./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_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_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg --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 5f094e7ea34d2025ab25ab51a4a0b06d8f845826c76dbd06e91f3d4a761fa19b ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2021-10-28 09:38:49,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:38:49,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:38:49,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:38:49,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:38:49,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:38:49,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:38:49,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:38:49,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:38:49,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:38:49,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:38:49,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:38:49,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:38:49,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:38:49,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:38:49,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:38:49,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:38:49,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:38:49,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:38:49,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:38:49,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:38:49,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:38:49,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:38:49,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:38:49,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:38:49,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:38:49,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:38:49,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:38:49,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:38:49,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:38:49,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:38:49,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:38:49,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:38:49,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:38:49,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:38:49,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:38:49,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:38:49,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:38:49,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:38:49,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:38:49,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:38:49,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:38:49,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:38:49,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:38:49,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:38:49,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:38:49,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:38:49,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:38:49,966 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:38:49,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:38:49,966 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:38:49,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:38:49,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:38:49,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:38:49,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:38:49,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:38:49,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:38:49,969 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:38:49,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:38:49,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:38:49,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:38:49,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:38:49,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:38:49,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:38:49,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:38:49,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:38:49,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:38:49,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:38:49,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:38:49,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:38:49,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:38:49,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:38:49,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:38:49,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:38:49,975 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_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f094e7ea34d2025ab25ab51a4a0b06d8f845826c76dbd06e91f3d4a761fa19b [2021-10-28 09:38:50,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:38:50,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:38:50,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:38:50,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:38:50,287 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:38:50,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2021-10-28 09:38:50,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/data/5dbe31846/6beb0b13b79b40faa1445d61af3ff1d9/FLAG5ecf8945b [2021-10-28 09:38:50,812 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:38:50,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2021-10-28 09:38:50,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/data/5dbe31846/6beb0b13b79b40faa1445d61af3ff1d9/FLAG5ecf8945b [2021-10-28 09:38:51,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/data/5dbe31846/6beb0b13b79b40faa1445d61af3ff1d9 [2021-10-28 09:38:51,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:38:51,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:38:51,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:38:51,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:38:51,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:38:51,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a1819d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51, skipping insertion in model container [2021-10-28 09:38:51,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:38:51,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:38:51,416 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_197c2c3b-8e27-45f2-ac17-bd2830f2b312/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c[526,539] [2021-10-28 09:38:51,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:38:51,440 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:38:51,451 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_197c2c3b-8e27-45f2-ac17-bd2830f2b312/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c[526,539] [2021-10-28 09:38:51,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:38:51,472 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:38:51,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51 WrapperNode [2021-10-28 09:38:51,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:38:51,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:38:51,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:38:51,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:38:51,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:38:51,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:38:51,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:38:51,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:38:51,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:38:51,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:38:51,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:38:51,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:38:51,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (1/1) ... [2021-10-28 09:38:51,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:38:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:51,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:38:51,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:38:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:38:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:38:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:38:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:38:51,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:38:51,939 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-28 09:38:51,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:38:51 BoogieIcfgContainer [2021-10-28 09:38:51,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:38:51,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:38:51,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:38:51,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:38:51,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:38:51" (1/3) ... [2021-10-28 09:38:51,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cf0f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:38:51, skipping insertion in model container [2021-10-28 09:38:51,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:38:51" (2/3) ... [2021-10-28 09:38:51,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cf0f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:38:51, skipping insertion in model container [2021-10-28 09:38:51,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:38:51" (3/3) ... [2021-10-28 09:38:51,965 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound5.c [2021-10-28 09:38:51,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:38:51,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 09:38:52,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:38:52,042 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 [2021-10-28 09:38:52,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:38:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:38:52,070 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:52,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:38:52,071 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)] === [2021-10-28 09:38:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:52,076 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 09:38:52,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:52,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033852706] [2021-10-28 09:38:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:52,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:52,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:52,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033852706] [2021-10-28 09:38:52,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033852706] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:52,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:52,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:38:52,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998245341] [2021-10-28 09:38:52,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:38:52,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:52,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:38:52,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:52,334 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:52,466 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2021-10-28 09:38:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:38:52,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-28 09:38:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:52,487 INFO L225 Difference]: With dead ends: 102 [2021-10-28 09:38:52,488 INFO L226 Difference]: Without dead ends: 57 [2021-10-28 09:38:52,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:52,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-28 09:38:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2021-10-28 09:38:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 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) [2021-10-28 09:38:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 09:38:52,528 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-10-28 09:38:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:52,529 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 09:38:52,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-28 09:38:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:38:52,530 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:52,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:52,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:38:52,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2021-10-28 09:38:52,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:52,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89228237] [2021-10-28 09:38:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:52,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:52,551 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:52,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66804305] [2021-10-28 09:38:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:52,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:52,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:52,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:38:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:52,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:38:52,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:52,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:52,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89228237] [2021-10-28 09:38:52,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:52,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66804305] [2021-10-28 09:38:52,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66804305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:52,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:52,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:38:52,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400424966] [2021-10-28 09:38:52,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:38:52,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:38:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:52,686 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:52,703 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-10-28 09:38:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:38:52,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-28 09:38:52,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:52,706 INFO L225 Difference]: With dead ends: 54 [2021-10-28 09:38:52,706 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 09:38:52,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 09:38:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-28 09:38:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 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) [2021-10-28 09:38:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-28 09:38:52,715 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-10-28 09:38:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:52,716 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-28 09:38:52,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-28 09:38:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:38:52,717 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:52,717 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:52,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:52,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:52,932 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:52,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-28 09:38:52,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:52,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920329623] [2021-10-28 09:38:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:52,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:53,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:53,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920329623] [2021-10-28 09:38:53,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920329623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:53,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:53,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:38:53,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066951172] [2021-10-28 09:38:53,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:38:53,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:53,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:38:53,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:53,041 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:53,123 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-10-28 09:38:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:38:53,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-28 09:38:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:53,125 INFO L225 Difference]: With dead ends: 54 [2021-10-28 09:38:53,126 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 09:38:53,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 09:38:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-10-28 09:38:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 32 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) [2021-10-28 09:38:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 09:38:53,134 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2021-10-28 09:38:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:53,135 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 09:38:53,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-28 09:38:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:38:53,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:53,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:53,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:38:53,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-28 09:38:53,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:53,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064002931] [2021-10-28 09:38:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:53,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:53,154 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:53,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861638024] [2021-10-28 09:38:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:53,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:53,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:53,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:53,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:38:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:53,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:38:53,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:53,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064002931] [2021-10-28 09:38:53,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861638024] [2021-10-28 09:38:53,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861638024] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:53,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:53,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:38:53,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875560190] [2021-10-28 09:38:53,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:38:53,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:38:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:53,412 INFO L87 Difference]: Start difference. First operand 33 states and 37 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) [2021-10-28 09:38:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:53,525 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-10-28 09:38:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:38:53,528 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 [2021-10-28 09:38:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:53,529 INFO L225 Difference]: With dead ends: 79 [2021-10-28 09:38:53,530 INFO L226 Difference]: Without dead ends: 56 [2021-10-28 09:38:53,530 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 [2021-10-28 09:38:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-28 09:38:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2021-10-28 09:38:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-10-28 09:38:53,551 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2021-10-28 09:38:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:53,552 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-10-28 09:38:53,552 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) [2021-10-28 09:38:53,552 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-10-28 09:38:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:38:53,553 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:53,554 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:53,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:53,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-28 09:38:53,782 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2021-10-28 09:38:53,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:53,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050641296] [2021-10-28 09:38:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:53,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:53,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:53,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633657335] [2021-10-28 09:38:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:53,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:53,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:53,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:53,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:38:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:53,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:38:53,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:54,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:54,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050641296] [2021-10-28 09:38:54,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:54,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633657335] [2021-10-28 09:38:54,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633657335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:54,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:54,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:38:54,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108958205] [2021-10-28 09:38:54,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:38:54,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:38:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:38:54,110 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-10-28 09:38:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:54,188 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-10-28 09:38:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:38:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2021-10-28 09:38:54,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:54,196 INFO L225 Difference]: With dead ends: 66 [2021-10-28 09:38:54,196 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 09:38:54,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 09:38:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-10-28 09:38:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.302325581395349) internal successors, (56), 47 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) [2021-10-28 09:38:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-10-28 09:38:54,207 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2021-10-28 09:38:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:54,208 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-10-28 09:38:54,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-10-28 09:38:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-10-28 09:38:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:38:54,209 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:54,209 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:54,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:54,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:54,410 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2021-10-28 09:38:54,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:54,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016207294] [2021-10-28 09:38:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:54,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:54,424 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:54,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740359493] [2021-10-28 09:38:54,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:54,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:54,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:54,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:38:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:54,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:38:54,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:54,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:54,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016207294] [2021-10-28 09:38:54,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:54,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740359493] [2021-10-28 09:38:54,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740359493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:54,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:54,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 09:38:54,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736687089] [2021-10-28 09:38:54,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:38:54,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:54,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:38:54,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:54,560 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 5 states, 5 states have (on average 3.6) 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) [2021-10-28 09:38:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:54,590 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-10-28 09:38:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:38:54,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 09:38:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:54,592 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:38:54,592 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 09:38:54,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 09:38:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 09:38:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.288888888888889) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:54,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-10-28 09:38:54,599 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2021-10-28 09:38:54,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:54,600 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 09:38:54,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) 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) [2021-10-28 09:38:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-10-28 09:38:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:38:54,601 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:54,601 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:54,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:54,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:54,830 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-10-28 09:38:54,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:54,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653833452] [2021-10-28 09:38:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:54,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:54,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:54,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577700279] [2021-10-28 09:38:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:54,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:54,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:54,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:54,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:38:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:54,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:38:54,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:55,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:55,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653833452] [2021-10-28 09:38:55,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:55,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577700279] [2021-10-28 09:38:55,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577700279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:55,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:55,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:38:55,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171030463] [2021-10-28 09:38:55,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:38:55,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:38:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:55,159 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-10-28 09:38:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:55,285 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2021-10-28 09:38:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:38:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 09:38:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:55,288 INFO L225 Difference]: With dead ends: 126 [2021-10-28 09:38:55,289 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 09:38:55,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 09:38:55,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2021-10-28 09:38:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2021-10-28 09:38:55,314 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2021-10-28 09:38:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:55,315 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2021-10-28 09:38:55,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-10-28 09:38:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2021-10-28 09:38:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:38:55,317 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:55,317 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:55,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:55,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 09:38:55,542 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2021-10-28 09:38:55,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:55,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103075630] [2021-10-28 09:38:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:55,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:55,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:55,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108355113] [2021-10-28 09:38:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:55,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:55,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:55,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:38:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:55,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:38:55,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:55,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:55,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103075630] [2021-10-28 09:38:55,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:55,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108355113] [2021-10-28 09:38:55,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108355113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:55,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:55,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:38:55,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474351825] [2021-10-28 09:38:55,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:38:55,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:38:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:55,756 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:55,774 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2021-10-28 09:38:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:38:55,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-10-28 09:38:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:55,776 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:38:55,776 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 09:38:55,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 09:38:55,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-10-28 09:38:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 70 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2021-10-28 09:38:55,797 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 25 [2021-10-28 09:38:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:55,797 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2021-10-28 09:38:55,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2021-10-28 09:38:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:38:55,799 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:55,799 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:55,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:56,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 09:38:56,026 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2021-10-28 09:38:56,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:56,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738513118] [2021-10-28 09:38:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:56,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:56,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:56,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319660335] [2021-10-28 09:38:56,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:56,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:56,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:56,039 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:56,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:38:56,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:38:56,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:56,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:38:56,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:38:56,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:56,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738513118] [2021-10-28 09:38:56,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:56,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319660335] [2021-10-28 09:38:56,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319660335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:56,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:56,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:38:56,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208313024] [2021-10-28 09:38:56,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:38:56,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:38:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:56,235 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-10-28 09:38:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:56,260 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-10-28 09:38:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:38:56,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 26 [2021-10-28 09:38:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:56,262 INFO L225 Difference]: With dead ends: 107 [2021-10-28 09:38:56,262 INFO L226 Difference]: Without dead ends: 79 [2021-10-28 09:38:56,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-28 09:38:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2021-10-28 09:38:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 72 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2021-10-28 09:38:56,268 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 26 [2021-10-28 09:38:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:56,269 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2021-10-28 09:38:56,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-10-28 09:38:56,269 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2021-10-28 09:38:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:38:56,270 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:56,270 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-10-28 09:38:56,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:56,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:56,494 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2021-10-28 09:38:56,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:56,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852549530] [2021-10-28 09:38:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:56,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:56,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:56,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571504351] [2021-10-28 09:38:56,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:56,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:56,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:56,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:56,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:38:56,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:38:56,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:56,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:38:56,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:56,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:56,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852549530] [2021-10-28 09:38:56,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571504351] [2021-10-28 09:38:56,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571504351] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:56,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:56,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:38:56,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882981107] [2021-10-28 09:38:56,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:38:56,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:38:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:56,971 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:57,191 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2021-10-28 09:38:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:38:57,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-28 09:38:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:57,195 INFO L225 Difference]: With dead ends: 182 [2021-10-28 09:38:57,195 INFO L226 Difference]: Without dead ends: 141 [2021-10-28 09:38:57,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:38:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-28 09:38:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 97. [2021-10-28 09:38:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 96 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2021-10-28 09:38:57,210 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 26 [2021-10-28 09:38:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:57,210 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2021-10-28 09:38:57,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2021-10-28 09:38:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:38:57,212 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:57,212 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:57,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:57,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:57,434 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:57,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:57,434 INFO L85 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2021-10-28 09:38:57,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:57,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146417213] [2021-10-28 09:38:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:57,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:57,444 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:57,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020364336] [2021-10-28 09:38:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:57,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:57,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:57,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:57,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:38:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:57,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:38:57,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:57,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:57,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146417213] [2021-10-28 09:38:57,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:57,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020364336] [2021-10-28 09:38:57,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020364336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:57,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:57,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:38:57,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959542417] [2021-10-28 09:38:57,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:38:57,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:38:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:57,654 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-10-28 09:38:57,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:57,683 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2021-10-28 09:38:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:38:57,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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 27 [2021-10-28 09:38:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:57,685 INFO L225 Difference]: With dead ends: 105 [2021-10-28 09:38:57,685 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 09:38:57,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 09:38:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-28 09:38:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.25) internal successors, (115), 96 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2021-10-28 09:38:57,693 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 27 [2021-10-28 09:38:57,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:57,693 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2021-10-28 09:38:57,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-10-28 09:38:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2021-10-28 09:38:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:38:57,695 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:57,695 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:57,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:57,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:57,914 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:57,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:57,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2021-10-28 09:38:57,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:57,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440855185] [2021-10-28 09:38:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:57,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:57,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:57,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522634597] [2021-10-28 09:38:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:57,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:57,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:57,942 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:57,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:38:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:58,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 09:38:58,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:58,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:58,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440855185] [2021-10-28 09:38:58,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:58,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522634597] [2021-10-28 09:38:58,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522634597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:58,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:58,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:38:58,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925249037] [2021-10-28 09:38:58,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:38:58,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:38:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:58,578 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2021-10-28 09:38:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:58,711 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2021-10-28 09:38:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:38:58,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 [2021-10-28 09:38:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:58,713 INFO L225 Difference]: With dead ends: 115 [2021-10-28 09:38:58,713 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 09:38:58,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 09:38:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2021-10-28 09:38:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.24) internal successors, (124), 104 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2021-10-28 09:38:58,722 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 29 [2021-10-28 09:38:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:58,722 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2021-10-28 09:38:58,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2021-10-28 09:38:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2021-10-28 09:38:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:38:58,724 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:58,724 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:58,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:58,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:58,938 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:58,938 INFO L85 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2021-10-28 09:38:58,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:58,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545987731] [2021-10-28 09:38:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:58,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:58,948 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:58,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292139715] [2021-10-28 09:38:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:58,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:58,950 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:58,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:38:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:59,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:38:59,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:59,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:59,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545987731] [2021-10-28 09:38:59,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:59,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292139715] [2021-10-28 09:38:59,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292139715] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:59,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:59,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:38:59,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844218496] [2021-10-28 09:38:59,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:59,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:59,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:59,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:59,243 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 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) [2021-10-28 09:38:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:59,271 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2021-10-28 09:38:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:38:59,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 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 [2021-10-28 09:38:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:59,273 INFO L225 Difference]: With dead ends: 116 [2021-10-28 09:38:59,273 INFO L226 Difference]: Without dead ends: 106 [2021-10-28 09:38:59,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-28 09:38:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-10-28 09:38:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.22) internal successors, (122), 104 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2021-10-28 09:38:59,283 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 30 [2021-10-28 09:38:59,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:59,284 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2021-10-28 09:38:59,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 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) [2021-10-28 09:38:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2021-10-28 09:38:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:38:59,287 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:59,287 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-10-28 09:38:59,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:59,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:38:59,502 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:38:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:59,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2021-10-28 09:38:59,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:59,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182282584] [2021-10-28 09:38:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:59,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:59,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:59,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530452332] [2021-10-28 09:38:59,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:38:59,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:59,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:59,514 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:59,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:38:59,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:38:59,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:59,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:38:59,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:38:59,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:59,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182282584] [2021-10-28 09:38:59,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:59,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530452332] [2021-10-28 09:38:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530452332] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:59,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:59,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:38:59,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835446330] [2021-10-28 09:38:59,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:59,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:39:00,000 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2021-10-28 09:39:00,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:00,166 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2021-10-28 09:39:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:39:00,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 34 [2021-10-28 09:39:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:00,168 INFO L225 Difference]: With dead ends: 123 [2021-10-28 09:39:00,168 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 09:39:00,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:39:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 09:39:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-10-28 09:39:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2021-10-28 09:39:00,180 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 34 [2021-10-28 09:39:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:00,181 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2021-10-28 09:39:00,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2021-10-28 09:39:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2021-10-28 09:39:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:39:00,183 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:00,184 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:00,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:00,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:39:00,409 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2021-10-28 09:39:00,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:00,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815348686] [2021-10-28 09:39:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:00,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:00,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:00,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591831529] [2021-10-28 09:39:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:00,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:00,433 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:00,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:39:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:00,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:39:00,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:01,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:01,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815348686] [2021-10-28 09:39:01,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:01,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591831529] [2021-10-28 09:39:01,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591831529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:01,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:01,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:39:01,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512005334] [2021-10-28 09:39:01,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:39:01,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:39:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:39:01,153 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:01,286 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2021-10-28 09:39:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:39:01,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 09:39:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:01,287 INFO L225 Difference]: With dead ends: 114 [2021-10-28 09:39:01,287 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 09:39:01,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:39:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 09:39:01,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-28 09:39:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.202127659574468) internal successors, (113), 96 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2021-10-28 09:39:01,298 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 34 [2021-10-28 09:39:01,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:01,298 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2021-10-28 09:39:01,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2021-10-28 09:39:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:39:01,299 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:01,299 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:01,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:01,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:39:01,514 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:01,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2021-10-28 09:39:01,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:01,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167774782] [2021-10-28 09:39:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:01,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:01,523 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:01,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802685734] [2021-10-28 09:39:01,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:39:01,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:01,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:01,525 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:01,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:39:01,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:39:01,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:01,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:39:01,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:01,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:01,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167774782] [2021-10-28 09:39:01,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:01,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802685734] [2021-10-28 09:39:01,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802685734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:01,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:01,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:39:01,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399939499] [2021-10-28 09:39:01,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:39:01,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:39:01,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:39:01,873 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:01,913 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2021-10-28 09:39:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:39:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-28 09:39:01,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:01,914 INFO L225 Difference]: With dead ends: 107 [2021-10-28 09:39:01,915 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 09:39:01,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:39:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 09:39:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-28 09:39:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 98 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-10-28 09:39:01,924 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 35 [2021-10-28 09:39:01,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:01,924 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-10-28 09:39:01,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-10-28 09:39:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:39:01,925 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:01,926 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:01,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:02,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:02,142 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2021-10-28 09:39:02,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:02,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104778632] [2021-10-28 09:39:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:02,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:02,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:02,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593963014] [2021-10-28 09:39:02,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:39:02,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:02,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:02,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:02,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:39:02,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:39:02,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:02,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 09:39:02,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:03,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:03,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104778632] [2021-10-28 09:39:03,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:03,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593963014] [2021-10-28 09:39:03,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593963014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:03,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:03,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:39:03,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538519441] [2021-10-28 09:39:03,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:39:03,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:39:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:39:03,106 INFO L87 Difference]: Start difference. First operand 99 states and 115 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) [2021-10-28 09:39:03,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:03,331 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2021-10-28 09:39:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:39:03,331 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 [2021-10-28 09:39:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:03,332 INFO L225 Difference]: With dead ends: 126 [2021-10-28 09:39:03,333 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 09:39:03,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 09:39:03,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2021-10-28 09:39:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 101 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-10-28 09:39:03,342 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 37 [2021-10-28 09:39:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:03,343 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-10-28 09:39:03,343 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) [2021-10-28 09:39:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-10-28 09:39:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:39:03,344 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:03,344 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:03,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:03,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 09:39:03,558 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2021-10-28 09:39:03,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:03,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485171292] [2021-10-28 09:39:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:03,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:03,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:03,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495206484] [2021-10-28 09:39:03,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:39:03,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:03,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:03,581 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:03,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:39:03,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:39:03,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:03,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:39:03,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:03,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:03,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485171292] [2021-10-28 09:39:03,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:03,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495206484] [2021-10-28 09:39:03,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495206484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:03,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:03,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:39:03,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735351477] [2021-10-28 09:39:03,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:39:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:03,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:39:03,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:39:03,999 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2021-10-28 09:39:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:04,039 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2021-10-28 09:39:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:39:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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 [2021-10-28 09:39:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:04,041 INFO L225 Difference]: With dead ends: 121 [2021-10-28 09:39:04,041 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:39:04,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:39:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:39:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-10-28 09:39:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-10-28 09:39:04,050 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 38 [2021-10-28 09:39:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:04,051 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-10-28 09:39:04,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 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) [2021-10-28 09:39:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-10-28 09:39:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-28 09:39:04,052 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:04,052 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:04,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-28 09:39:04,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:39:04,266 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2021-10-28 09:39:04,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:04,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72337766] [2021-10-28 09:39:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:04,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:04,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:04,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662322342] [2021-10-28 09:39:04,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:39:04,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:04,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:04,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:39:04,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:39:04,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:04,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:39:04,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:04,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:04,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72337766] [2021-10-28 09:39:04,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:04,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662322342] [2021-10-28 09:39:04,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662322342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:04,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:04,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:39:04,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624990604] [2021-10-28 09:39:04,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:39:04,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:04,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:39:04,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:39:04,714 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:04,766 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-10-28 09:39:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:39:04,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-28 09:39:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:04,767 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:39:04,768 INFO L226 Difference]: Without dead ends: 112 [2021-10-28 09:39:04,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:39:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-28 09:39:04,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-28 09:39:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.165137614678899) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-10-28 09:39:04,778 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 43 [2021-10-28 09:39:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:04,778 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-10-28 09:39:04,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-10-28 09:39:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:39:04,779 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:04,780 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 09:39:04,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:05,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:05,006 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:05,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2021-10-28 09:39:05,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:05,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718754182] [2021-10-28 09:39:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:05,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:05,013 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:05,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940736329] [2021-10-28 09:39:05,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:39:05,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:05,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:05,015 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:05,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:39:05,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:39:05,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:05,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:39:05,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 09:39:05,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:05,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718754182] [2021-10-28 09:39:05,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:05,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940736329] [2021-10-28 09:39:05,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940736329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:05,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:05,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:39:05,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863468448] [2021-10-28 09:39:05,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:39:05,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:05,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:39:05,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:39:05,968 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 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) [2021-10-28 09:39:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:06,078 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2021-10-28 09:39:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:39:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 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 44 [2021-10-28 09:39:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:06,079 INFO L225 Difference]: With dead ends: 112 [2021-10-28 09:39:06,080 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 09:39:06,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:39:06,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 09:39:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2021-10-28 09:39:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-10-28 09:39:06,091 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 44 [2021-10-28 09:39:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:06,091 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-10-28 09:39:06,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 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) [2021-10-28 09:39:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-10-28 09:39:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:39:06,092 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:06,092 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:06,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:06,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:06,306 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2021-10-28 09:39:06,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:06,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124276066] [2021-10-28 09:39:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:06,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:06,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:06,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253052456] [2021-10-28 09:39:06,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:39:06,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:06,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:06,322 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:06,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:39:06,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:39:06,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:06,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 09:39:06,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:07,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:07,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124276066] [2021-10-28 09:39:07,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:07,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253052456] [2021-10-28 09:39:07,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253052456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:07,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:07,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:39:07,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095394621] [2021-10-28 09:39:07,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:39:07,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:39:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:07,548 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:07,926 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-10-28 09:39:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:39:07,927 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 09:39:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:07,928 INFO L225 Difference]: With dead ends: 128 [2021-10-28 09:39:07,928 INFO L226 Difference]: Without dead ends: 101 [2021-10-28 09:39:07,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:39:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-28 09:39:07,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-10-28 09:39:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.1326530612244898) internal successors, (111), 99 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) [2021-10-28 09:39:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2021-10-28 09:39:07,938 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 45 [2021-10-28 09:39:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2021-10-28 09:39:07,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2021-10-28 09:39:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:39:07,939 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:07,939 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:07,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:08,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:08,140 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:08,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash 187164747, now seen corresponding path program 1 times [2021-10-28 09:39:08,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:08,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002903285] [2021-10-28 09:39:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:08,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:08,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:08,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754798361] [2021-10-28 09:39:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:08,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:08,170 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:08,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:39:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:08,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:39:08,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:39:08,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:08,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002903285] [2021-10-28 09:39:08,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:08,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754798361] [2021-10-28 09:39:08,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754798361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:08,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:39:08,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:39:08,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506493603] [2021-10-28 09:39:08,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:39:08,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:39:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:39:08,901 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:08,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:08,987 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2021-10-28 09:39:08,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:39:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 09:39:08,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:08,989 INFO L225 Difference]: With dead ends: 151 [2021-10-28 09:39:08,989 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 09:39:08,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:39:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 09:39:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72. [2021-10-28 09:39:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 71 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2021-10-28 09:39:08,999 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 45 [2021-10-28 09:39:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:08,999 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2021-10-28 09:39:09,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2021-10-28 09:39:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:39:09,000 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:09,000 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:09,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:09,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 09:39:09,226 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 09:39:09,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:09,226 INFO L85 PathProgramCache]: Analyzing trace with hash -552854946, now seen corresponding path program 4 times [2021-10-28 09:39:09,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:09,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255444784] [2021-10-28 09:39:09,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:09,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:09,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:09,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559467276] [2021-10-28 09:39:09,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:39:09,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:09,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:09,240 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:09,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:39:09,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:39:09,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-28 09:39:09,665 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:39:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:39:09,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:39:09,714 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:39:09,715 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:09,717 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:09,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:09,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:09,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:09,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:09,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:39:09,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:09,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 09:39:09,948 INFO L731 BasicCegarLoop]: Path program histogram: [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:09,951 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:39:10,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:39:10 BoogieIcfgContainer [2021-10-28 09:39:10,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:39:10,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:39:10,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:39:10,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:39:10,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:38:51" (3/4) ... [2021-10-28 09:39:10,006 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:39:10,081 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:39:10,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:39:10,082 INFO L168 Benchmark]: Toolchain (without parser) took 18881.60 ms. Allocated memory was 92.3 MB in the beginning and 144.7 MB in the end (delta: 52.4 MB). Free memory was 59.2 MB in the beginning and 90.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:10,083 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:39:10,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.31 ms. Allocated memory is still 92.3 MB. Free memory was 58.9 MB in the beginning and 69.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:10,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.09 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:10,083 INFO L168 Benchmark]: Boogie Preprocessor took 37.88 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 66.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:10,084 INFO L168 Benchmark]: RCFGBuilder took 391.11 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 55.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:10,084 INFO L168 Benchmark]: TraceAbstraction took 18044.25 ms. Allocated memory was 92.3 MB in the beginning and 144.7 MB in the end (delta: 52.4 MB). Free memory was 55.0 MB in the beginning and 94.4 MB in the end (delta: -39.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:10,084 INFO L168 Benchmark]: Witness Printer took 77.72 ms. Allocated memory is still 144.7 MB. Free memory was 94.4 MB in the beginning and 90.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:39:10,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.31 ms. Allocated memory is still 92.3 MB. Free memory was 58.9 MB in the beginning and 69.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.09 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.88 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 66.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 391.11 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 55.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18044.25 ms. Allocated memory was 92.3 MB in the beginning and 144.7 MB in the end (delta: 52.4 MB). Free memory was 55.0 MB in the beginning and 94.4 MB in the end (delta: -39.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 77.72 ms. Allocated memory is still 144.7 MB. Free memory was 94.4 MB in the beginning and 90.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND TRUE !(r >= d) VAL [counter=4] [L44] EXPR counter++ VAL [counter=5] [L44] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=5] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=5] [L44] EXPR counter++ VAL [counter=6] [L44] COND FALSE !(counter++<5) [L15] COND TRUE !(cond) VAL [counter=6] [L17] reach_error() VAL [counter=6] - UnprovableResult [Line: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 17.9s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 639 SDtfs, 690 SDslu, 1682 SDs, 0 SdLazy, 1567 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 618 GetRequests, 480 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=19, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 199 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 646 NumberOfCodeBlocks, 599 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 4218 SizeOfPredicates, 86 NumberOfNonLiveVariables, 2423 ConjunctsInSsa, 286 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 124/389 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! [2021-10-28 09:39:10,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_197c2c3b-8e27-45f2-ac17-bd2830f2b312/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...