./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX --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 b61db512cc77bff784b3cdbd5d852c5dc364bdc7776dcbb3369c7c75ae1fb315 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:46:07,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:46:07,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:46:07,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:46:07,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:46:07,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:46:07,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:46:07,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:46:07,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:46:07,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:46:07,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:46:07,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:46:07,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:46:07,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:46:07,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:46:07,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:46:07,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:46:07,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:46:07,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:46:07,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:46:07,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:46:07,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:46:07,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:46:07,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:46:07,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:46:07,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:46:07,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:46:07,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:46:07,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:46:07,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:46:07,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:46:07,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:46:07,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:46:07,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:46:07,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:46:07,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:46:07,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:46:07,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:46:07,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:46:07,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:46:07,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:46:07,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:46:07,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:46:07,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:46:07,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:46:07,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:46:07,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:46:07,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:46:07,143 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:46:07,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:46:07,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:46:07,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:46:07,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:46:07,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:46:07,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:46:07,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:46:07,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:46:07,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:46:07,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:46:07,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:46:07,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:46:07,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:46:07,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:46:07,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:46:07,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:46:07,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:46:07,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:46:07,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:46:07,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:46:07,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:46:07,147 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:46:07,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:46:07,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:46:07,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:46:07,148 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_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b61db512cc77bff784b3cdbd5d852c5dc364bdc7776dcbb3369c7c75ae1fb315 [2021-11-09 10:46:07,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:46:07,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:46:07,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:46:07,438 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:46:07,439 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:46:07,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c [2021-11-09 10:46:07,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/data/f18c32da5/1e1932e71b5c4cc49ecf5029c2e6fce7/FLAG1c26d154a [2021-11-09 10:46:07,968 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:46:07,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c [2021-11-09 10:46:07,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/data/f18c32da5/1e1932e71b5c4cc49ecf5029c2e6fce7/FLAG1c26d154a [2021-11-09 10:46:08,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/data/f18c32da5/1e1932e71b5c4cc49ecf5029c2e6fce7 [2021-11-09 10:46:08,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:46:08,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:46:08,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:46:08,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:46:08,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:46:08,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556de886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08, skipping insertion in model container [2021-11-09 10:46:08,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:46:08,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:46:08,576 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_cfd9aac4-bd38-4388-a782-9d36e9be0bad/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c[546,559] [2021-11-09 10:46:08,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:46:08,598 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:46:08,609 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_cfd9aac4-bd38-4388-a782-9d36e9be0bad/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c[546,559] [2021-11-09 10:46:08,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:46:08,627 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:46:08,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08 WrapperNode [2021-11-09 10:46:08,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:46:08,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:46:08,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:46:08,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:46:08,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:46:08,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:46:08,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:46:08,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:46:08,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:46:08,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:46:08,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:46:08,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:46:08,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (1/1) ... [2021-11-09 10:46:08,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:46:08,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:08,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:46:08,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:46:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:46:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:46:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:46:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:46:09,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:46:09,079 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-09 10:46:09,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:46:09 BoogieIcfgContainer [2021-11-09 10:46:09,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:46:09,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:46:09,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:46:09,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:46:09,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:46:08" (1/3) ... [2021-11-09 10:46:09,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dee7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:46:09, skipping insertion in model container [2021-11-09 10:46:09,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:46:08" (2/3) ... [2021-11-09 10:46:09,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dee7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:46:09, skipping insertion in model container [2021-11-09 10:46:09,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:46:09" (3/3) ... [2021-11-09 10:46:09,090 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound100.c [2021-11-09 10:46:09,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:46:09,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 10:46:09,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:46:09,151 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:46:09,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 10:46:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 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) [2021-11-09 10:46:09,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:46:09,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:09,180 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:09,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-11-09 10:46:09,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:09,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63979675] [2021-11-09 10:46:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:09,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:09,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:09,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63979675] [2021-11-09 10:46:09,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63979675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:09,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:09,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:46:09,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109271100] [2021-11-09 10:46:09,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:46:09,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:09,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:46:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:46:09,404 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:09,420 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2021-11-09 10:46:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:46:09,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 10:46:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:09,430 INFO L225 Difference]: With dead ends: 37 [2021-11-09 10:46:09,430 INFO L226 Difference]: Without dead ends: 16 [2021-11-09 10:46:09,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:46:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-09 10:46:09,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-09 10:46:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-09 10:46:09,467 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2021-11-09 10:46:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:09,469 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-09 10:46:09,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-09 10:46:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:46:09,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:09,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:09,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:46:09,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-11-09 10:46:09,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:09,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375615134] [2021-11-09 10:46:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:09,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:09,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:46:09,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134581322] [2021-11-09 10:46:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:09,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:09,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:09,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:46:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:09,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:46:09,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:09,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:09,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375615134] [2021-11-09 10:46:09,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:46:09,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134581322] [2021-11-09 10:46:09,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134581322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:09,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:09,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:46:09,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486064858] [2021-11-09 10:46:09,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:46:09,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:09,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:46:09,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:46:09,868 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:09,914 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-11-09 10:46:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:09,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 10:46:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:09,916 INFO L225 Difference]: With dead ends: 30 [2021-11-09 10:46:09,916 INFO L226 Difference]: Without dead ends: 23 [2021-11-09 10:46:09,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-09 10:46:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-11-09 10:46:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-09 10:46:09,922 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-11-09 10:46:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:09,923 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-09 10:46:09,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-09 10:46:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 10:46:09,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:09,925 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:09,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:10,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:10,150 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1782419994, now seen corresponding path program 1 times [2021-11-09 10:46:10,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:10,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794445577] [2021-11-09 10:46:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:10,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:10,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:46:10,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504095827] [2021-11-09 10:46:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:10,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:10,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:10,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:46:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:10,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:46:10,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:10,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:10,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794445577] [2021-11-09 10:46:10,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:46:10,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504095827] [2021-11-09 10:46:10,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504095827] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:10,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:46:10,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:46:10,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197509463] [2021-11-09 10:46:10,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:10,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:10,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:10,458 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:10,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:10,513 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-11-09 10:46:10,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:46:10,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-09 10:46:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:10,515 INFO L225 Difference]: With dead ends: 33 [2021-11-09 10:46:10,515 INFO L226 Difference]: Without dead ends: 27 [2021-11-09 10:46:10,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:46:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-09 10:46:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-11-09 10:46:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-09 10:46:10,521 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-11-09 10:46:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:10,521 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-09 10:46:10,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-09 10:46:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 10:46:10,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:10,522 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:10,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:10,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:10,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:10,742 INFO L85 PathProgramCache]: Analyzing trace with hash 397544518, now seen corresponding path program 2 times [2021-11-09 10:46:10,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:10,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694412582] [2021-11-09 10:46:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:10,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:10,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:46:10,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762652135] [2021-11-09 10:46:10,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:46:10,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:10,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:10,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:10,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:46:10,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:46:10,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:10,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-09 10:46:10,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:11,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:11,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694412582] [2021-11-09 10:46:11,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:46:11,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762652135] [2021-11-09 10:46:11,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762652135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:11,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:46:11,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 10:46:11,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009984364] [2021-11-09 10:46:11,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:46:11,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:46:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:46:11,197 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:11,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:11,504 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-11-09 10:46:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:46:11,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-09 10:46:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:11,516 INFO L225 Difference]: With dead ends: 37 [2021-11-09 10:46:11,516 INFO L226 Difference]: Without dead ends: 31 [2021-11-09 10:46:11,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:46:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-09 10:46:11,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-11-09 10:46:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:11,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-09 10:46:11,522 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 18 [2021-11-09 10:46:11,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:11,523 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-09 10:46:11,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:11,523 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-09 10:46:11,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 10:46:11,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:11,524 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:11,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:11,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:11,725 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1530556302, now seen corresponding path program 3 times [2021-11-09 10:46:11,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:11,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968781311] [2021-11-09 10:46:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:11,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:11,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:46:11,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990142029] [2021-11-09 10:46:11,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:46:11,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:11,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:11,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:11,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:46:11,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:46:11,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:46:11,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:46:11,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 10:46:12,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:12,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968781311] [2021-11-09 10:46:12,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:46:12,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990142029] [2021-11-09 10:46:12,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990142029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:12,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:46:12,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:46:12,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273954476] [2021-11-09 10:46:12,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:46:12,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:46:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:12,232 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:12,561 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-11-09 10:46:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:12,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-09 10:46:12,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:12,562 INFO L225 Difference]: With dead ends: 28 [2021-11-09 10:46:12,563 INFO L226 Difference]: Without dead ends: 26 [2021-11-09 10:46:12,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:46:12,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-09 10:46:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-09 10:46:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-09 10:46:12,569 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2021-11-09 10:46:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:12,570 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-09 10:46:12,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-09 10:46:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 10:46:12,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:12,571 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:12,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:12,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:12,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash -202648735, now seen corresponding path program 1 times [2021-11-09 10:46:12,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:12,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709979206] [2021-11-09 10:46:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:12,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:12,799 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:46:12,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887580759] [2021-11-09 10:46:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:12,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:12,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:12,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:12,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:46:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:12,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:46:12,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:46:12,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:12,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709979206] [2021-11-09 10:46:12,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:46:12,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887580759] [2021-11-09 10:46:12,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887580759] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:46:12,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:46:12,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:46:12,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092111991] [2021-11-09 10:46:12,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:46:12,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:12,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:46:12,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:46:12,990 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:13,039 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-11-09 10:46:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:46:13,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-09 10:46:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:13,043 INFO L225 Difference]: With dead ends: 32 [2021-11-09 10:46:13,043 INFO L226 Difference]: Without dead ends: 28 [2021-11-09 10:46:13,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:46:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-09 10:46:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-09 10:46:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-09 10:46:13,060 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2021-11-09 10:46:13,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:13,060 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-09 10:46:13,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-09 10:46:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 10:46:13,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:46:13,065 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:46:13,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:13,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:13,282 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:46:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:46:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1425077830, now seen corresponding path program 1 times [2021-11-09 10:46:13,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:46:13,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269132661] [2021-11-09 10:46:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:46:13,294 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:46:13,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666193144] [2021-11-09 10:46:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:46:13,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:46:13,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:46:13,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:46:13,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:46:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:46:13,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:46:13,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:46:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-09 10:46:13,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:46:13,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269132661] [2021-11-09 10:46:13,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:46:13,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666193144] [2021-11-09 10:46:13,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666193144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:46:13,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:46:13,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:46:13,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017412695] [2021-11-09 10:46:13,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:46:13,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:46:13,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:46:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:46:13,529 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:46:13,613 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-11-09 10:46:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:46:13,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-09 10:46:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:46:13,615 INFO L225 Difference]: With dead ends: 28 [2021-11-09 10:46:13,615 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 10:46:13,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:46:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 10:46:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 10:46:13,616 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) [2021-11-09 10:46:13,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 10:46:13,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-11-09 10:46:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:46:13,616 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:46:13,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:46:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 10:46:13,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 10:46:13,619 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:46:13,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:46:13,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:46:13,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 10:46:13,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 10:46:13,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:46:13,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:46:13,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:46:13,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:46:13,976 INFO L853 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 1))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or .cse0 (and (not (= ULTIMATE.start_main_~z~0 0)) (= (mod (+ (- 1) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~z~0) 0))) (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (and (<= ~counter~0 0) .cse0 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)))) [2021-11-09 10:46:13,976 INFO L857 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 38 39) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= ULTIMATE.start_main_~x~0 1) (and (not (= ULTIMATE.start_main_~z~0 0)) (= (mod (+ (- 1) ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~z~0) 0))) (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-11-09 10:46:13,977 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-11-09 10:46:13,978 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-11-09 10:46:13,978 INFO L860 garLoopResultBuilder]: At program point L16-5(lines 15 21) the Hoare annotation is: true [2021-11-09 10:46:13,978 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 10:46:13,978 INFO L860 garLoopResultBuilder]: At program point L50(lines 23 51) the Hoare annotation is: true [2021-11-09 10:46:13,978 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-11-09 10:46:13,978 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-11-09 10:46:13,978 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-11-09 10:46:13,978 INFO L857 garLoopResultBuilder]: For program point L13-2(line 13) no Hoare annotation was computed. [2021-11-09 10:46:13,978 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2021-11-09 10:46:13,982 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2021-11-09 10:46:13,983 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:46:14,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:46:14 BoogieIcfgContainer [2021-11-09 10:46:14,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:46:14,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:46:14,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:46:14,009 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:46:14,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:46:09" (3/4) ... [2021-11-09 10:46:14,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 10:46:14,023 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-09 10:46:14,023 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 10:46:14,023 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:46:14,023 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:46:14,074 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:46:14,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:46:14,078 INFO L168 Benchmark]: Toolchain (without parser) took 5700.03 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 61.7 MB in the beginning and 104.1 MB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:46:14,079 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 48.8 MB in the beginning and 48.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:46:14,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.46 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 61.5 MB in the beginning and 105.9 MB in the end (delta: -44.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:14,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.15 ms. Allocated memory is still 130.0 MB. Free memory was 105.9 MB in the beginning and 104.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:14,082 INFO L168 Benchmark]: Boogie Preprocessor took 48.76 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 103.5 MB in the end (delta: 919.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:46:14,083 INFO L168 Benchmark]: RCFGBuilder took 342.05 ms. Allocated memory is still 130.0 MB. Free memory was 103.5 MB in the beginning and 93.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:14,084 INFO L168 Benchmark]: TraceAbstraction took 4925.47 ms. Allocated memory is still 130.0 MB. Free memory was 93.0 MB in the beginning and 106.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:14,084 INFO L168 Benchmark]: Witness Printer took 65.31 ms. Allocated memory is still 130.0 MB. Free memory was 106.2 MB in the beginning and 104.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:46:14,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 94.4 MB. Free memory was 48.8 MB in the beginning and 48.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.46 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 61.5 MB in the beginning and 105.9 MB in the end (delta: -44.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.15 ms. Allocated memory is still 130.0 MB. Free memory was 105.9 MB in the beginning and 104.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.76 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 103.5 MB in the end (delta: 919.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.05 ms. Allocated memory is still 130.0 MB. Free memory was 103.5 MB in the beginning and 93.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4925.47 ms. Allocated memory is still 130.0 MB. Free memory was 93.0 MB in the beginning and 106.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. * Witness Printer took 65.31 ms. Allocated memory is still 130.0 MB. Free memory was 106.2 MB in the beginning and 104.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: 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, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 65 SDslu, 181 SDs, 0 SdLazy, 134 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 15 NumberOfFragments, 71 HoareAnnotationTreeSize, 4 FomulaSimplifications, 278 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 470 SizeOfPredicates, 31 NumberOfNonLiveVariables, 594 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 44/76 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 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (1 == cond && (x == 1 || (!(z == 0) && (-1 + x) % z == 0))) && y + x == z * x + 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((1 == cond && (x == 1 || (!(z == 0) && (-1 + x) % z == 0))) && y + x == z * x + 1) || ((counter <= 0 && x == 1) && z == y) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-09 10:46:14,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd9aac4-bd38-4388-a782-9d36e9be0bad/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE