./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.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_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/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_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/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_18460a48-f513-4ed6-bdf7-95dbd1c98071/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 f5697d76d3e5ae232d0e056ee307ac88ca38e983a94c4765bc5d51f77e79d2f7 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:37:42,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:37:42,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:37:42,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:37:42,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:37:42,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:37:42,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:37:42,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:37:42,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:37:42,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:37:42,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:37:42,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:37:42,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:37:42,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:37:42,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:37:42,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:37:42,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:37:42,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:37:42,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:37:42,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:37:42,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:37:42,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:37:42,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:37:42,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:37:42,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:37:42,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:37:42,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:37:42,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:37:42,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:37:42,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:37:42,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:37:42,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:37:42,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:37:42,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:37:42,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:37:42,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:37:42,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:37:42,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:37:42,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:37:42,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:37:42,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:37:42,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:37:42,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:37:42,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:37:42,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:37:42,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:37:42,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:37:42,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:37:42,175 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:37:42,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:37:42,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:37:42,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:37:42,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:37:42,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:37:42,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:37:42,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:37:42,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:37:42,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:37:42,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:37:42,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:37:42,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:37:42,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:37:42,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:37:42,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:37:42,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:42,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:37:42,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:37:42,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:37:42,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:37:42,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:37:42,182 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:37:42,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:37:42,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:37:42,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:37:42,185 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_18460a48-f513-4ed6-bdf7-95dbd1c98071/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5697d76d3e5ae232d0e056ee307ac88ca38e983a94c4765bc5d51f77e79d2f7 [2021-10-28 09:37:42,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:37:42,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:37:42,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:37:42,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:37:42,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:37:42,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-10-28 09:37:42,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/data/d48583441/7682aee0b4a042cd8ca243f9240cbc20/FLAG95fbbfb1f [2021-10-28 09:37:43,103 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:37:43,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2021-10-28 09:37:43,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/data/d48583441/7682aee0b4a042cd8ca243f9240cbc20/FLAG95fbbfb1f [2021-10-28 09:37:43,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/data/d48583441/7682aee0b4a042cd8ca243f9240cbc20 [2021-10-28 09:37:43,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:37:43,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:37:43,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:43,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:37:43,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:37:43,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169e186e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43, skipping insertion in model container [2021-10-28 09:37:43,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:37:43,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:37:43,784 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_18460a48-f513-4ed6-bdf7-95dbd1c98071/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c[490,503] [2021-10-28 09:37:43,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:43,816 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:37:43,828 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_18460a48-f513-4ed6-bdf7-95dbd1c98071/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c[490,503] [2021-10-28 09:37:43,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:43,853 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:37:43,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43 WrapperNode [2021-10-28 09:37:43,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:43,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:37:43,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:37:43,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:37:43,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:37:43,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:37:43,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:37:43,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:37:43,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:37:43,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:37:43,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:37:43,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:37:43,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (1/1) ... [2021-10-28 09:37:43,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:43,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:44,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:37:44,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:37:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:37:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:37:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:37:44,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:37:44,480 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-28 09:37:44,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:44 BoogieIcfgContainer [2021-10-28 09:37:44,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:37:44,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:37:44,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:37:44,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:37:44,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:43" (1/3) ... [2021-10-28 09:37:44,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707c9775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:44, skipping insertion in model container [2021-10-28 09:37:44,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:43" (2/3) ... [2021-10-28 09:37:44,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707c9775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:44, skipping insertion in model container [2021-10-28 09:37:44,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:44" (3/3) ... [2021-10-28 09:37:44,492 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2021-10-28 09:37:44,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:37:44,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-28 09:37:44,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:37:44,571 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 09:37:44,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 09:37:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:37:44,614 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:44,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:44,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:44,621 INFO L85 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2021-10-28 09:37:44,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:44,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247155539] [2021-10-28 09:37:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:44,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:44,786 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 09:37:44,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:44,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247155539] [2021-10-28 09:37:44,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247155539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:44,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:44,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:37:44,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363762232] [2021-10-28 09:37:44,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:37:44,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:37:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:37:44,812 INFO L87 Difference]: Start difference. First operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:44,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:44,831 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2021-10-28 09:37:44,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:37:44,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 09:37:44,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:44,841 INFO L225 Difference]: With dead ends: 87 [2021-10-28 09:37:44,842 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 09:37:44,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:37:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 09:37:44,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 09:37:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 09:37:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-28 09:37:44,881 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2021-10-28 09:37:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:44,881 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-28 09:37:44,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-28 09:37:44,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:37:44,883 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:44,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:44,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:37:44,884 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:44,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2021-10-28 09:37:44,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:44,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84320516] [2021-10-28 09:37:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:44,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:44,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:44,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578739008] [2021-10-28 09:37:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:44,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:44,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:44,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:44,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:37:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:44,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:37:44,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:45,183 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 09:37:45,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:45,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84320516] [2021-10-28 09:37:45,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:45,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578739008] [2021-10-28 09:37:45,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578739008] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:45,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:45,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:37:45,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938044403] [2021-10-28 09:37:45,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:37:45,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:37:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:37:45,195 INFO L87 Difference]: Start difference. First operand 41 states and 42 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 09:37:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:45,339 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-28 09:37:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:37:45,340 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 09:37:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:45,341 INFO L225 Difference]: With dead ends: 69 [2021-10-28 09:37:45,342 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 09:37:45,343 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 09:37:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 09:37:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2021-10-28 09:37:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 42 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 09:37:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-10-28 09:37:45,351 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2021-10-28 09:37:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:45,352 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-10-28 09:37:45,352 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 09:37:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-10-28 09:37:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:37:45,353 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:45,353 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:45,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 09:37:45,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:45,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2021-10-28 09:37:45,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:45,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208799402] [2021-10-28 09:37:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:45,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:45,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:45,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167940467] [2021-10-28 09:37:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:45,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:45,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:45,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:45,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:37:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:45,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:37:45,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:45,941 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 09:37:45,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:45,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208799402] [2021-10-28 09:37:45,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:45,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167940467] [2021-10-28 09:37:45,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167940467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:45,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:45,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:37:45,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925077734] [2021-10-28 09:37:45,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:37:45,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:37:45,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:37:45,946 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:37:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:46,160 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-10-28 09:37:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:37:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:37:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:46,162 INFO L225 Difference]: With dead ends: 79 [2021-10-28 09:37:46,162 INFO L226 Difference]: Without dead ends: 77 [2021-10-28 09:37:46,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:37:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-28 09:37:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-10-28 09:37:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-28 09:37:46,171 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2021-10-28 09:37:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:46,172 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 09:37:46,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:37:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-10-28 09:37:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:37:46,173 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:46,174 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:46,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:46,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:46,395 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:46,395 INFO L85 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2021-10-28 09:37:46,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:46,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740550047] [2021-10-28 09:37:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:46,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:46,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:46,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930746037] [2021-10-28 09:37:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:46,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:46,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:46,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:46,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:37:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:46,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 09:37:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:47,121 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 09:37:47,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:47,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740550047] [2021-10-28 09:37:47,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:47,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930746037] [2021-10-28 09:37:47,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930746037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:47,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:47,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:37:47,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599602705] [2021-10-28 09:37:47,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:37:47,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:37:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:37:47,129 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:47,335 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-28 09:37:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:37:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 09:37:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:47,337 INFO L225 Difference]: With dead ends: 63 [2021-10-28 09:37:47,338 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 09:37:47,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:37:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 09:37:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 09:37:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 09:37:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-10-28 09:37:47,347 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2021-10-28 09:37:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:47,348 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-10-28 09:37:47,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-10-28 09:37:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:37:47,349 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:47,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:47,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:47,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:47,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2021-10-28 09:37:47,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:47,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375865615] [2021-10-28 09:37:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:47,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:47,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:47,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382362612] [2021-10-28 09:37:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:47,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:47,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:47,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:47,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:37:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:47,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:37:47,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:48,147 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 09:37:48,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:48,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375865615] [2021-10-28 09:37:48,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:48,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382362612] [2021-10-28 09:37:48,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382362612] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:48,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:48,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:37:48,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348575763] [2021-10-28 09:37:48,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:37:48,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:37:48,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:37:48,151 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 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 09:37:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:48,304 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-28 09:37:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:37:48,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-28 09:37:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:48,305 INFO L225 Difference]: With dead ends: 61 [2021-10-28 09:37:48,305 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 09:37:48,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:37:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 09:37:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-10-28 09:37:48,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 53 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 09:37:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-28 09:37:48,313 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2021-10-28 09:37:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:48,314 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-28 09:37:48,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 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 09:37:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-28 09:37:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:37:48,315 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:48,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:48,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:48,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:48,516 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2021-10-28 09:37:48,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:48,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130049280] [2021-10-28 09:37:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:48,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:48,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:48,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277675078] [2021-10-28 09:37:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:48,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:48,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:48,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:48,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:37:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:48,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:37:48,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:49,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:49,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130049280] [2021-10-28 09:37:49,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:49,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277675078] [2021-10-28 09:37:49,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277675078] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:49,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:49,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:37:49,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393128208] [2021-10-28 09:37:49,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:37:49,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:37:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:37:49,086 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 09:37:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:49,192 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-10-28 09:37:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:37:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-28 09:37:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:49,197 INFO L225 Difference]: With dead ends: 63 [2021-10-28 09:37:49,197 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 09:37:49,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:37:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 09:37:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 09:37:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1875) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-10-28 09:37:49,223 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2021-10-28 09:37:49,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:49,223 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-10-28 09:37:49,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 09:37:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-10-28 09:37:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:37:49,225 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:49,225 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:49,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:49,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:37:49,451 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2021-10-28 09:37:49,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:49,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963802057] [2021-10-28 09:37:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:49,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:49,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:49,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994175057] [2021-10-28 09:37:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:49,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:49,471 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:49,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:37:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:49,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:37:49,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:49,762 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 09:37:49,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:49,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963802057] [2021-10-28 09:37:49,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:49,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994175057] [2021-10-28 09:37:49,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994175057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:49,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:49,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:37:49,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825670247] [2021-10-28 09:37:49,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:37:49,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:49,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:37:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:37:49,771 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 5 states, 5 states have (on average 5.4) 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 09:37:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:49,861 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-10-28 09:37:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:37:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) 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 09:37:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:49,863 INFO L225 Difference]: With dead ends: 104 [2021-10-28 09:37:49,863 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 09:37:49,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 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 09:37:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 09:37:49,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2021-10-28 09:37:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 73 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 09:37:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-10-28 09:37:49,888 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 27 [2021-10-28 09:37:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:49,890 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-10-28 09:37:49,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) 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 09:37:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-10-28 09:37:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:37:49,893 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:49,893 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:49,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:50,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:50,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:50,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2021-10-28 09:37:50,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:50,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254481921] [2021-10-28 09:37:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:50,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:50,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:50,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234055090] [2021-10-28 09:37:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:50,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:50,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:50,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:37:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:50,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:37:50,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:50,440 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 09:37:50,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:50,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254481921] [2021-10-28 09:37:50,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:50,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234055090] [2021-10-28 09:37:50,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234055090] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:50,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:50,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:37:50,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970775728] [2021-10-28 09:37:50,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:37:50,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:50,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:37:50,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:37:50,444 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:50,629 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-10-28 09:37:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:37:50,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-28 09:37:50,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:50,631 INFO L225 Difference]: With dead ends: 165 [2021-10-28 09:37:50,631 INFO L226 Difference]: Without dead ends: 157 [2021-10-28 09:37:50,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:37:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-28 09:37:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 109. [2021-10-28 09:37:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.2718446601941749) internal successors, (131), 108 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-10-28 09:37:50,663 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 30 [2021-10-28 09:37:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:50,663 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-10-28 09:37:50,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-10-28 09:37:50,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:37:50,664 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:50,665 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:50,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:50,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:50,883 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:50,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:50,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2021-10-28 09:37:50,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:50,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656679417] [2021-10-28 09:37:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:50,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:50,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:50,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523831075] [2021-10-28 09:37:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:50,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:50,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:50,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:50,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:37:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:51,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 09:37:51,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:51,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:51,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656679417] [2021-10-28 09:37:51,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:51,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523831075] [2021-10-28 09:37:51,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523831075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:51,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:51,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:37:51,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095797992] [2021-10-28 09:37:51,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:37:51,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:37:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:37:51,334 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:51,431 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2021-10-28 09:37:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:37:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-28 09:37:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:51,434 INFO L225 Difference]: With dead ends: 176 [2021-10-28 09:37:51,435 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 09:37:51,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:37:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 09:37:51,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-10-28 09:37:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.2847682119205297) internal successors, (194), 156 states have internal predecessors, (194), 0 states have call successors, (0), 0 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 09:37:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2021-10-28 09:37:51,455 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2021-10-28 09:37:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:51,455 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2021-10-28 09:37:51,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2021-10-28 09:37:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:37:51,457 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:51,457 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:51,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:51,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 09:37:51,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2021-10-28 09:37:51,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:51,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754950984] [2021-10-28 09:37:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:51,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:51,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:51,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988137206] [2021-10-28 09:37:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:51,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:51,702 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:51,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:37:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:51,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 09:37:51,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:52,645 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 09:37:52,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:52,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754950984] [2021-10-28 09:37:52,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:52,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988137206] [2021-10-28 09:37:52,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988137206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:52,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:52,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:37:52,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202083564] [2021-10-28 09:37:52,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:37:52,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:37:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:37:52,649 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 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 09:37:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:52,930 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2021-10-28 09:37:52,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:37:52,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 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 09:37:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:52,932 INFO L225 Difference]: With dead ends: 167 [2021-10-28 09:37:52,932 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 09:37:52,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:37:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 09:37:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-10-28 09:37:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.271523178807947) internal successors, (192), 156 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 09:37:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2021-10-28 09:37:52,954 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 34 [2021-10-28 09:37:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:52,955 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2021-10-28 09:37:52,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 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 09:37:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2021-10-28 09:37:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:37:52,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:52,958 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:53,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:53,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:37:53,174 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2021-10-28 09:37:53,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:53,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672512045] [2021-10-28 09:37:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:53,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:53,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:53,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553555897] [2021-10-28 09:37:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:53,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:53,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:53,205 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:53,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:37:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:53,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-28 09:37:53,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:54,198 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 09:37:54,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:54,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672512045] [2021-10-28 09:37:54,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:54,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553555897] [2021-10-28 09:37:54,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553555897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:54,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:54,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:37:54,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451450929] [2021-10-28 09:37:54,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:37:54,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:37:54,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:37:54,201 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:54,402 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2021-10-28 09:37:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:37:54,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-28 09:37:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:54,405 INFO L225 Difference]: With dead ends: 172 [2021-10-28 09:37:54,405 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 09:37:54,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:37:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 09:37:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2021-10-28 09:37:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 151 states have (on average 1.2582781456953642) internal successors, (190), 156 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2021-10-28 09:37:54,423 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 36 [2021-10-28 09:37:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:54,424 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2021-10-28 09:37:54,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2021-10-28 09:37:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:37:54,425 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:54,425 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:54,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:54,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 09:37:54,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2021-10-28 09:37:54,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:54,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631688856] [2021-10-28 09:37:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:54,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:54,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:54,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133596764] [2021-10-28 09:37:54,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:37:54,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:54,665 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:54,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:37:54,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:37:54,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:37:54,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-28 09:37:54,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:55,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:55,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631688856] [2021-10-28 09:37:55,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:55,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133596764] [2021-10-28 09:37:55,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133596764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:55,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:55,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 09:37:55,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398686835] [2021-10-28 09:37:55,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:37:55,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:55,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:37:55,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:37:55,485 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:56,118 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2021-10-28 09:37:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:37:56,119 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-28 09:37:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:56,137 INFO L225 Difference]: With dead ends: 270 [2021-10-28 09:37:56,138 INFO L226 Difference]: Without dead ends: 268 [2021-10-28 09:37:56,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:37:56,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-28 09:37:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 202. [2021-10-28 09:37:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.2653061224489797) internal successors, (248), 201 states have internal predecessors, (248), 0 states have call successors, (0), 0 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 09:37:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 248 transitions. [2021-10-28 09:37:56,164 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 248 transitions. Word has length 36 [2021-10-28 09:37:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:56,164 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 248 transitions. [2021-10-28 09:37:56,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 248 transitions. [2021-10-28 09:37:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 09:37:56,166 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:56,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:56,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:56,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:56,379 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:56,379 INFO L85 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2021-10-28 09:37:56,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:56,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145344693] [2021-10-28 09:37:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:56,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:56,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:56,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615677789] [2021-10-28 09:37:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:56,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:56,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:56,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:56,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:37:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:56,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 09:37:56,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:57,899 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 09:37:57,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:57,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145344693] [2021-10-28 09:37:57,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:57,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615677789] [2021-10-28 09:37:57,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615677789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:57,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:57,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:37:57,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698945194] [2021-10-28 09:37:57,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:37:57,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:57,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:37:57,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:37:57,903 INFO L87 Difference]: Start difference. First operand 202 states and 248 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:58,515 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2021-10-28 09:37:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:37:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-28 09:37:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:58,517 INFO L225 Difference]: With dead ends: 247 [2021-10-28 09:37:58,517 INFO L226 Difference]: Without dead ends: 241 [2021-10-28 09:37:58,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:37:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-10-28 09:37:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2021-10-28 09:37:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 228 states have (on average 1.2587719298245614) internal successors, (287), 233 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 09:37:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2021-10-28 09:37:58,548 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 39 [2021-10-28 09:37:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:58,548 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2021-10-28 09:37:58,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:37:58,548 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2021-10-28 09:37:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:37:58,549 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:58,549 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:58,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:58,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:37:58,762 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:58,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2021-10-28 09:37:58,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:58,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110450046] [2021-10-28 09:37:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:58,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:58,775 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:58,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073512818] [2021-10-28 09:37:58,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:37:58,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:58,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:58,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:58,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:37:59,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:37:59,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:37:59,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:37:59,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:59,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:59,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110450046] [2021-10-28 09:37:59,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:37:59,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073512818] [2021-10-28 09:37:59,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073512818] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:59,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:59,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:37:59,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924427582] [2021-10-28 09:37:59,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:37:59,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:37:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:37:59,318 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 09:37:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:59,410 INFO L93 Difference]: Finished difference Result 302 states and 365 transitions. [2021-10-28 09:37:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:37:59,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-28 09:37:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:59,412 INFO L225 Difference]: With dead ends: 302 [2021-10-28 09:37:59,412 INFO L226 Difference]: Without dead ends: 210 [2021-10-28 09:37:59,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 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 09:37:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-28 09:37:59,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 190. [2021-10-28 09:37:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 184 states have (on average 1.201086956521739) internal successors, (221), 189 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 09:37:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2021-10-28 09:37:59,437 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 44 [2021-10-28 09:37:59,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:59,438 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2021-10-28 09:37:59,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 09:37:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2021-10-28 09:37:59,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:37:59,438 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:59,439 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:59,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:59,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:37:59,653 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:37:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2021-10-28 09:37:59,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:59,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027603961] [2021-10-28 09:37:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:59,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:59,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:37:59,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109577758] [2021-10-28 09:37:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:59,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:59,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:59,666 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:59,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:38:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:00,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-28 09:38:00,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:01,393 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 09:38:01,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:01,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027603961] [2021-10-28 09:38:01,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:01,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109577758] [2021-10-28 09:38:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109577758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:01,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:01,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:38:01,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099360146] [2021-10-28 09:38:01,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:38:01,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:38:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:38:01,396 INFO L87 Difference]: Start difference. First operand 190 states and 221 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 09:38:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:02,316 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2021-10-28 09:38:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:38:02,316 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 09:38:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:02,320 INFO L225 Difference]: With dead ends: 201 [2021-10-28 09:38:02,320 INFO L226 Difference]: Without dead ends: 199 [2021-10-28 09:38:02,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:38:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-10-28 09:38:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 158. [2021-10-28 09:38:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 157 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 183 transitions. [2021-10-28 09:38:02,347 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 183 transitions. Word has length 45 [2021-10-28 09:38:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:02,348 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 183 transitions. [2021-10-28 09:38:02,350 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 09:38:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 183 transitions. [2021-10-28 09:38:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:38:02,351 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:02,351 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:02,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-28 09:38:02,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:38:02,571 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:38:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -397708876, now seen corresponding path program 3 times [2021-10-28 09:38:02,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:02,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969615070] [2021-10-28 09:38:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:02,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:02,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:02,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052988356] [2021-10-28 09:38:02,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:38:02,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:02,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:02,583 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:02,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:38:03,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:38:03,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:03,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-28 09:38:03,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 09:38:03,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:03,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969615070] [2021-10-28 09:38:03,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:03,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052988356] [2021-10-28 09:38:03,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052988356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:03,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:03,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:38:03,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115689644] [2021-10-28 09:38:03,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:38:03,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:38:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:03,708 INFO L87 Difference]: Start difference. First operand 158 states and 183 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:03,953 INFO L93 Difference]: Finished difference Result 158 states and 183 transitions. [2021-10-28 09:38:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:38:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 09:38:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:03,954 INFO L225 Difference]: With dead ends: 158 [2021-10-28 09:38:03,954 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 09:38:03,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:38:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 09:38:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 121. [2021-10-28 09:38:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 120 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 09:38:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2021-10-28 09:38:03,985 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 45 [2021-10-28 09:38:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:03,986 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2021-10-28 09:38:03,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2021-10-28 09:38:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 09:38:03,987 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:03,987 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:04,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:04,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 09:38:04,200 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:38:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2021-10-28 09:38:04,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:04,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95146337] [2021-10-28 09:38:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:04,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:04,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:04,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171014896] [2021-10-28 09:38:04,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:04,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:04,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:04,213 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:04,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:38:04,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:38:04,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:04,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-28 09:38:04,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:05,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:05,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95146337] [2021-10-28 09:38:05,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:05,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171014896] [2021-10-28 09:38:05,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171014896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:05,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:05,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 09:38:05,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147085441] [2021-10-28 09:38:05,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:38:05,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:05,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:38:05,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:38:05,903 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:07,229 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2021-10-28 09:38:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:38:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-28 09:38:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:07,231 INFO L225 Difference]: With dead ends: 161 [2021-10-28 09:38:07,231 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 09:38:07,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:38:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 09:38:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2021-10-28 09:38:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.1575342465753424) internal successors, (169), 150 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2021-10-28 09:38:07,250 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 48 [2021-10-28 09:38:07,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:07,250 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2021-10-28 09:38:07,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2021-10-28 09:38:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:38:07,251 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:07,252 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:07,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-28 09:38:07,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 09:38:07,454 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:38:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:07,454 INFO L85 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2021-10-28 09:38:07,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:07,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043195814] [2021-10-28 09:38:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:07,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:07,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:38:07,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692847301] [2021-10-28 09:38:07,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:38:07,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:07,486 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:07,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:38:08,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:38:08,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:08,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 09:38:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-28 09:38:16,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043195814] [2021-10-28 09:38:16,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:38:16,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692847301] [2021-10-28 09:38:16,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692847301] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:16,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:16,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:38:16,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331443146] [2021-10-28 09:38:16,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:38:16,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:38:16,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=114, Unknown=3, NotChecked=0, Total=156 [2021-10-28 09:38:16,011 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 09:38:48,525 WARN L207 SmtUtils]: Spent 18.10 s on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-10-28 09:39:06,662 WARN L207 SmtUtils]: Spent 16.12 s on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2021-10-28 09:39:26,852 WARN L207 SmtUtils]: Spent 18.16 s on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-10-28 09:39:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:58,424 INFO L93 Difference]: Finished difference Result 153 states and 170 transitions. [2021-10-28 09:39:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:39:58,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-28 09:39:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:58,426 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:39:58,426 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 09:39:58,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 79.1s TimeCoverageRelationStatistics Valid=141, Invalid=398, Unknown=13, NotChecked=0, Total=552 [2021-10-28 09:39:58,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 09:39:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 133. [2021-10-28 09:39:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 132 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 09:39:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2021-10-28 09:39:58,451 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 51 [2021-10-28 09:39:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:58,451 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2021-10-28 09:39:58,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 09:39:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2021-10-28 09:39:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:39:58,452 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:58,452 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:58,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-28 09:39:58,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:39:58,653 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:39:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2078434191, now seen corresponding path program 1 times [2021-10-28 09:39:58,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:58,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451096176] [2021-10-28 09:39:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:58,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:58,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:58,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321652245] [2021-10-28 09:39:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:58,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:58,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:58,694 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:58,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:39:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:59,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:39:59,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:39:59,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:59,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451096176] [2021-10-28 09:39:59,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:39:59,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321652245] [2021-10-28 09:39:59,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321652245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:59,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:59,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:39:59,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963332715] [2021-10-28 09:39:59,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:39:59,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:59,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:39:59,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:39:59,475 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:59,699 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2021-10-28 09:39:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:39:59,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 09:39:59,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:59,701 INFO L225 Difference]: With dead ends: 219 [2021-10-28 09:39:59,702 INFO L226 Difference]: Without dead ends: 213 [2021-10-28 09:39:59,702 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:39:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-28 09:39:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 163. [2021-10-28 09:39:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 159 states have (on average 1.1320754716981132) internal successors, (180), 162 states have internal predecessors, (180), 0 states have call successors, (0), 0 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 09:39:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 180 transitions. [2021-10-28 09:39:59,734 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 180 transitions. Word has length 53 [2021-10-28 09:39:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:59,734 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 180 transitions. [2021-10-28 09:39:59,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:39:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 180 transitions. [2021-10-28 09:39:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:39:59,735 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:59,735 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:59,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:59,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:59,955 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:39:59,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:59,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2074616969, now seen corresponding path program 1 times [2021-10-28 09:39:59,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:59,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537930976] [2021-10-28 09:39:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:59,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:59,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:39:59,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610620822] [2021-10-28 09:39:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:59,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:59,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:59,983 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:40:00,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:40:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:00,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:40:00,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:40:00,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:40:00,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537930976] [2021-10-28 09:40:00,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:40:00,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610620822] [2021-10-28 09:40:00,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610620822] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:40:00,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:40:00,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:40:00,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411811735] [2021-10-28 09:40:00,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:40:00,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:00,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:40:00,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:40:00,879 INFO L87 Difference]: Start difference. First operand 163 states and 180 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 09:40:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:40:01,334 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2021-10-28 09:40:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:40:01,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 09:40:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:40:01,336 INFO L225 Difference]: With dead ends: 165 [2021-10-28 09:40:01,336 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 09:40:01,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:40:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 09:40:01,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 97. [2021-10-28 09:40:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:40:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2021-10-28 09:40:01,359 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 53 [2021-10-28 09:40:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:40:01,360 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2021-10-28 09:40:01,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 09:40:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2021-10-28 09:40:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-28 09:40:01,361 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:40:01,361 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:40:01,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:40:01,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:01,587 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:40:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:40:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1634778368, now seen corresponding path program 2 times [2021-10-28 09:40:01,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:40:01,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942294746] [2021-10-28 09:40:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:01,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:40:01,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:40:01,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108741777] [2021-10-28 09:40:01,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:40:01,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:40:01,606 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:40:01,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:40:03,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:40:03,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:40:03,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-28 09:40:03,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-28 09:40:11,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:40:11,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942294746] [2021-10-28 09:40:11,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:40:11,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108741777] [2021-10-28 09:40:11,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108741777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:11,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:40:11,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 09:40:11,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310083959] [2021-10-28 09:40:11,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:40:11,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:40:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:40:11,739 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:40:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:40:15,225 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-10-28 09:40:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:40:15,226 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-28 09:40:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:40:15,226 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:40:15,227 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 09:40:15,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:40:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 09:40:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 74. [2021-10-28 09:40:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 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 09:40:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-10-28 09:40:15,244 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 54 [2021-10-28 09:40:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:40:15,245 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-10-28 09:40:15,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:40:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-10-28 09:40:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 09:40:15,246 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:40:15,246 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:40:15,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:40:15,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:15,459 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:40:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:40:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash -841924230, now seen corresponding path program 1 times [2021-10-28 09:40:15,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:40:15,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738390725] [2021-10-28 09:40:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:15,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:40:15,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:40:15,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713290248] [2021-10-28 09:40:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:15,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:15,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:40:15,479 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:40:15,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:40:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:16,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-28 09:40:16,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:40:18,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:40:18,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738390725] [2021-10-28 09:40:18,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:40:18,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713290248] [2021-10-28 09:40:18,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713290248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:18,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:40:18,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-28 09:40:18,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070118855] [2021-10-28 09:40:18,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:40:18,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:40:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:40:18,701 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 09:40:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:40:19,620 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2021-10-28 09:40:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:40:19,621 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-10-28 09:40:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:40:19,622 INFO L225 Difference]: With dead ends: 139 [2021-10-28 09:40:19,622 INFO L226 Difference]: Without dead ends: 137 [2021-10-28 09:40:19,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:40:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-28 09:40:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 86. [2021-10-28 09:40:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 09:40:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-10-28 09:40:19,645 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 55 [2021-10-28 09:40:19,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:40:19,645 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-10-28 09:40:19,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 09:40:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-10-28 09:40:19,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 09:40:19,646 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:40:19,646 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:40:19,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:40:19,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:19,866 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:40:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:40:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1920559695, now seen corresponding path program 2 times [2021-10-28 09:40:19,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:40:19,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082582156] [2021-10-28 09:40:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:19,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:40:19,891 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:40:19,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722927727] [2021-10-28 09:40:19,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:40:19,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:19,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:40:19,914 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:40:19,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:40:20,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:40:20,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:40:20,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-28 09:40:20,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:40:24,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:40:24,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082582156] [2021-10-28 09:40:24,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:40:24,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722927727] [2021-10-28 09:40:24,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722927727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:24,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:40:24,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-28 09:40:24,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483459436] [2021-10-28 09:40:24,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:40:24,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:40:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:40:24,783 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:40:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:40:26,384 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2021-10-28 09:40:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:40:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-28 09:40:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:40:26,386 INFO L225 Difference]: With dead ends: 140 [2021-10-28 09:40:26,386 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 09:40:26,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:40:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 09:40:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 95. [2021-10-28 09:40:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 94 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:40:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2021-10-28 09:40:26,429 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 61 [2021-10-28 09:40:26,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:40:26,430 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2021-10-28 09:40:26,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:40:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2021-10-28 09:40:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 09:40:26,431 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:40:26,431 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:40:26,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:40:26,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 09:40:26,659 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:40:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:40:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash -132092270, now seen corresponding path program 3 times [2021-10-28 09:40:26,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:40:26,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774710149] [2021-10-28 09:40:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:26,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:40:26,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:40:26,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916641209] [2021-10-28 09:40:26,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:40:26,676 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:26,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:40:26,677 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:40:26,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:40:28,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:40:28,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:40:28,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 09:40:28,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-28 09:40:35,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:40:35,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774710149] [2021-10-28 09:40:35,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:40:35,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916641209] [2021-10-28 09:40:35,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916641209] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:35,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:40:35,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 09:40:35,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646899282] [2021-10-28 09:40:35,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:40:35,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:40:35,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=114, Unknown=3, NotChecked=0, Total=156 [2021-10-28 09:40:35,803 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 13 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 09:41:08,670 WARN L207 SmtUtils]: Spent 18.14 s on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-10-28 09:41:24,907 WARN L207 SmtUtils]: Spent 14.22 s on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2021-10-28 09:41:45,035 WARN L207 SmtUtils]: Spent 18.10 s on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-10-28 09:42:11,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:11,366 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-10-28 09:42:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:42:11,367 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-28 09:42:11,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:11,367 INFO L225 Difference]: With dead ends: 95 [2021-10-28 09:42:11,367 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:42:11,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 77.1s TimeCoverageRelationStatistics Valid=141, Invalid=398, Unknown=13, NotChecked=0, Total=552 [2021-10-28 09:42:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:42:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:42:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 09:42:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:42:11,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2021-10-28 09:42:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:11,368 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:42:11,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 13 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 09:42:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:42:11,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:42:11,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:11,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:11,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:11,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:11,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:11,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:42:11,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-28 09:42:11,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-28 09:42:11,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:42:11,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:11,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:11,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:12,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:12,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:12,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:12,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:12,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:13,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:42:26,612 WARN L207 SmtUtils]: Spent 9.53 s on a formula simplification. DAG size of input: 193 DAG size of output: 53 [2021-10-28 09:43:18,326 WARN L207 SmtUtils]: Spent 46.80 s on a formula simplification. DAG size of input: 168 DAG size of output: 51 [2021-10-28 09:43:26,300 WARN L207 SmtUtils]: Spent 7.59 s on a formula simplification. DAG size of input: 165 DAG size of output: 58 [2021-10-28 09:43:27,000 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:27,001 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:27,001 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse9 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse6 (not (= ULTIMATE.start_main_~b~0 0))) (.cse10 (<= 1 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~a~0 .cse9)) (.cse8 (<= ULTIMATE.start_main_~x~0 100))) (or (and (let ((.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse9))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) .cse10) (and (= ULTIMATE.start_main_~k~0 0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse0 .cse1 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse6 .cse10 .cse7 .cse8)))) [2021-10-28 09:43:27,002 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:27,002 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse10 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse6 (not (= ULTIMATE.start_main_~b~0 0))) (.cse8 (= ULTIMATE.start_main_~a~0 .cse10)) (.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse10)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (<= ULTIMATE.start_main_~x~0 100)) (.cse7 (<= 1 ULTIMATE.start_main_~x~0))) (or (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse6 .cse7 .cse8 .cse9) (and (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse9) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) .cse7)))) [2021-10-28 09:43:27,002 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:27,002 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (and (let ((.cse6 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse6)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse7 (<= ULTIMATE.start_main_~x~0 100))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_main_~b~0 0)) (= ULTIMATE.start_main_~a~0 .cse6) .cse7) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) (<= 1 ULTIMATE.start_main_~x~0)) [2021-10-28 09:43:27,002 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:27,003 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 52 53) the Hoare annotation is: (let ((.cse9 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse9)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~a~0 .cse9)) (.cse8 (<= ULTIMATE.start_main_~x~0 100))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not (= ULTIMATE.start_main_~b~0 0)) .cse6 .cse7 .cse8) (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2021-10-28 09:43:27,003 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:27,003 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:27,003 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:43:27,003 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~b~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~y~0 100)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 100))) (or (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (<= 0 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) .cse4) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~p~0 0) .cse1 .cse2 (= ULTIMATE.start_main_~r~0 1) .cse3 .cse4))) [2021-10-28 09:43:27,004 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:43:27,004 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-28 09:43:27,004 INFO L860 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-28 09:43:27,004 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:27,004 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:27,004 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:27,004 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:27,004 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:27,005 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-28 09:43:27,005 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:27,005 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 0)) (.cse9 (= ULTIMATE.start_main_~s~0 1)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_main_~k~0 0)) (.cse1 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse7 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse16 (not (= ULTIMATE.start_main_~b~0 0))) (.cse10 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse12 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse10 (let ((.cse14 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0)) (.cse15 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse15 .cse3 .cse4 .cse5 .cse16 .cse11 .cse12) (and .cse14 .cse1 .cse2 .cse15 .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse11 .cse12 .cse13)))) (and .cse0 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 .cse5 .cse7 .cse16 .cse10 .cse11 .cse12))) [2021-10-28 09:43:27,005 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-10-28 09:43:27,005 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:27,005 INFO L860 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2021-10-28 09:43:27,006 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-28 09:43:27,006 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-28 09:43:27,006 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-28 09:43:27,006 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-28 09:43:27,006 INFO L857 garLoopResultBuilder]: For program point L7-4(lines 7 9) no Hoare annotation was computed. [2021-10-28 09:43:27,006 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:43:27,007 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:27,007 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-28 09:43:27,007 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 7 68) the Hoare annotation is: (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (<= ULTIMATE.start_main_~y~0 100)) (.cse2 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (.cse5 (<= ULTIMATE.start_main_~x~0 100))) (or (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 (<= 1 ULTIMATE.start_main_~b~0) .cse2 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-28 09:43:27,007 INFO L857 garLoopResultBuilder]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-10-28 09:43:27,007 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-28 09:43:27,007 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-28 09:43:27,007 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-28 09:43:27,008 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:43:27,008 INFO L857 garLoopResultBuilder]: For program point L8-8(line 8) no Hoare annotation was computed. [2021-10-28 09:43:27,008 INFO L857 garLoopResultBuilder]: For program point L8-10(line 8) no Hoare annotation was computed. [2021-10-28 09:43:27,008 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-28 09:43:27,008 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 09:43:27,011 INFO L731 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:27,013 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:43:27,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:43:27 BoogieIcfgContainer [2021-10-28 09:43:27,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:43:27,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:43:27,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:43:27,078 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:43:27,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:44" (3/4) ... [2021-10-28 09:43:27,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:43:27,092 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-28 09:43:27,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:43:27,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:43:27,093 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:43:27,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:43:27,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:43:27,142 INFO L168 Benchmark]: Toolchain (without parser) took 343567.17 ms. Allocated memory was 90.2 MB in the beginning and 199.2 MB in the end (delta: 109.1 MB). Free memory was 57.6 MB in the beginning and 55.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 110.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:27,143 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 90.2 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:27,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.54 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 57.4 MB in the beginning and 111.7 MB in the end (delta: -54.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:27,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 136.3 MB. Free memory was 111.7 MB in the beginning and 109.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:27,144 INFO L168 Benchmark]: Boogie Preprocessor took 66.18 ms. Allocated memory is still 136.3 MB. Free memory was 109.6 MB in the beginning and 108.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:27,144 INFO L168 Benchmark]: RCFGBuilder took 518.07 ms. Allocated memory is still 136.3 MB. Free memory was 108.4 MB in the beginning and 96.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:27,145 INFO L168 Benchmark]: TraceAbstraction took 342592.65 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 95.9 MB in the beginning and 60.0 MB in the end (delta: 35.9 MB). Peak memory consumption was 125.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:27,145 INFO L168 Benchmark]: Witness Printer took 63.87 ms. Allocated memory is still 199.2 MB. Free memory was 60.0 MB in the beginning and 55.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:27,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 90.2 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.54 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 57.4 MB in the beginning and 111.7 MB in the end (delta: -54.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.98 ms. Allocated memory is still 136.3 MB. Free memory was 111.7 MB in the beginning and 109.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.18 ms. Allocated memory is still 136.3 MB. Free memory was 109.6 MB in the beginning and 108.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 518.07 ms. Allocated memory is still 136.3 MB. Free memory was 108.4 MB in the beginning and 96.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 342592.65 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 95.9 MB in the beginning and 60.0 MB in the end (delta: 35.9 MB). Peak memory consumption was 125.1 MB. Max. memory is 16.1 GB. * Witness Printer took 63.87 ms. Allocated memory is still 199.2 MB. Free memory was 60.0 MB in the beginning and 55.8 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 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 342.4s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 210.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 75.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 773 SDtfs, 1667 SDslu, 2624 SDs, 0 SdLazy, 4134 SolverSat, 464 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 60.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1031 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 166.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=13, InterpolantAutomatonStates: 279, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 589 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 55 NumberOfFragments, 957 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1427297 FormulaSimplificationTreeSizeReduction, 1.7s HoareSimplificationTime, 9 FomulaSimplificationsInter, 105276 FormulaSimplificationTreeSizeReductionInter, 73.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 38.3s InterpolantComputationTime, 926 NumberOfCodeBlocks, 836 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 902 ConstructedInterpolants, 0 QuantifiedInterpolants, 11375 SizeOfPredicates, 313 NumberOfNonLiveVariables, 3576 ConjunctsInSsa, 719 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 276/549 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((b < c && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && c == a) && !(b == 0)) && 1 <= x) && a == r * y + p * x) && x <= 100) || ((((((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && !(b == 0)) && a == r * y + p * x) && x <= 100) || ((((((((((((a == x && x * y == xy) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 100) && b == y)) && 1 <= x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && !(b == 0)) && a == r * y + p * x) && x <= 100) || ((((((((((((a == x && x * y == xy) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 100) && b == y)) && 1 <= x - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((k == 0 && x * y == xy) && p == 1) && 1 <= y) && y <= 100) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && x <= 100) && b == y) || (1 <= x && (((((((((((s * y + q * x == b && c + b * k == a) && b < a) && x * y == xy) && 1 == cond) && 1 <= y) && y <= 100) && yy == y * y) && !(b == 0)) && a == r * y + p * x) && x <= 100) || ((((((((((((c + b * k == a && x * y == xy) && p == 1) && 1 == cond) && 1 <= y) && y <= 100) && yy == y * y) && q == 0) && r == 0) && s == 1) && a == r * y + p * x) && x <= 100) && b == y)))) || (((((((((((k == 0 && b < c) && x * y == xy) && 1 <= cond) && 1 <= y) && y <= 100) && yy == y * y) && c == a) && !(b == 0)) && 1 <= x) && a == r * y + p * x) && x <= 100) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && !(b == 0)) && 1 <= x) && a == r * y + p * x) && x <= 100) || (((((((((((((x * y == xy && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && x <= 100) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((b < a && 0 <= b) && 0 <= cond) && 1 <= y) && y <= 100) && 1 <= x) && a == r * y + p * x) && x <= 100) || (((((((0 <= b && a == y) && p == 0) && 1 <= y) && y <= 100) && r == 1) && 1 <= x) && x <= 100) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && !(b == 0)) && a == r * y + p * x) && x <= 100) || ((((((((((((a == x && x * y == xy) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && y <= 100) && yy == y * y) && q == 0) && r == 0) && s == 1) && x <= 100) && b == y)) && 1 <= x) || (((((((((((k == 0 && b < c) && x * y == xy) && 1 == cond) && 1 <= y) && y <= 100) && yy == y * y) && c == a) && !(b == 0)) && 1 <= x) && a == r * y + p * x) && x <= 100) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: ((((((((b < a && x * y == xy) && 1 <= cond) && 1 <= y) && y <= 100) && yy == y * y) && 1 <= x) && a == r * y + p * x) && x <= 100) || (((((((((((x * y == xy && p == 1) && y <= 100) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && x <= 100) && b == y) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:43:27,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18460a48-f513-4ed6-bdf7-95dbd1c98071/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...