./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt --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 40bf339a847439ba10959c396a85884137053259 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:52:33,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:52:33,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:52:33,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:52:33,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:52:33,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:52:33,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:52:33,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:52:33,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:52:33,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:52:33,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:52:33,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:52:33,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:52:33,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:52:33,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:52:33,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:52:33,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:52:33,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:52:33,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:52:33,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:52:33,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:52:33,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:52:33,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:52:33,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:52:33,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:52:33,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:52:33,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:52:33,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:52:33,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:52:33,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:52:33,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:52:33,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:52:33,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:52:33,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:52:33,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:52:33,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:52:33,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:52:33,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:52:33,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:52:33,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:52:33,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:52:33,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:52:33,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:52:33,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:52:33,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:52:33,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:52:33,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:52:33,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:52:33,473 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:52:33,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:52:33,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:52:33,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:52:33,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:52:33,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:52:33,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:52:33,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:52:33,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:52:33,475 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:52:33,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:52:33,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:52:33,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:52:33,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:52:33,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:52:33,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:52:33,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:52:33,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:52:33,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:52:33,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:52:33,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:52:33,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:52:33,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:52:33,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:52:33,478 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_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40bf339a847439ba10959c396a85884137053259 [2021-10-13 00:52:33,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:52:33,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:52:33,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:52:33,750 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:52:33,751 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:52:33,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-10-13 00:52:33,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/data/9444ecb46/ee81f9429e864382a463cdcee4ee14e1/FLAG7cf1509d7 [2021-10-13 00:52:34,289 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:52:34,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2021-10-13 00:52:34,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/data/9444ecb46/ee81f9429e864382a463cdcee4ee14e1/FLAG7cf1509d7 [2021-10-13 00:52:34,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/data/9444ecb46/ee81f9429e864382a463cdcee4ee14e1 [2021-10-13 00:52:34,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:52:34,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:52:34,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:52:34,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:52:34,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:52:34,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5701b1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34, skipping insertion in model container [2021-10-13 00:52:34,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:52:34,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:52:34,870 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2021-10-13 00:52:34,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:52:34,895 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:52:34,907 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_1006ff1d-92f0-40bc-89e5-883868834be6/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c[576,589] [2021-10-13 00:52:34,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:52:34,928 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:52:34,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34 WrapperNode [2021-10-13 00:52:34,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:52:34,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:52:34,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:52:34,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:52:34,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:52:34,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:52:34,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:52:34,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:52:34,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:34,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:52:34,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:52:34,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:52:34,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:52:35,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (1/1) ... [2021-10-13 00:52:35,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:52:35,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:35,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:52:35,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:52:35,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:52:35,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:52:35,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:52:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:52:35,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:52:35,299 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-13 00:52:35,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:52:35 BoogieIcfgContainer [2021-10-13 00:52:35,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:52:35,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:52:35,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:52:35,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:52:35,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:52:34" (1/3) ... [2021-10-13 00:52:35,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432104cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:52:35, skipping insertion in model container [2021-10-13 00:52:35,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:52:34" (2/3) ... [2021-10-13 00:52:35,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432104cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:52:35, skipping insertion in model container [2021-10-13 00:52:35,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:52:35" (3/3) ... [2021-10-13 00:52:35,335 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2021-10-13 00:52:35,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:52:35,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 00:52:35,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:52:35,409 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:52:35,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 00:52:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:52:35,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:35,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:35,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-13 00:52:35,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:35,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127103147] [2021-10-13 00:52:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:35,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:35,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:35,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127103147] [2021-10-13 00:52:35,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127103147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:35,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:35,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:52:35,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368652606] [2021-10-13 00:52:35,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:52:35,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:52:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:52:35,619 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:35,637 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-10-13 00:52:35,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:52:35,639 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:52:35,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:35,655 INFO L225 Difference]: With dead ends: 83 [2021-10-13 00:52:35,655 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 00:52:35,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:52:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 00:52:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-13 00:52:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 38 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) [2021-10-13 00:52:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-10-13 00:52:35,706 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2021-10-13 00:52:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:35,707 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-13 00:52:35,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-10-13 00:52:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:52:35,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:35,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:35,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:52:35,711 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:35,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:35,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-13 00:52:35,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:35,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012556056] [2021-10-13 00:52:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:35,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:35,742 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:35,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941112157] [2021-10-13 00:52:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:35,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:35,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:35,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:52:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:35,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:52:35,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:36,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:36,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012556056] [2021-10-13 00:52:36,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:36,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941112157] [2021-10-13 00:52:36,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941112157] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:36,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:36,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 00:52:36,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475540224] [2021-10-13 00:52:36,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:52:36,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:52:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:52:36,244 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:36,453 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-10-13 00:52:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:52:36,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:52:36,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:36,455 INFO L225 Difference]: With dead ends: 52 [2021-10-13 00:52:36,455 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 00:52:36,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 193.8ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:52:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 00:52:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-10-13 00:52:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-13 00:52:36,465 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2021-10-13 00:52:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:36,465 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-13 00:52:36,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-13 00:52:36,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:52:36,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:36,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:36,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:36,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:36,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:36,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-13 00:52:36,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:36,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223330388] [2021-10-13 00:52:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:36,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:36,718 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:36,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787745483] [2021-10-13 00:52:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:36,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:36,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:36,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:36,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:52:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:36,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:52:36,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:37,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:37,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223330388] [2021-10-13 00:52:37,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:37,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787745483] [2021-10-13 00:52:37,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787745483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:37,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:37,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 00:52:37,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184358315] [2021-10-13 00:52:37,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:52:37,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:52:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:52:37,107 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:37,382 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-13 00:52:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:52:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-10-13 00:52:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:37,387 INFO L225 Difference]: With dead ends: 69 [2021-10-13 00:52:37,387 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:52:37,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 188.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:52:37,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:52:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2021-10-13 00:52:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-10-13 00:52:37,419 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2021-10-13 00:52:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:37,420 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-10-13 00:52:37,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-10-13 00:52:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:52:37,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:37,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:37,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:37,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:37,650 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:37,651 INFO L82 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2021-10-13 00:52:37,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:37,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657874026] [2021-10-13 00:52:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:37,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:37,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:37,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963393282] [2021-10-13 00:52:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:37,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:37,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:37,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:37,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:52:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:37,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:52:37,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:37,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:37,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657874026] [2021-10-13 00:52:37,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:37,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963393282] [2021-10-13 00:52:37,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963393282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:37,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:37,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:52:37,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162863364] [2021-10-13 00:52:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:52:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:52:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:52:37,817 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-10-13 00:52:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:37,890 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-10-13 00:52:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:52:37,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2021-10-13 00:52:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:37,892 INFO L225 Difference]: With dead ends: 95 [2021-10-13 00:52:37,892 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 00:52:37,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:37,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 00:52:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2021-10-13 00:52:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-10-13 00:52:37,903 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 16 [2021-10-13 00:52:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:37,903 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-10-13 00:52:37,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-10-13 00:52:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-10-13 00:52:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:52:37,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:37,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:37,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:38,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:38,122 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:38,123 INFO L82 PathProgramCache]: Analyzing trace with hash 2015957290, now seen corresponding path program 1 times [2021-10-13 00:52:38,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:38,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402931634] [2021-10-13 00:52:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:38,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:38,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:38,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134944026] [2021-10-13 00:52:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:38,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:38,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:38,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:52:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:38,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:52:38,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:38,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:38,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402931634] [2021-10-13 00:52:38,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:38,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134944026] [2021-10-13 00:52:38,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134944026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:38,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:38,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:52:38,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791133130] [2021-10-13 00:52:38,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:52:38,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:38,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:52:38,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:52:38,392 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:38,502 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-10-13 00:52:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:52:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 00:52:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:38,503 INFO L225 Difference]: With dead ends: 72 [2021-10-13 00:52:38,503 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 00:52:38,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:52:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 00:52:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 00:52:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.203125) internal successors, (77), 69 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-10-13 00:52:38,513 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 20 [2021-10-13 00:52:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:38,513 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-10-13 00:52:38,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-10-13 00:52:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:52:38,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:38,515 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:38,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:38,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:38,734 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:38,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:38,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2021-10-13 00:52:38,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:38,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226501575] [2021-10-13 00:52:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:38,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:38,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:38,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843072023] [2021-10-13 00:52:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:38,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:38,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:38,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:38,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:52:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:38,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:52:38,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:39,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:39,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226501575] [2021-10-13 00:52:39,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:39,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843072023] [2021-10-13 00:52:39,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843072023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:52:39,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:52:39,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:52:39,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433560564] [2021-10-13 00:52:39,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:39,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:39,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:39,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:39,008 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:39,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:39,166 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2021-10-13 00:52:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:52:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 00:52:39,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:39,168 INFO L225 Difference]: With dead ends: 123 [2021-10-13 00:52:39,168 INFO L226 Difference]: Without dead ends: 117 [2021-10-13 00:52:39,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-13 00:52:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2021-10-13 00:52:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 87 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-10-13 00:52:39,181 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 25 [2021-10-13 00:52:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:39,181 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-10-13 00:52:39,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-10-13 00:52:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 00:52:39,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:39,182 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:39,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:39,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:39,410 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2021-10-13 00:52:39,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:39,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772029326] [2021-10-13 00:52:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:39,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:39,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:39,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914991358] [2021-10-13 00:52:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:39,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:39,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:39,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:39,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:52:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:39,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:52:39,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:39,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:39,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772029326] [2021-10-13 00:52:39,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:39,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914991358] [2021-10-13 00:52:39,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914991358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:52:39,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:52:39,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:52:39,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718812685] [2021-10-13 00:52:39,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:52:39,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:52:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:52:39,782 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:39,960 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-10-13 00:52:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:52:39,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 00:52:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:39,962 INFO L225 Difference]: With dead ends: 140 [2021-10-13 00:52:39,962 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 00:52:39,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:52:39,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 00:52:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2021-10-13 00:52:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-10-13 00:52:39,987 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 26 [2021-10-13 00:52:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:39,990 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-10-13 00:52:39,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-10-13 00:52:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:52:39,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:39,994 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:40,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:40,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:40,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:40,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1828677220, now seen corresponding path program 2 times [2021-10-13 00:52:40,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:40,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244689873] [2021-10-13 00:52:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:40,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:40,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:40,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956053711] [2021-10-13 00:52:40,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:52:40,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:40,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:40,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:40,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:52:40,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:52:40,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:52:40,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 00:52:40,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:40,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:40,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244689873] [2021-10-13 00:52:40,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:40,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956053711] [2021-10-13 00:52:40,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956053711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:52:40,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:52:40,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:52:40,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263458390] [2021-10-13 00:52:40,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:52:40,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:52:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:40,612 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:40,816 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2021-10-13 00:52:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:52:40,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 00:52:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:40,821 INFO L225 Difference]: With dead ends: 168 [2021-10-13 00:52:40,821 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 00:52:40,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:52:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 00:52:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 119. [2021-10-13 00:52:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.176991150442478) internal successors, (133), 118 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-10-13 00:52:40,848 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 34 [2021-10-13 00:52:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:40,849 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-10-13 00:52:40,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-10-13 00:52:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 00:52:40,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:40,857 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:40,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:41,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 00:52:41,074 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:41,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:41,074 INFO L82 PathProgramCache]: Analyzing trace with hash -797667638, now seen corresponding path program 1 times [2021-10-13 00:52:41,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:41,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255494311] [2021-10-13 00:52:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:41,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:41,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:41,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093490095] [2021-10-13 00:52:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:41,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:41,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:41,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:41,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:52:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:52:41,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:52:41,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:41,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:41,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255494311] [2021-10-13 00:52:41,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:41,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093490095] [2021-10-13 00:52:41,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093490095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:52:41,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:52:41,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:52:41,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053122262] [2021-10-13 00:52:41,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:52:41,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:52:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:52:41,564 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:41,772 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-10-13 00:52:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:52:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 00:52:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:41,775 INFO L225 Difference]: With dead ends: 208 [2021-10-13 00:52:41,775 INFO L226 Difference]: Without dead ends: 200 [2021-10-13 00:52:41,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:52:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-13 00:52:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 128. [2021-10-13 00:52:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 127 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2021-10-13 00:52:41,795 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 35 [2021-10-13 00:52:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:41,796 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2021-10-13 00:52:41,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2021-10-13 00:52:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:52:41,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:41,797 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:41,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:42,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:42,015 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:42,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1158953764, now seen corresponding path program 2 times [2021-10-13 00:52:42,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:42,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690772087] [2021-10-13 00:52:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:42,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:42,044 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:42,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232081631] [2021-10-13 00:52:42,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:52:42,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:42,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:42,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:42,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:52:42,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:52:42,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:52:42,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:52:42,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:52:42,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:42,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690772087] [2021-10-13 00:52:42,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:42,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232081631] [2021-10-13 00:52:42,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232081631] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:52:42,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:52:42,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:52:42,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959821240] [2021-10-13 00:52:42,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:52:42,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:42,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:52:42,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:52:42,342 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:42,408 INFO L93 Difference]: Finished difference Result 241 states and 268 transitions. [2021-10-13 00:52:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:52:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 00:52:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:42,410 INFO L225 Difference]: With dead ends: 241 [2021-10-13 00:52:42,410 INFO L226 Difference]: Without dead ends: 142 [2021-10-13 00:52:42,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:52:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-13 00:52:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2021-10-13 00:52:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 128 states have (on average 1.1640625) internal successors, (149), 133 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-10-13 00:52:42,425 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 39 [2021-10-13 00:52:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:42,425 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-10-13 00:52:42,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-10-13 00:52:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 00:52:42,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:42,426 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:42,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:42,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:52:42,641 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1020421613, now seen corresponding path program 3 times [2021-10-13 00:52:42,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:42,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762289029] [2021-10-13 00:52:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:42,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:42,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:42,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302271646] [2021-10-13 00:52:42,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:52:42,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:42,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:42,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:42,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:52:42,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:52:42,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:52:42,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:52:42,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:52:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 00:52:43,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:52:43,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762289029] [2021-10-13 00:52:43,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:52:43,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302271646] [2021-10-13 00:52:43,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302271646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:52:43,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:52:43,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:52:43,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627623324] [2021-10-13 00:52:43,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:52:43,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:52:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:52:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:52:43,227 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:52:58,732 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2021-10-13 00:52:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:52:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-13 00:52:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:52:58,734 INFO L225 Difference]: With dead ends: 142 [2021-10-13 00:52:58,734 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 00:52:58,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5002.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:52:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 00:52:58,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 87. [2021-10-13 00:52:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.119047619047619) internal successors, (94), 86 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2021-10-13 00:52:58,756 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 43 [2021-10-13 00:52:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:52:58,756 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2021-10-13 00:52:58,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:52:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2021-10-13 00:52:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:52:58,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:52:58,757 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:52:58,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:52:58,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 00:52:58,974 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:52:58,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:52:58,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1074581755, now seen corresponding path program 2 times [2021-10-13 00:52:58,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:52:58,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730467799] [2021-10-13 00:52:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:52:58,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:52:58,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:52:58,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752659123] [2021-10-13 00:52:58,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:52:58,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:52:58,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:52:58,983 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:52:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:52:59,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:52:59,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:52:59,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 00:52:59,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:01,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:01,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730467799] [2021-10-13 00:53:01,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:01,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752659123] [2021-10-13 00:53:01,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752659123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:01,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:01,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 00:53:01,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337930733] [2021-10-13 00:53:01,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:53:01,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:53:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:53:01,965 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:05,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:05,756 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2021-10-13 00:53:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:53:05,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 00:53:05,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:05,758 INFO L225 Difference]: With dead ends: 141 [2021-10-13 00:53:05,758 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 00:53:05,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3693.1ms TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:53:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 00:53:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2021-10-13 00:53:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 93 states have (on average 1.118279569892473) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2021-10-13 00:53:05,775 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 44 [2021-10-13 00:53:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:05,775 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2021-10-13 00:53:05,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2021-10-13 00:53:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 00:53:05,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:05,776 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:05,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:06,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:53:06,002 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:53:06,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:06,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1128629901, now seen corresponding path program 3 times [2021-10-13 00:53:06,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:06,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015173674] [2021-10-13 00:53:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:06,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:06,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:06,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534725523] [2021-10-13 00:53:06,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:53:06,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:06,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:06,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:53:06,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:53:06,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:06,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 00:53:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 00:53:07,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:07,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015173674] [2021-10-13 00:53:07,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:07,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534725523] [2021-10-13 00:53:07,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534725523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:07,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:07,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:53:07,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122678819] [2021-10-13 00:53:07,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:53:07,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:53:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:53:07,685 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:08,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:08,210 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2021-10-13 00:53:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:53:08,222 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-13 00:53:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:08,223 INFO L225 Difference]: With dead ends: 110 [2021-10-13 00:53:08,223 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 00:53:08,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 610.0ms TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:53:08,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 00:53:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-13 00:53:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-10-13 00:53:08,239 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 48 [2021-10-13 00:53:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:08,240 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-10-13 00:53:08,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-10-13 00:53:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:53:08,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:08,241 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:08,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:08,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:53:08,462 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:53:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1934789142, now seen corresponding path program 4 times [2021-10-13 00:53:08,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:08,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078443385] [2021-10-13 00:53:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:08,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:08,475 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:08,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561542379] [2021-10-13 00:53:08,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:53:08,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:08,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:08,478 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:08,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:53:08,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:53:08,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:08,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:53:08,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:11,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:11,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078443385] [2021-10-13 00:53:11,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:11,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561542379] [2021-10-13 00:53:11,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561542379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:11,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:11,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:53:11,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920404109] [2021-10-13 00:53:11,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:53:11,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:53:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:53:11,084 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:12,559 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2021-10-13 00:53:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:53:12,559 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 00:53:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:12,560 INFO L225 Difference]: With dead ends: 145 [2021-10-13 00:53:12,561 INFO L226 Difference]: Without dead ends: 137 [2021-10-13 00:53:12,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 865.3ms TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:53:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-13 00:53:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2021-10-13 00:53:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.09375) internal successors, (105), 98 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2021-10-13 00:53:12,584 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 53 [2021-10-13 00:53:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:12,584 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2021-10-13 00:53:12,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2021-10-13 00:53:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 00:53:12,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:12,586 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:12,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:12,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:12,807 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:53:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:12,808 INFO L82 PathProgramCache]: Analyzing trace with hash -413997928, now seen corresponding path program 5 times [2021-10-13 00:53:12,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:12,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010625674] [2021-10-13 00:53:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:12,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:12,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:12,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748515379] [2021-10-13 00:53:12,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:53:12,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:12,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:12,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:53:13,291 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 00:53:13,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:53:13,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:13,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:13,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010625674] [2021-10-13 00:53:13,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:13,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748515379] [2021-10-13 00:53:13,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748515379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:13,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:13,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:53:13,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586338490] [2021-10-13 00:53:13,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:53:13,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:53:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:53:13,505 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:13,696 INFO L93 Difference]: Finished difference Result 198 states and 208 transitions. [2021-10-13 00:53:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:53:13,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 00:53:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:13,697 INFO L225 Difference]: With dead ends: 198 [2021-10-13 00:53:13,698 INFO L226 Difference]: Without dead ends: 143 [2021-10-13 00:53:13,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:53:13,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-13 00:53:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2021-10-13 00:53:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.1048387096774193) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-10-13 00:53:13,729 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 57 [2021-10-13 00:53:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:13,730 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-10-13 00:53:13,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-10-13 00:53:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 00:53:13,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:13,731 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:13,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:13,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:53:13,942 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:53:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1860833829, now seen corresponding path program 6 times [2021-10-13 00:53:13,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:13,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877644642] [2021-10-13 00:53:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:13,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:13,952 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:13,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186264211] [2021-10-13 00:53:13,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:53:13,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:13,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:13,954 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:13,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:53:14,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 00:53:14,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:14,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:53:14,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-10-13 00:53:14,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:14,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877644642] [2021-10-13 00:53:14,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:14,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186264211] [2021-10-13 00:53:14,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186264211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:14,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:14,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:53:14,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597896612] [2021-10-13 00:53:14,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:53:14,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:53:14,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:53:14,791 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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) [2021-10-13 00:53:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:15,049 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2021-10-13 00:53:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:53:15,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 00:53:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:15,051 INFO L225 Difference]: With dead ends: 146 [2021-10-13 00:53:15,051 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 00:53:15,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 146.6ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:53:15,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 00:53:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 81. [2021-10-13 00:53:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2021-10-13 00:53:15,071 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 62 [2021-10-13 00:53:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:15,072 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2021-10-13 00:53:15,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 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) [2021-10-13 00:53:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2021-10-13 00:53:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:53:15,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:15,073 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:15,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:15,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:53:15,299 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:53:15,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:15,300 INFO L82 PathProgramCache]: Analyzing trace with hash 300678153, now seen corresponding path program 7 times [2021-10-13 00:53:15,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:15,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18700797] [2021-10-13 00:53:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:15,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:15,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:15,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716090250] [2021-10-13 00:53:15,320 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:53:15,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:15,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:15,321 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:15,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:53:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:53:15,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 00:53:15,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:16,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:16,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18700797] [2021-10-13 00:53:16,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:16,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716090250] [2021-10-13 00:53:16,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716090250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:16,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:16,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:53:16,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504315505] [2021-10-13 00:53:16,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:53:16,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:53:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:53:16,582 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:17,021 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2021-10-13 00:53:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:53:17,021 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-10-13 00:53:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:17,023 INFO L225 Difference]: With dead ends: 135 [2021-10-13 00:53:17,023 INFO L226 Difference]: Without dead ends: 128 [2021-10-13 00:53:17,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 221.9ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:53:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-13 00:53:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2021-10-13 00:53:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2021-10-13 00:53:17,055 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 66 [2021-10-13 00:53:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:17,056 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2021-10-13 00:53:17,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2021-10-13 00:53:17,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 00:53:17,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:17,059 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:17,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:17,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:53:17,266 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:53:17,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:17,266 INFO L82 PathProgramCache]: Analyzing trace with hash 397597340, now seen corresponding path program 8 times [2021-10-13 00:53:17,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:17,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571384714] [2021-10-13 00:53:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:17,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:17,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:17,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785042366] [2021-10-13 00:53:17,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:53:17,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:17,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:17,290 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:17,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:53:17,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:53:17,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:17,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:53:17,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 55 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:53:18,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:18,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571384714] [2021-10-13 00:53:18,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:18,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785042366] [2021-10-13 00:53:18,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785042366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:18,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:18,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:53:18,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801319052] [2021-10-13 00:53:18,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:53:18,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:53:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:53:18,205 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:18,828 INFO L93 Difference]: Finished difference Result 196 states and 202 transitions. [2021-10-13 00:53:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:53:18,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-10-13 00:53:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:18,830 INFO L225 Difference]: With dead ends: 196 [2021-10-13 00:53:18,830 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 00:53:18,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 149.6ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:53:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 00:53:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 121. [2021-10-13 00:53:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.05) internal successors, (126), 120 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-10-13 00:53:18,862 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 75 [2021-10-13 00:53:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:18,862 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-10-13 00:53:18,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:53:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-10-13 00:53:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 00:53:18,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:53:18,863 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:53:18,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-13 00:53:19,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:53:19,090 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:53:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:53:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash 822588344, now seen corresponding path program 9 times [2021-10-13 00:53:19,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:53:19,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213935892] [2021-10-13 00:53:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:53:19,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:53:19,100 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:53:19,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62038406] [2021-10-13 00:53:19,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:53:19,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:19,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:53:19,102 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:53:19,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:53:19,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:53:19,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:53:19,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:53:19,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:53:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-10-13 00:53:19,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:53:19,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213935892] [2021-10-13 00:53:19,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:53:19,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62038406] [2021-10-13 00:53:19,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62038406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:53:19,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:53:19,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:53:19,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650907447] [2021-10-13 00:53:19,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:53:19,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:53:19,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:53:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:53:19,922 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 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) [2021-10-13 00:53:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:53:20,081 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-10-13 00:53:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:53:20,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 00:53:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:53:20,082 INFO L225 Difference]: With dead ends: 121 [2021-10-13 00:53:20,082 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:53:20,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:53:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:53:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:53:20,085 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) [2021-10-13 00:53:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:53:20,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2021-10-13 00:53:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:53:20,085 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:53:20,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 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) [2021-10-13 00:53:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:53:20,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:53:20,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:53:20,090 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:53:20,091 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:53:20,091 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:53:20,091 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:53:20,091 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:53:20,091 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:53:20,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:53:20,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:53:20,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:53:20,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:20,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:20,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:20,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:21,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:21,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:21,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:21,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:21,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:21,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:53:28,810 WARN L207 SmtUtils]: Spent 7.03 s on a formula simplification. DAG size of input: 209 DAG size of output: 39 [2021-10-13 00:53:40,996 WARN L207 SmtUtils]: Spent 7.70 s on a formula simplification. DAG size of input: 188 DAG size of output: 39 [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-13 00:53:54,092 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-10-13 00:53:54,093 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:53:54,093 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse8 (= ULTIMATE.start_main_~a~0 1)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (<= ULTIMATE.start_main_~y~0 100)) (.cse10 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse0 (or (and .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (* 4 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 4) .cse6 .cse7) (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~b~0 .cse10) (= ULTIMATE.start_main_~a~0 2)))) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse11 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))))) (.cse2 (<= 0 ULTIMATE.start_main_~x~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 (<= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse1 .cse2 .cse3) (and (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~q~0 1) .cse9) (and .cse0 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse10)))) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse4 .cse5 .cse6 .cse7 .cse1 .cse11 .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse4 .cse6 .cse7 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) .cse1 .cse11 .cse2 .cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))))) [2021-10-13 00:53:54,093 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-10-13 00:53:54,093 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:53:54,094 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_main_~a~0 1)) (.cse6 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse7 (<= 0 ULTIMATE.start_main_~x~0)) (.cse8 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (let ((.cse10 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (or (and .cse0 .cse10 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0)))) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse10 (= ULTIMATE.start_main_~q~0 1))) .cse4 .cse6 .cse8 .cse9) (let ((.cse11 (div ULTIMATE.start_main_~q~0 2))) (and .cse0 (= (mod (div (- .cse11) (- 2)) (- 2)) 0) (= ULTIMATE.start_main_~y~0 (* (div (* (div (* .cse11 (- 1)) (- 2)) (- 1)) (- 2)) ULTIMATE.start_main_~y~0)) .cse10 .cse4 (= (mod ULTIMATE.start_main_~q~0 2) 0) .cse6 (= (mod .cse11 (- 2)) 0) .cse8 .cse9 (= (+ ULTIMATE.start_main_~r~0 (* 8 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~x~0)))))) (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~r~0) .cse2 .cse3 .cse5 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse7 .cse8 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:53:54,094 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-10-13 00:53:54,094 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:53:54,094 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:53:54,094 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse6 (<= 0 ULTIMATE.start_main_~x~0)) (.cse7 (<= ULTIMATE.start_main_~x~0 100)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse4 (= ULTIMATE.start_main_~a~0 1)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (<= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0)) .cse1 .cse2 .cse3 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse5 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse6 .cse7 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (or (and .cse0 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) .cse2 .cse3) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 1) .cse8)) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-13 00:53:54,094 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:53:54,094 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100)) (.cse11 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (.cse16 (* ULTIMATE.start_main_~b~0 (- 1))) (.cse14 (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1)))) (.cse15 (+ ULTIMATE.start_main_~y~0 1))) (let ((.cse9 (< (div .cse14 (- 2)) .cse15)) (.cse10 (<= (div .cse16 (- 2)) ULTIMATE.start_main_~y~0)) (.cse12 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse11))) (.cse8 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (<= ULTIMATE.start_main_~x~0 100)) (.cse7 (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse2 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~y~0))) .cse3 .cse4)))) (or (and (or (let ((.cse1 (div ULTIMATE.start_main_~q~0 2)) (.cse6 (* 8 ULTIMATE.start_main_~y~0))) (and .cse0 (= (mod (div (- .cse1) (- 2)) (- 2)) 0) (= ULTIMATE.start_main_~y~0 (* (div (* (div (* .cse1 (- 1)) (- 2)) (- 1)) (- 2)) ULTIMATE.start_main_~y~0)) .cse2 .cse3 .cse4 (= (mod ULTIMATE.start_main_~q~0 2) 0) (= (mod .cse1 (- 2)) 0) .cse5 (<= .cse6 ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~r~0 .cse6) ULTIMATE.start_main_~x~0))) (and .cse7 .cse8 .cse5)) .cse9 .cse10) (and .cse0 (= (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0 .cse11) (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) .cse12 .cse3 .cse4 .cse13 .cse8 .cse5) (and .cse0 .cse9 .cse12 .cse3 .cse4 .cse13 .cse10 .cse8 .cse5) (and .cse0 (= (+ ULTIMATE.start_main_~r~0 (* 4 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~x~0) (< (div (div .cse14 2) (- 2)) .cse15) .cse12 .cse3 .cse4 .cse13 (<= (div (div .cse16 2) (- 2)) ULTIMATE.start_main_~y~0) .cse8 .cse5) (and .cse7 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2021-10-13 00:53:54,094 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:53:54,095 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 0 ULTIMATE.start_main_~x~0)) (.cse6 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~a~0 1) .cse4 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~r~0) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse5 .cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:53:54,095 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:53:54,095 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~y~0 100)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 0 ULTIMATE.start_main_~x~0)) (.cse6 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~a~0 1) .cse4 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~r~0) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse5 .cse6 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:53:54,095 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:53:54,095 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~y~0 100)) (.cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~r~0) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) .cse4 .cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)))) [2021-10-13 00:53:54,095 INFO L860 garLoopResultBuilder]: At program point L65(lines 22 66) the Hoare annotation is: true [2021-10-13 00:53:54,095 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~r~0)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 100)) [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:53:54,096 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:53:54,097 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:53:54,097 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:53:54,101 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:53:54,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:53:54 BoogieIcfgContainer [2021-10-13 00:53:54,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:53:54,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:53:54,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:53:54,152 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:53:54,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:52:35" (3/4) ... [2021-10-13 00:53:54,156 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:53:54,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-13 00:53:54,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:53:54,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:53:54,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:53:54,242 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:53:54,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:53:54,243 INFO L168 Benchmark]: Toolchain (without parser) took 79548.50 ms. Allocated memory was 109.1 MB in the beginning and 163.6 MB in the end (delta: 54.5 MB). Free memory was 78.9 MB in the beginning and 73.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:54,244 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:53:54,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.77 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 78.6 MB in the beginning and 109.3 MB in the end (delta: -30.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:54,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 136.3 MB. Free memory was 109.3 MB in the beginning and 107.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:53:54,246 INFO L168 Benchmark]: Boogie Preprocessor took 25.47 ms. Allocated memory is still 136.3 MB. Free memory was 107.5 MB in the beginning and 106.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:54,246 INFO L168 Benchmark]: RCFGBuilder took 305.67 ms. Allocated memory is still 136.3 MB. Free memory was 106.3 MB in the beginning and 95.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:54,246 INFO L168 Benchmark]: TraceAbstraction took 78824.63 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 94.6 MB in the beginning and 78.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:54,247 INFO L168 Benchmark]: Witness Printer took 90.54 ms. Allocated memory is still 163.6 MB. Free memory was 78.0 MB in the beginning and 73.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:53:54,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 109.1 MB. Free memory was 64.7 MB in the beginning and 64.6 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.77 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 78.6 MB in the beginning and 109.3 MB in the end (delta: -30.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 136.3 MB. Free memory was 109.3 MB in the beginning and 107.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.47 ms. Allocated memory is still 136.3 MB. Free memory was 107.5 MB in the beginning and 106.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 305.67 ms. Allocated memory is still 136.3 MB. Free memory was 106.3 MB in the beginning and 95.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 78824.63 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 94.6 MB in the beginning and 78.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.1 GB. * Witness Printer took 90.54 ms. Allocated memory is still 163.6 MB. Free memory was 78.0 MB in the beginning and 73.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 78701.4ms, OverallIterations: 19, TraceHistogramMax: 6, EmptinessCheckTime: 35.2ms, AutomataDifference: 24591.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 33777.3ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 563 SDtfs, 1153 SDslu, 1305 SDs, 0 SdLazy, 2780 SolverSat, 394 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 14394.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 815 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 11445.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=10, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 367.2ms AutomataMinimizationTime, 19 MinimizatonAttempts, 446 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 104 NumberOfFragments, 1266 HoareAnnotationTreeSize, 10 FomulaSimplifications, 1506695 FormulaSimplificationTreeSizeReduction, 1460.6ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 535351 FormulaSimplificationTreeSizeReductionInter, 32306.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 138.9ms SsaConstructionTime, 470.6ms SatisfiabilityAnalysisTime, 10920.6ms InterpolantComputationTime, 753 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 6798 SizeOfPredicates, 140 NumberOfNonLiveVariables, 2320 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 390/694 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 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) || ((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && a == 1) && b == y)) && x == r + q * y) && 0 <= x) && x <= 100 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (((((((((cond == 1 && 1 <= cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((((((cond == 1 && -(q / 2) / -2 % -2 == 0) && y == q / 2 * -1 / -2 * -1 / -2 * y) && 1 <= cond) && 1 <= y) && y <= 100) && q % 2 == 0) && q / 2 % -2 == 0) && x <= 100) && 8 * y <= x) && r + 8 * y == x) || ((((((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y) || (((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && 1 <= y) && y <= 100)) && 0 <= x) && x <= 100)) && (-1 + r * -1) / -2 < y + 1) && b * -1 / -2 <= y) || (((((((cond == 1 && b + r + q * y == x + a * y) && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && 0 <= x) && x <= 100)) || ((((((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && b * -1 / -2 <= y) && 0 <= x) && x <= 100)) || (((((((((cond == 1 && r + 4 * y == x) && (-1 + r * -1) / 2 / -2 < y + 1) && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && b * -1 / 2 / -2 <= y) && 0 <= x) && x <= 100)) || ((((((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y) || (((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && 1 <= y) && y <= 100)) && r < y) && b <= y) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && a == 1) && x == r + q * y) && y <= r) && 0 <= x) && x <= 100) && b == y) || (r < 2 * b && (((((((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) || (((x == r + y && cond == 1) && 1 <= cond) && q == 1)) && a == 1) && y <= r) && x <= 100) && b == y) || ((((((((((cond == 1 && -(q / 2) / -2 % -2 == 0) && y == q / 2 * -1 / -2 * -1 / -2 * y) && 1 <= cond) && a == 1) && q % 2 == 0) && y <= r) && q / 2 % -2 == 0) && x <= 100) && b == y) && r + 8 * y == x)))) || (((((((((cond == 1 && 1 == cond) && 0 <= r) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && y <= 100) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && b == y)) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && b == 2 * y) && a == 2)) && y <= b + r) && 1 == cond) && r < b) && x == r + q * y) && 0 <= x) && x <= 100) || ((((((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y) || (((((((((cond == 1 && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && y <= 100) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && b == y)) || (((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && b == 2 * y) && a == 2)) && q == 2) && x == r + 2 * y)) && r < y) && b <= y)) || ((((((((cond == 1 && 1 <= cond) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0)) || ((((((((cond == 1 && 1 <= y) && y <= 100) && a == q) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && r == x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && y <= b + r) && 1 == cond) && 1 <= y) && y <= 100) && r < b) && a == 1) && x == r + q * y) && 0 <= x) && x <= 100) && b == y) || ((((((((cond == 1 && 1 == cond) && 1 <= y) && y <= 100) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && 0 <= x) && x <= 100) && a % -2 == 0)) || ((r < y && (((((cond == 1 && q == 2) && x == r + 2 * y) && 1 <= y) && y <= 100) || (((((((x == r + y && cond == 1) && 1 <= cond) && 1 <= y) && y <= 100) && a == 1) && q == 1) && b == y))) && b <= y) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 00:53:54,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1006ff1d-92f0-40bc-89e5-883868834be6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...