2021-10-29 00:04:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:35,437 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2021-10-29 00:04:35,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2021-10-29 00:04:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 00:04:35,439 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:35,440 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:35,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:35,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:35,667 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash -559475920, now seen corresponding path program 1 times [2021-10-29 00:04:35,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:35,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892201595] [2021-10-29 00:04:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:35,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:35,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:35,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273704576] [2021-10-29 00:04:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:35,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:35,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:35,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:35,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-29 00:04:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:35,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:04:35,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:36,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:36,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892201595] [2021-10-29 00:04:36,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:36,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273704576] [2021-10-29 00:04:36,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273704576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:36,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:36,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:04:36,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043277152] [2021-10-29 00:04:36,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:04:36,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:36,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:04:36,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:36,269 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:36,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:36,440 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2021-10-29 00:04:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:04:36,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-29 00:04:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:36,442 INFO L225 Difference]: With dead ends: 157 [2021-10-29 00:04:36,443 INFO L226 Difference]: Without dead ends: 153 [2021-10-29 00:04:36,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-29 00:04:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2021-10-29 00:04:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 125 states have (on average 1.272) internal successors, (159), 131 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2021-10-29 00:04:36,461 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 28 [2021-10-29 00:04:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:36,461 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2021-10-29 00:04:36,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2021-10-29 00:04:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 00:04:36,471 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:36,471 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:36,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:36,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:36,687 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1572440212, now seen corresponding path program 2 times [2021-10-29 00:04:36,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:36,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551250969] [2021-10-29 00:04:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:36,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:36,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:36,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965071171] [2021-10-29 00:04:36,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:04:36,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:36,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:36,703 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:36,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 00:04:36,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:04:36,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:04:36,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 00:04:36,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:37,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:37,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551250969] [2021-10-29 00:04:37,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:37,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965071171] [2021-10-29 00:04:37,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965071171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:37,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:37,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:04:37,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130354240] [2021-10-29 00:04:37,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:04:37,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:04:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:37,321 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:37,509 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2021-10-29 00:04:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:04:37,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-29 00:04:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:37,512 INFO L225 Difference]: With dead ends: 161 [2021-10-29 00:04:37,512 INFO L226 Difference]: Without dead ends: 151 [2021-10-29 00:04:37,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-29 00:04:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2021-10-29 00:04:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 133 states have (on average 1.2706766917293233) internal successors, (169), 139 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) [2021-10-29 00:04:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2021-10-29 00:04:37,531 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 28 [2021-10-29 00:04:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:37,531 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2021-10-29 00:04:37,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2021-10-29 00:04:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-29 00:04:37,533 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:37,533 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:37,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:37,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-29 00:04:37,746 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash -221158463, now seen corresponding path program 2 times [2021-10-29 00:04:37,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:37,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595504315] [2021-10-29 00:04:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:37,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:37,770 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:37,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526537325] [2021-10-29 00:04:37,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:04:37,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:37,782 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:37,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-29 00:04:38,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:04:38,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:04:38,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:04:38,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:38,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:38,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595504315] [2021-10-29 00:04:38,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:38,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526537325] [2021-10-29 00:04:38,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526537325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:38,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:38,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-29 00:04:38,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087781861] [2021-10-29 00:04:38,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:04:38,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:38,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:04:38,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:38,197 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:38,242 INFO L93 Difference]: Finished difference Result 162 states and 193 transitions. [2021-10-29 00:04:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:04:38,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-29 00:04:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:38,245 INFO L225 Difference]: With dead ends: 162 [2021-10-29 00:04:38,245 INFO L226 Difference]: Without dead ends: 144 [2021-10-29 00:04:38,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:04:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-29 00:04:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-29 00:04:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 137 states have (on average 1.2481751824817517) internal successors, (171), 143 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2021-10-29 00:04:38,262 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 29 [2021-10-29 00:04:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:38,262 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2021-10-29 00:04:38,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2021-10-29 00:04:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 00:04:38,263 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:38,263 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:38,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-29 00:04:38,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-29 00:04:38,478 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1734668817, now seen corresponding path program 2 times [2021-10-29 00:04:38,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:38,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606147432] [2021-10-29 00:04:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:38,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:38,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:38,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838762644] [2021-10-29 00:04:38,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:04:38,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:38,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:38,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:38,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-29 00:04:38,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:04:38,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:04:38,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-29 00:04:38,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:39,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:39,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606147432] [2021-10-29 00:04:39,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:39,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838762644] [2021-10-29 00:04:39,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838762644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:39,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:39,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:04:39,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387152167] [2021-10-29 00:04:39,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:04:39,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:04:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:04:39,571 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:39,831 INFO L93 Difference]: Finished difference Result 186 states and 216 transitions. [2021-10-29 00:04:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 00:04:39,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-29 00:04:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:39,834 INFO L225 Difference]: With dead ends: 186 [2021-10-29 00:04:39,834 INFO L226 Difference]: Without dead ends: 184 [2021-10-29 00:04:39,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:04:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-29 00:04:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 147. [2021-10-29 00:04:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 140 states have (on average 1.2428571428571429) internal successors, (174), 146 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) [2021-10-29 00:04:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2021-10-29 00:04:39,853 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 30 [2021-10-29 00:04:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:39,853 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2021-10-29 00:04:39,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2021-10-29 00:04:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 00:04:39,854 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:39,855 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:39,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:40,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-29 00:04:40,075 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 713600463, now seen corresponding path program 1 times [2021-10-29 00:04:40,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:40,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670851338] [2021-10-29 00:04:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:40,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:40,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:40,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089687287] [2021-10-29 00:04:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:40,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:40,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:40,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:40,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-29 00:04:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:40,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-29 00:04:40,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:41,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:41,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670851338] [2021-10-29 00:04:41,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:41,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089687287] [2021-10-29 00:04:41,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089687287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:41,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:41,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-29 00:04:41,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107628912] [2021-10-29 00:04:41,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 00:04:41,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:04:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:41,378 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:41,698 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2021-10-29 00:04:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 00:04:41,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-29 00:04:41,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:41,701 INFO L225 Difference]: With dead ends: 183 [2021-10-29 00:04:41,701 INFO L226 Difference]: Without dead ends: 181 [2021-10-29 00:04:41,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:04:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-29 00:04:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2021-10-29 00:04:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 140 states have (on average 1.2357142857142858) internal successors, (173), 146 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) [2021-10-29 00:04:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2021-10-29 00:04:41,720 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 30 [2021-10-29 00:04:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:41,720 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2021-10-29 00:04:41,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2021-10-29 00:04:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 00:04:41,722 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:41,722 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:41,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:41,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-29 00:04:41,938 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1249637014, now seen corresponding path program 1 times [2021-10-29 00:04:41,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:41,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891493346] [2021-10-29 00:04:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:41,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:41,949 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:41,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037528583] [2021-10-29 00:04:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:41,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:41,957 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:41,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-29 00:04:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:04:42,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-29 00:04:42,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:43,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:43,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891493346] [2021-10-29 00:04:43,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:43,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037528583] [2021-10-29 00:04:43,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037528583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:43,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:43,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:04:43,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48911036] [2021-10-29 00:04:43,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:04:43,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:04:43,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:43,038 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:43,264 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2021-10-29 00:04:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:04:43,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 00:04:43,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:43,266 INFO L225 Difference]: With dead ends: 191 [2021-10-29 00:04:43,266 INFO L226 Difference]: Without dead ends: 179 [2021-10-29 00:04:43,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-29 00:04:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 139. [2021-10-29 00:04:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 132 states have (on average 1.2348484848484849) internal successors, (163), 138 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2021-10-29 00:04:43,285 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 32 [2021-10-29 00:04:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:43,285 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2021-10-29 00:04:43,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2021-10-29 00:04:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 00:04:43,287 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:43,287 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:43,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:43,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-29 00:04:43,502 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:43,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash -744507692, now seen corresponding path program 2 times [2021-10-29 00:04:43,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:43,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068934738] [2021-10-29 00:04:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:43,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:43,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:43,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469101053] [2021-10-29 00:04:43,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:04:43,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:43,515 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:43,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-29 00:04:43,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:04:43,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:04:43,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-29 00:04:43,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:04:44,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:44,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068934738] [2021-10-29 00:04:44,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:44,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469101053] [2021-10-29 00:04:44,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469101053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:44,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:44,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:04:44,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113213921] [2021-10-29 00:04:44,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 00:04:44,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:44,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:04:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:04:44,512 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:04:44,935 INFO L93 Difference]: Finished difference Result 195 states and 226 transitions. [2021-10-29 00:04:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:04:44,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 00:04:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:04:44,937 INFO L225 Difference]: With dead ends: 195 [2021-10-29 00:04:44,937 INFO L226 Difference]: Without dead ends: 183 [2021-10-29 00:04:44,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:04:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-29 00:04:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2021-10-29 00:04:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 139 states have (on average 1.2302158273381294) internal successors, (171), 145 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2021-10-29 00:04:44,970 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 32 [2021-10-29 00:04:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:04:44,971 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2021-10-29 00:04:44,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:04:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2021-10-29 00:04:44,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 00:04:44,972 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:04:44,972 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:04:45,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-29 00:04:45,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-29 00:04:45,186 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:04:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:04:45,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1488876978, now seen corresponding path program 3 times [2021-10-29 00:04:45,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:04:45,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078658501] [2021-10-29 00:04:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:04:45,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:04:45,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:04:45,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093246543] [2021-10-29 00:04:45,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:04:45,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:04:45,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:04:45,199 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:04:45,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-29 00:04:45,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 00:04:45,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:04:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 00:04:45,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:04:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-29 00:04:47,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:04:47,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078658501] [2021-10-29 00:04:47,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:04:47,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093246543] [2021-10-29 00:04:47,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093246543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:04:47,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:04:47,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-29 00:04:47,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768271253] [2021-10-29 00:04:47,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 00:04:47,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:04:47,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 00:04:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:04:47,944 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:46,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:46,806 INFO L93 Difference]: Finished difference Result 191 states and 217 transitions. [2021-10-29 00:05:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 00:05:46,807 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-29 00:05:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:46,809 INFO L225 Difference]: With dead ends: 191 [2021-10-29 00:05:46,809 INFO L226 Difference]: Without dead ends: 187 [2021-10-29 00:05:46,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=169, Invalid=427, Unknown=4, NotChecked=0, Total=600 [2021-10-29 00:05:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-29 00:05:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 154. [2021-10-29 00:05:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 147 states have (on average 1.2380952380952381) internal successors, (182), 153 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2021-10-29 00:05:46,841 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 37 [2021-10-29 00:05:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:46,842 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2021-10-29 00:05:46,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2021-10-29 00:05:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 00:05:46,843 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:46,843 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:46,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:47,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:47,070 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:47,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:47,071 INFO L85 PathProgramCache]: Analyzing trace with hash 475912686, now seen corresponding path program 4 times [2021-10-29 00:05:47,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:47,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199222130] [2021-10-29 00:05:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:47,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:47,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:47,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234088155] [2021-10-29 00:05:47,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:05:47,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:47,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:47,097 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:47,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-29 00:05:47,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:05:47,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:47,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 00:05:47,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:48,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:48,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199222130] [2021-10-29 00:05:48,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:48,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234088155] [2021-10-29 00:05:48,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234088155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:48,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:48,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:05:48,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842995762] [2021-10-29 00:05:48,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:48,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:48,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:48,681 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:49,269 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2021-10-29 00:05:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:49,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-29 00:05:49,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:49,272 INFO L225 Difference]: With dead ends: 192 [2021-10-29 00:05:49,272 INFO L226 Difference]: Without dead ends: 182 [2021-10-29 00:05:49,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-29 00:05:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2021-10-29 00:05:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 161 states have (on average 1.236024844720497) internal successors, (199), 167 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2021-10-29 00:05:49,307 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2021-10-29 00:05:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:49,308 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2021-10-29 00:05:49,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2021-10-29 00:05:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 00:05:49,309 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:49,309 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:49,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:49,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:49,514 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 477759728, now seen corresponding path program 5 times [2021-10-29 00:05:49,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:49,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895032424] [2021-10-29 00:05:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:49,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:49,535 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:49,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950607552] [2021-10-29 00:05:49,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-29 00:05:49,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:49,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:49,542 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:49,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-29 00:05:50,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-29 00:05:50,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:50,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 00:05:50,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:51,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:51,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895032424] [2021-10-29 00:05:51,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:51,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950607552] [2021-10-29 00:05:51,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950607552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:51,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:51,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:05:51,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892977227] [2021-10-29 00:05:51,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:51,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:51,668 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:52,335 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2021-10-29 00:05:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:52,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-29 00:05:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:52,338 INFO L225 Difference]: With dead ends: 201 [2021-10-29 00:05:52,338 INFO L226 Difference]: Without dead ends: 197 [2021-10-29 00:05:52,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-29 00:05:52,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2021-10-29 00:05:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 161 states have (on average 1.236024844720497) internal successors, (199), 167 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2021-10-29 00:05:52,369 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 37 [2021-10-29 00:05:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:52,369 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2021-10-29 00:05:52,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2021-10-29 00:05:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 00:05:52,370 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:52,371 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:52,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:52,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:52,580 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash -318408398, now seen corresponding path program 6 times [2021-10-29 00:05:52,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:52,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305871524] [2021-10-29 00:05:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:52,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:52,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:52,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776117840] [2021-10-29 00:05:52,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-29 00:05:52,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:52,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:52,623 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:52,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-29 00:05:53,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-29 00:05:53,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:53,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 00:05:53,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-29 00:05:54,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:54,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305871524] [2021-10-29 00:05:54,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:54,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776117840] [2021-10-29 00:05:54,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776117840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:54,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:54,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:05:54,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350096495] [2021-10-29 00:05:54,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:54,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:54,040 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:54,465 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2021-10-29 00:05:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:54,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-29 00:05:54,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:54,469 INFO L225 Difference]: With dead ends: 200 [2021-10-29 00:05:54,469 INFO L226 Difference]: Without dead ends: 190 [2021-10-29 00:05:54,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:05:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-29 00:05:54,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 177. [2021-10-29 00:05:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 170 states have (on average 1.2411764705882353) internal successors, (211), 176 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 211 transitions. [2021-10-29 00:05:54,498 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 211 transitions. Word has length 37 [2021-10-29 00:05:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:54,498 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 211 transitions. [2021-10-29 00:05:54,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 211 transitions. [2021-10-29 00:05:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 00:05:54,499 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:54,500 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:54,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:54,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-29 00:05:54,726 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash -316561356, now seen corresponding path program 7 times [2021-10-29 00:05:54,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:54,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653773654] [2021-10-29 00:05:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:54,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:54,745 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:54,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101541916] [2021-10-29 00:05:54,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 00:05:54,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:54,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:54,747 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:54,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-29 00:05:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:55,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 00:05:55,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:56,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:56,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653773654] [2021-10-29 00:05:56,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:56,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101541916] [2021-10-29 00:05:56,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101541916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:56,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:56,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:05:56,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319571760] [2021-10-29 00:05:56,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:56,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:56,330 INFO L87 Difference]: Start difference. First operand 177 states and 211 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:57,176 INFO L93 Difference]: Finished difference Result 214 states and 251 transitions. [2021-10-29 00:05:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:57,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-29 00:05:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:57,178 INFO L225 Difference]: With dead ends: 214 [2021-10-29 00:05:57,179 INFO L226 Difference]: Without dead ends: 210 [2021-10-29 00:05:57,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-29 00:05:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 181. [2021-10-29 00:05:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 174 states have (on average 1.2413793103448276) internal successors, (216), 180 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2021-10-29 00:05:57,214 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2021-10-29 00:05:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:57,215 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2021-10-29 00:05:57,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2021-10-29 00:05:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-29 00:05:57,216 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:57,216 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:57,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:57,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-29 00:05:57,442 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1329525648, now seen corresponding path program 8 times [2021-10-29 00:05:57,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:57,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115359160] [2021-10-29 00:05:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:57,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:57,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:57,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125804943] [2021-10-29 00:05:57,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:57,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:57,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:57,454 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:57,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-29 00:05:58,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:58,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:58,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 00:05:58,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:58,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:58,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115359160] [2021-10-29 00:05:58,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:05:58,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125804943] [2021-10-29 00:05:58,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125804943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:58,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:05:58,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:05:58,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583303310] [2021-10-29 00:05:58,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:05:58,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:58,865 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:59,384 INFO L93 Difference]: Finished difference Result 210 states and 247 transitions. [2021-10-29 00:05:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-29 00:05:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:05:59,386 INFO L225 Difference]: With dead ends: 210 [2021-10-29 00:05:59,387 INFO L226 Difference]: Without dead ends: 200 [2021-10-29 00:05:59,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-29 00:05:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 181. [2021-10-29 00:05:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 174 states have (on average 1.2413793103448276) internal successors, (216), 180 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2021-10-29 00:05:59,412 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 37 [2021-10-29 00:05:59,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:05:59,412 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2021-10-29 00:05:59,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2021-10-29 00:05:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-29 00:05:59,413 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:05:59,413 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:59,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:59,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-29 00:05:59,614 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:05:59,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1146728065, now seen corresponding path program 3 times [2021-10-29 00:05:59,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:59,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670268672] [2021-10-29 00:05:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:59,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:59,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:05:59,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494231896] [2021-10-29 00:05:59,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:59,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:59,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:59,634 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:59,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-29 00:06:00,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-29 00:06:00,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:00,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:06:00,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:00,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:00,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670268672] [2021-10-29 00:06:00,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:00,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494231896] [2021-10-29 00:06:00,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494231896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:00,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:00,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-29 00:06:00,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306855407] [2021-10-29 00:06:00,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:06:00,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:06:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:06:00,611 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:00,730 INFO L93 Difference]: Finished difference Result 211 states and 251 transitions. [2021-10-29 00:06:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:06:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-29 00:06:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:00,733 INFO L225 Difference]: With dead ends: 211 [2021-10-29 00:06:00,733 INFO L226 Difference]: Without dead ends: 193 [2021-10-29 00:06:00,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:06:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-29 00:06:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-10-29 00:06:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.2258064516129032) internal successors, (228), 192 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 228 transitions. [2021-10-29 00:06:00,770 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 228 transitions. Word has length 38 [2021-10-29 00:06:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:00,771 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 228 transitions. [2021-10-29 00:06:00,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 228 transitions. [2021-10-29 00:06:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-29 00:06:00,772 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:00,772 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:00,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:00,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:00,986 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1188185069, now seen corresponding path program 3 times [2021-10-29 00:06:00,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:00,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282585961] [2021-10-29 00:06:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:00,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:01,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:01,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606884249] [2021-10-29 00:06:01,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:06:01,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:01,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:01,017 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:01,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-29 00:06:01,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 00:06:01,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:01,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 00:06:01,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-29 00:06:02,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:02,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282585961] [2021-10-29 00:06:02,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:02,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606884249] [2021-10-29 00:06:02,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606884249] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:02,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:02,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-29 00:06:02,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068302240] [2021-10-29 00:06:02,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 00:06:02,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 00:06:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:06:02,862 INFO L87 Difference]: Start difference. First operand 193 states and 228 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:03,562 INFO L93 Difference]: Finished difference Result 253 states and 290 transitions. [2021-10-29 00:06:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:06:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-29 00:06:03,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:03,565 INFO L225 Difference]: With dead ends: 253 [2021-10-29 00:06:03,565 INFO L226 Difference]: Without dead ends: 251 [2021-10-29 00:06:03,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:06:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-29 00:06:03,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 193. [2021-10-29 00:06:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.2204301075268817) internal successors, (227), 192 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 227 transitions. [2021-10-29 00:06:03,608 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 227 transitions. Word has length 39 [2021-10-29 00:06:03,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:03,609 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 227 transitions. [2021-10-29 00:06:03,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 227 transitions. [2021-10-29 00:06:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-29 00:06:03,610 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:03,610 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:03,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:03,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:03,826 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:03,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2085713873, now seen corresponding path program 2 times [2021-10-29 00:06:03,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:03,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230828751] [2021-10-29 00:06:03,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:03,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:03,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:03,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235519054] [2021-10-29 00:06:03,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:06:03,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:03,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:03,847 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:03,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-29 00:06:04,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:06:04,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:04,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-29 00:06:04,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:06,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:06,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230828751] [2021-10-29 00:06:06,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:06,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235519054] [2021-10-29 00:06:06,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235519054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:06,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:06,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-29 00:06:06,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349700609] [2021-10-29 00:06:06,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 00:06:06,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:06,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 00:06:06,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:06:06,827 INFO L87 Difference]: Start difference. First operand 193 states and 227 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:09,661 INFO L93 Difference]: Finished difference Result 239 states and 276 transitions. [2021-10-29 00:06:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 00:06:09,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-29 00:06:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:09,663 INFO L225 Difference]: With dead ends: 239 [2021-10-29 00:06:09,663 INFO L226 Difference]: Without dead ends: 237 [2021-10-29 00:06:09,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:06:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-29 00:06:09,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 198. [2021-10-29 00:06:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.2146596858638743) internal successors, (232), 197 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 232 transitions. [2021-10-29 00:06:09,697 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 232 transitions. Word has length 39 [2021-10-29 00:06:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:09,697 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 232 transitions. [2021-10-29 00:06:09,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 232 transitions. [2021-10-29 00:06:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-29 00:06:09,698 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:09,698 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:09,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:09,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-29 00:06:09,926 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1047636459, now seen corresponding path program 3 times [2021-10-29 00:06:09,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:09,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501428679] [2021-10-29 00:06:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:09,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:09,937 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:09,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883693317] [2021-10-29 00:06:09,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:06:09,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:09,939 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-29 00:06:10,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 00:06:10,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:10,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 00:06:10,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-29 00:06:11,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:11,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501428679] [2021-10-29 00:06:11,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:11,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883693317] [2021-10-29 00:06:11,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883693317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:11,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:11,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:06:11,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598358703] [2021-10-29 00:06:11,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:06:11,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:11,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:06:11,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:06:11,034 INFO L87 Difference]: Start difference. First operand 198 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:12,078 INFO L93 Difference]: Finished difference Result 198 states and 232 transitions. [2021-10-29 00:06:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:06:12,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-29 00:06:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:12,080 INFO L225 Difference]: With dead ends: 198 [2021-10-29 00:06:12,080 INFO L226 Difference]: Without dead ends: 184 [2021-10-29 00:06:12,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:06:12,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-29 00:06:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 143. [2021-10-29 00:06:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 142 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2021-10-29 00:06:12,109 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 39 [2021-10-29 00:06:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:12,110 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2021-10-29 00:06:12,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:12,110 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2021-10-29 00:06:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-29 00:06:12,111 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:12,111 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:12,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:12,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-29 00:06:12,334 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash 918563244, now seen corresponding path program 9 times [2021-10-29 00:06:12,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:12,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724199504] [2021-10-29 00:06:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:12,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:12,359 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:12,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111480808] [2021-10-29 00:06:12,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:06:12,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:12,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:12,360 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:12,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-29 00:06:13,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 00:06:13,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:13,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 00:06:13,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-29 00:06:13,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:13,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724199504] [2021-10-29 00:06:13,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:13,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111480808] [2021-10-29 00:06:13,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111480808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:13,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:13,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-29 00:06:13,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895229622] [2021-10-29 00:06:13,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:06:13,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:06:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:06:13,318 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:13,468 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-10-29 00:06:13,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:06:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-29 00:06:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:13,469 INFO L225 Difference]: With dead ends: 143 [2021-10-29 00:06:13,469 INFO L226 Difference]: Without dead ends: 133 [2021-10-29 00:06:13,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:06:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-29 00:06:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 52. [2021-10-29 00:06:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-10-29 00:06:13,485 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 46 [2021-10-29 00:06:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:13,486 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-10-29 00:06:13,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-10-29 00:06:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-29 00:06:13,487 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:13,487 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:13,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:13,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-29 00:06:13,714 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:13,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -309462655, now seen corresponding path program 4 times [2021-10-29 00:06:13,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:13,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468002406] [2021-10-29 00:06:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:13,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:13,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:13,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241648807] [2021-10-29 00:06:13,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:06:13,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:13,738 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:13,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-29 00:06:14,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:06:14,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:06:14,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:06:14,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:06:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:06:14,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:06:14,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468002406] [2021-10-29 00:06:14,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 00:06:14,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241648807] [2021-10-29 00:06:14,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241648807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:06:14,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 00:06:14,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 00:06:14,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535732711] [2021-10-29 00:06:14,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:06:14,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:06:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:06:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:06:14,763 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:06:14,888 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-10-29 00:06:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 00:06:14,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-29 00:06:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:06:14,889 INFO L225 Difference]: With dead ends: 69 [2021-10-29 00:06:14,889 INFO L226 Difference]: Without dead ends: 61 [2021-10-29 00:06:14,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:06:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-29 00:06:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-29 00:06:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.11864406779661) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-10-29 00:06:14,912 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 47 [2021-10-29 00:06:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:06:14,913 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-10-29 00:06:14,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:06:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-10-29 00:06:14,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-29 00:06:14,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:06:14,914 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:14,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:15,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:15,122 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 00:06:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:06:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash 173421503, now seen corresponding path program 5 times [2021-10-29 00:06:15,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:06:15,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827753032] [2021-10-29 00:06:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:06:15,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:06:15,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 00:06:15,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64058311] [2021-10-29 00:06:15,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-29 00:06:15,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:06:15,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:06:15,157 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:06:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-29 00:06:16,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-29 00:06:16,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-29 00:06:16,312 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:06:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:06:16,388 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:06:16,388 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 00:06:16,389 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:16,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:16,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:16,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:16,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:16,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:16,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 00:06:16,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-29 00:06:16,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-29 00:06:16,604 INFO L731 BasicCegarLoop]: Path program histogram: [9, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:06:16,607 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:06:16,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:06:16 BoogieIcfgContainer [2021-10-29 00:06:16,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:06:16,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:06:16,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:06:16,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:06:16,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:04:27" (3/4) ... [2021-10-29 00:06:16,673 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 00:06:16,750 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-29 00:06:16,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:06:16,752 INFO L168 Benchmark]: Toolchain (without parser) took 110146.86 ms. Allocated memory was 94.4 MB in the beginning and 251.7 MB in the end (delta: 157.3 MB). Free memory was 53.7 MB in the beginning and 56.8 MB in the end (delta: -3.1 MB). Peak memory consumption was 154.2 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:16,752 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:06:16,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.86 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 69.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:16,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:16,754 INFO L168 Benchmark]: Boogie Preprocessor took 31.51 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 66.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:16,754 INFO L168 Benchmark]: RCFGBuilder took 363.77 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 55.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:16,755 INFO L168 Benchmark]: TraceAbstraction took 109285.62 ms. Allocated memory was 94.4 MB in the beginning and 251.7 MB in the end (delta: 157.3 MB). Free memory was 55.4 MB in the beginning and 61.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 154.2 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:16,755 INFO L168 Benchmark]: Witness Printer took 79.95 ms. Allocated memory is still 251.7 MB. Free memory was 61.3 MB in the beginning and 56.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 00:06:16,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.86 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 69.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.43 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.51 ms. Allocated memory is still 94.4 MB. Free memory was 68.0 MB in the beginning and 66.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 363.77 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 55.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 109285.62 ms. Allocated memory was 94.4 MB in the beginning and 251.7 MB in the end (delta: 157.3 MB). Free memory was 55.4 MB in the beginning and 61.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 154.2 MB. Max. memory is 16.1 GB. * Witness Printer took 79.95 ms. Allocated memory is still 251.7 MB. Free memory was 61.3 MB in the beginning and 56.8 MB in the end (delta: 4.5 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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] long long a, b, p, q, r, s; [L21] int x, y; [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 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) VAL [counter=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(a != b)) VAL [counter=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=3] [L11] COND FALSE !(!(cond)) VAL [counter=3] [L11] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(a != b)) VAL [counter=3] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L11] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(a != b)) VAL [counter=4] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=4] [L34] EXPR counter++ VAL [counter=5] [L34] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(a != b)) VAL [counter=5] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=5] [L34] EXPR counter++ VAL [counter=6] [L34] COND FALSE !(counter++<5) [L11] COND TRUE !(cond) VAL [counter=6] [L13] reach_error() VAL [counter=6] - 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. - 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, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 109.1s, OverallIterations: 31, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 70.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1202 SDtfs, 1570 SDslu, 3503 SDs, 0 SdLazy, 3394 SolverSat, 324 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 38.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 902 GetRequests, 668 SyntacticMatches, 1 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 31.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=27, InterpolantAutomatonStates: 237, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 30 MinimizatonAttempts, 683 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 911 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 825 ConstructedInterpolants, 7 QuantifiedInterpolants, 9418 SizeOfPredicates, 223 NumberOfNonLiveVariables, 3459 ConjunctsInSsa, 611 ConjunctsInUnsatCore, 30 InterpolantComputations, 7 PerfectInterpolantSequences, 165/647 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! [2021-10-29 00:06:16,976 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-29 00:06:16,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea342d9f-9e66-4f14-941e-6fdce7b5b5c6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...