./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.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_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/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_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/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_7552a415-84dc-4e8e-affa-52eb09b912d4/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 4b6ae28789704f5fd465d11d450ce27cd9b971ac76fe8e36268d0ace5b5b057f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:12:52,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:12:52,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:12:52,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:12:52,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:12:52,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:12:52,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:12:52,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:12:52,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:12:52,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:12:52,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:12:52,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:12:52,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:12:52,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:12:52,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:12:52,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:12:52,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:12:52,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:12:52,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:12:52,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:12:52,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:12:52,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:12:52,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:12:52,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:12:52,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:12:52,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:12:52,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:12:52,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:12:52,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:12:52,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:12:52,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:12:52,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:12:52,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:12:52,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:12:52,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:12:52,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:12:52,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:12:52,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:12:52,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:12:52,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:12:52,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:12:52,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:12:52,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:12:52,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:12:52,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:12:52,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:12:52,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:12:52,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:12:52,268 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:12:52,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:12:52,269 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:12:52,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:12:52,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:12:52,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:12:52,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:12:52,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:12:52,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:12:52,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:12:52,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:12:52,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:12:52,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:12:52,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:12:52,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:12:52,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:12:52,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:12:52,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:12:52,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:12:52,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:12:52,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:12:52,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:12:52,276 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:12:52,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:12:52,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:12:52,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:12:52,280 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_7552a415-84dc-4e8e-affa-52eb09b912d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b6ae28789704f5fd465d11d450ce27cd9b971ac76fe8e36268d0ace5b5b057f [2021-10-28 09:12:52,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:12:52,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:12:52,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:12:52,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:12:52,645 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:12:52,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2021-10-28 09:12:52,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/data/b9293cb8d/6679f9e1b2e9494192522fc03ce8f495/FLAG7339b4aee [2021-10-28 09:12:53,297 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:12:53,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2021-10-28 09:12:53,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/data/b9293cb8d/6679f9e1b2e9494192522fc03ce8f495/FLAG7339b4aee [2021-10-28 09:12:53,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/data/b9293cb8d/6679f9e1b2e9494192522fc03ce8f495 [2021-10-28 09:12:53,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:12:53,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:12:53,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:12:53,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:12:53,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:12:53,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:53,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7108f95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53, skipping insertion in model container [2021-10-28 09:12:53,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:53,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:12:53,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:12:53,871 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_7552a415-84dc-4e8e-affa-52eb09b912d4/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c[520,533] [2021-10-28 09:12:53,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:12:53,903 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:12:53,918 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_7552a415-84dc-4e8e-affa-52eb09b912d4/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c[520,533] [2021-10-28 09:12:53,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:12:53,943 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:12:53,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53 WrapperNode [2021-10-28 09:12:53,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:12:53,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:12:53,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:12:53,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:12:53,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:53,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:53,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:12:53,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:12:53,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:12:53,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:12:54,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:12:54,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:12:54,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:12:54,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:12:54,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (1/1) ... [2021-10-28 09:12:54,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:12:54,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:54,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:54,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:12:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:12:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:12:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:12:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:12:54,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:12:54,419 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 09:12:54,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:54 BoogieIcfgContainer [2021-10-28 09:12:54,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:12:54,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:12:54,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:12:54,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:12:54,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:12:53" (1/3) ... [2021-10-28 09:12:54,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f738ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:12:54, skipping insertion in model container [2021-10-28 09:12:54,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:53" (2/3) ... [2021-10-28 09:12:54,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f738ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:12:54, skipping insertion in model container [2021-10-28 09:12:54,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:54" (3/3) ... [2021-10-28 09:12:54,453 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound20.c [2021-10-28 09:12:54,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:12:54,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-28 09:12:54,546 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:12:54,554 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 09:12:54,555 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 09:12:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 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 09:12:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:12:54,580 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:54,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:12:54,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:54,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-28 09:12:54,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:54,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444894385] [2021-10-28 09:12:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:54,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:54,823 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 09:12:54,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:54,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444894385] [2021-10-28 09:12:54,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444894385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:54,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:54,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:12:54,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742473684] [2021-10-28 09:12:54,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:12:54,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:54,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:12:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:12:54,855 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:54,891 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-28 09:12:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:12:54,892 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 09:12:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:54,902 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:12:54,903 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 09:12:54,908 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 09:12:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 09:12:54,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 09:12:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-28 09:12:54,976 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-28 09:12:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:54,979 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-28 09:12:54,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-28 09:12:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:12:54,982 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:54,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:12:54,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:12:54,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 09:12:54,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:54,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902526483] [2021-10-28 09:12:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:54,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:55,216 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 09:12:55,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:55,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902526483] [2021-10-28 09:12:55,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902526483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:55,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:55,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:12:55,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413123478] [2021-10-28 09:12:55,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:12:55,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:12:55,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:55,226 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:55,335 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-28 09:12:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:12:55,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 09:12:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:55,337 INFO L225 Difference]: With dead ends: 31 [2021-10-28 09:12:55,337 INFO L226 Difference]: Without dead ends: 27 [2021-10-28 09:12:55,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:12:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-28 09:12:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-10-28 09:12:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-28 09:12:55,347 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2021-10-28 09:12:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:55,348 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-28 09:12:55,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-28 09:12:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:12:55,349 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:55,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:55,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:12:55,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-28 09:12:55,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:55,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922279452] [2021-10-28 09:12:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:55,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:55,393 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:12:55,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744251799] [2021-10-28 09:12:55,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:55,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:55,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:55,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:12:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:55,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:12:55,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:55,670 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 09:12:55,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:55,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922279452] [2021-10-28 09:12:55,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:12:55,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744251799] [2021-10-28 09:12:55,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744251799] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:55,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:55,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:12:55,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764171428] [2021-10-28 09:12:55,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:12:55,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:12:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:55,684 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:55,810 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-10-28 09:12:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:12:55,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 09:12:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:55,815 INFO L225 Difference]: With dead ends: 46 [2021-10-28 09:12:55,816 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 09:12:55,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:12:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 09:12:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2021-10-28 09:12:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.25) internal successors, (40), 35 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 09:12:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-28 09:12:55,831 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-10-28 09:12:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:55,831 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-28 09:12:55,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-28 09:12:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:12:55,832 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:55,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:55,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:56,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-28 09:12:56,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:56,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-28 09:12:56,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:56,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369928464] [2021-10-28 09:12:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:56,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:56,051 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:12:56,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798751850] [2021-10-28 09:12:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:56,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:56,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:56,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:56,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:12:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:56,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:12:56,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:56,334 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 09:12:56,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:56,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369928464] [2021-10-28 09:12:56,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:12:56,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798751850] [2021-10-28 09:12:56,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798751850] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:56,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:56,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:12:56,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970982761] [2021-10-28 09:12:56,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:12:56,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:12:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:56,338 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:56,424 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-10-28 09:12:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:12:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 09:12:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:56,426 INFO L225 Difference]: With dead ends: 46 [2021-10-28 09:12:56,426 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 09:12:56,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:12:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 09:12:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-10-28 09:12:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 09:12:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-10-28 09:12:56,434 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 10 [2021-10-28 09:12:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:56,434 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-10-28 09:12:56,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-10-28 09:12:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:12:56,435 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:56,435 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:56,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:56,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:56,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2021-10-28 09:12:56,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:56,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940090841] [2021-10-28 09:12:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:56,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:56,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:12:56,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199066542] [2021-10-28 09:12:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:56,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:56,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:56,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:12:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:56,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:12:56,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:57,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:57,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940090841] [2021-10-28 09:12:57,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:12:57,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199066542] [2021-10-28 09:12:57,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199066542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:57,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:12:57,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:12:57,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906354391] [2021-10-28 09:12:57,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:12:57,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:57,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:12:57,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:12:57,085 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 09:12:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:57,214 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2021-10-28 09:12:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:12:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-10-28 09:12:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:57,217 INFO L225 Difference]: With dead ends: 55 [2021-10-28 09:12:57,218 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 09:12:57,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 09:12:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 09:12:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2021-10-28 09:12:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.2) internal successors, (48), 43 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 09:12:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-28 09:12:57,236 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 16 [2021-10-28 09:12:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:57,237 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-28 09:12:57,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 09:12:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-28 09:12:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:12:57,238 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:57,238 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:57,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:57,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:57,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-10-28 09:12:57,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:57,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974755898] [2021-10-28 09:12:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:57,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:57,524 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:12:57,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935703054] [2021-10-28 09:12:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:57,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:57,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:57,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:12:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:57,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:12:57,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:57,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:57,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974755898] [2021-10-28 09:12:57,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:12:57,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935703054] [2021-10-28 09:12:57,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935703054] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:57,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:12:57,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:12:57,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446898557] [2021-10-28 09:12:57,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:12:57,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:12:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:12:57,841 INFO L87 Difference]: Start difference. First operand 44 states and 48 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 09:12:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:57,955 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-10-28 09:12:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:12:57,957 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 09:12:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:57,958 INFO L225 Difference]: With dead ends: 53 [2021-10-28 09:12:57,958 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 09:12:57,959 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 09:12:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 09:12:57,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-28 09:12:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 09:12:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-28 09:12:57,966 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 18 [2021-10-28 09:12:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:57,967 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-28 09:12:57,967 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 09:12:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-10-28 09:12:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:12:57,968 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:57,968 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:12:58,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:58,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:12:58,184 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2093393681, now seen corresponding path program 2 times [2021-10-28 09:12:58,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:58,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086771078] [2021-10-28 09:12:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:58,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:58,199 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:12:58,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501124749] [2021-10-28 09:12:58,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:12:58,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:58,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:58,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:12:58,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:12:58,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:58,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:12:58,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:58,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:58,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086771078] [2021-10-28 09:12:58,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:12:58,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501124749] [2021-10-28 09:12:58,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501124749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:58,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:12:58,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:12:58,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263092104] [2021-10-28 09:12:58,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:12:58,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:12:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:12:58,643 INFO L87 Difference]: Start difference. First operand 40 states and 41 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 09:12:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:58,797 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-28 09:12:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:12:58,798 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 09:12:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:58,802 INFO L225 Difference]: With dead ends: 63 [2021-10-28 09:12:58,802 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 09:12:58,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:12:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 09:12:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-10-28 09:12:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-10-28 09:12:58,822 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 24 [2021-10-28 09:12:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:58,822 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-10-28 09:12:58,822 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 09:12:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-10-28 09:12:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:12:58,824 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:58,824 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-10-28 09:12:58,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:59,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:59,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:12:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:59,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2021-10-28 09:12:59,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:59,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212620079] [2021-10-28 09:12:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:59,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:59,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:12:59,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241411195] [2021-10-28 09:12:59,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:12:59,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:59,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:59,069 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:59,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:12:59,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:12:59,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:59,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:12:59,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-28 09:12:59,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:59,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212620079] [2021-10-28 09:12:59,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:12:59,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241411195] [2021-10-28 09:12:59,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241411195] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:59,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:59,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:12:59,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288378645] [2021-10-28 09:12:59,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:12:59,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:12:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:12:59,544 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 09:13:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:20,880 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-10-28 09:13:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:13:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 26 [2021-10-28 09:13:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:20,882 INFO L225 Difference]: With dead ends: 66 [2021-10-28 09:13:20,882 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 09:13:20,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:13:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 09:13:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2021-10-28 09:13:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 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 09:13:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-10-28 09:13:20,892 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 26 [2021-10-28 09:13:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:20,892 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-10-28 09:13:20,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 09:13:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-10-28 09:13:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:13:20,894 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:20,894 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:20,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:21,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:21,099 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:13:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2021-10-28 09:13:21,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:21,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475896602] [2021-10-28 09:13:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:21,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:21,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:13:21,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64119071] [2021-10-28 09:13:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:21,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:21,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:21,152 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:21,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:13:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:21,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:13:21,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:13:21,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:21,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475896602] [2021-10-28 09:13:21,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:13:21,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64119071] [2021-10-28 09:13:21,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64119071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:21,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:13:21,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:13:21,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610191578] [2021-10-28 09:13:21,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:13:21,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:13:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:13:21,457 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:21,499 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-10-28 09:13:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:13:21,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 09:13:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:21,501 INFO L225 Difference]: With dead ends: 51 [2021-10-28 09:13:21,501 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 09:13:21,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:13:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 09:13:21,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-28 09:13:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.075) internal successors, (43), 42 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-10-28 09:13:21,546 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 27 [2021-10-28 09:13:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:21,548 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-10-28 09:13:21,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-10-28 09:13:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:13:21,552 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:21,552 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-10-28 09:13:21,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:21,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 09:13:21,778 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-28 09:13:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1248592163, now seen corresponding path program 3 times [2021-10-28 09:13:21,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:21,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436482047] [2021-10-28 09:13:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:21,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:21,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:13:21,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128480494] [2021-10-28 09:13:21,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:13:21,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:21,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:21,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:21,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:13:22,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:13:22,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:13:22,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:13:22,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 09:13:22,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:22,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436482047] [2021-10-28 09:13:22,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:13:22,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128480494] [2021-10-28 09:13:22,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128480494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:22,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:13:22,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:13:22,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965617007] [2021-10-28 09:13:22,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:13:22,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:13:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:13:22,232 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:22,373 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-28 09:13:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:13:22,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-28 09:13:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:22,374 INFO L225 Difference]: With dead ends: 43 [2021-10-28 09:13:22,374 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:13:22,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:13:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:13:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:13:22,375 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 09:13:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:13:22,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-28 09:13:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:22,376 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:13:22,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:13:22,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:13:22,379 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:13:22,382 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:13:22,382 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:13:22,382 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:13:22,383 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:13:22,383 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:13:22,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:22,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:13:22,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:13:22,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:22,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:22,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:22,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:22,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:22,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:22,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:22,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:35,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:13:35,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:13:35,933 INFO L860 garLoopResultBuilder]: At program point L48(lines 21 49) the Hoare annotation is: true [2021-10-28 09:13:35,933 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:13:35,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:13:35,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:13:35,933 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:13:35,934 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:13:35,934 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:13:35,934 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-28 09:13:35,934 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:13:35,935 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse0) (* .cse0 .cse0) 1)))) [2021-10-28 09:13:35,935 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:13:35,935 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-28 09:13:35,935 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:13:35,935 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~s~0 4)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) .cse0) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1) .cse1))) [2021-10-28 09:13:35,936 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:13:35,936 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:13:35,936 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (.cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse1) (* .cse1 .cse1) 1)))) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1) .cse2) (and (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (= ULTIMATE.start_main_~t~0 3) .cse0 .cse2))) [2021-10-28 09:13:35,936 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-28 09:13:35,936 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-10-28 09:13:35,937 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:13:35,937 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:13:35,937 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:13:35,937 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:13:35,937 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:13:35,938 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:13:35,938 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-28 09:13:35,938 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2021-10-28 09:13:35,938 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= ULTIMATE.start_main_~t~0 1) (<= ~counter~0 0) .cse0 (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse1) (* .cse1 .cse1) 1)))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) .cse0))) [2021-10-28 09:13:35,939 INFO L857 garLoopResultBuilder]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2021-10-28 09:13:35,939 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 09:13:35,943 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2021-10-28 09:13:35,945 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:13:35,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:13:35 BoogieIcfgContainer [2021-10-28 09:13:35,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:13:35,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:13:35,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:13:35,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:13:35,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:54" (3/4) ... [2021-10-28 09:13:35,974 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:13:35,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 09:13:35,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:13:35,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:13:35,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:13:36,033 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:13:36,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:13:36,035 INFO L168 Benchmark]: Toolchain (without parser) took 42403.76 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 58.3 MB in the beginning and 63.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:13:36,035 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:13:36,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.79 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 68.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:13:36,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.37 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:13:36,037 INFO L168 Benchmark]: Boogie Preprocessor took 30.15 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 65.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:13:36,038 INFO L168 Benchmark]: RCFGBuilder took 400.29 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 55.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:13:36,038 INFO L168 Benchmark]: TraceAbstraction took 41544.33 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 54.8 MB in the beginning and 66.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:13:36,039 INFO L168 Benchmark]: Witness Printer took 63.83 ms. Allocated memory is still 138.4 MB. Free memory was 66.6 MB in the beginning and 63.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:13:36,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.79 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 68.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.37 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.15 ms. Allocated memory is still 92.3 MB. Free memory was 66.6 MB in the beginning and 65.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 400.29 ms. Allocated memory is still 92.3 MB. Free memory was 65.3 MB in the beginning and 55.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 41544.33 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 54.8 MB in the beginning and 66.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. * Witness Printer took 63.83 ms. Allocated memory is still 138.4 MB. Free memory was 66.6 MB in the beginning and 63.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 41.4s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 187 SDslu, 291 SDs, 0 SdLazy, 374 SolverSat, 105 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 21.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=7, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 32 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 271 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1388 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 214 FormulaSimplificationTreeSizeReductionInter, 13.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 173 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 909 SizeOfPredicates, 35 NumberOfNonLiveVariables, 689 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 60/103 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: 11]: Loop Invariant Derived loop invariant: (1 == cond && s == t + a * a) && t == 2 * a + 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 == cond && s == t + a * a) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && t == 2 * a + 1) && !(0 == cond)) && s == 4) || ((1 == cond && s == t + a * a) && t == 2 * a + 1)) || (((t == 1 && t == 2 * a + 1) && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || (((t == 1 && t == 2 * a + 1) && s == 1) && !(0 == cond))) || (((s == t + 1 && t == 3) && t == 2 * a + 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 == cond && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((t == 1 && counter <= 0) && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || ((1 == cond && s == t + a * a) && t == 2 * a + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 09:13:36,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7552a415-84dc-4e8e-affa-52eb09b912d4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...