./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_2-2.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_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/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_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/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_33f4c127-5706-4b4f-8674-70d45fc695aa/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 5b285e679a61ee5ec3c0d899a4a7682d4249c0885f5b4a5875891b312f202de4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:58:40,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:58:40,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:58:40,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:58:40,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:58:40,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:58:40,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:58:40,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:58:40,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:58:40,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:58:40,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:58:40,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:58:40,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:58:40,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:58:40,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:58:40,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:58:40,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:58:40,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:58:40,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:58:40,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:58:40,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:58:40,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:58:40,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:58:40,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:58:40,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:58:40,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:58:40,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:58:40,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:58:40,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:58:40,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:58:40,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:58:40,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:58:40,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:58:40,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:58:40,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:58:40,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:58:40,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:58:40,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:58:40,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:58:40,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:58:40,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:58:40,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:58:40,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:58:40,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:58:40,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:58:40,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:58:40,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:58:40,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:58:40,820 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:58:40,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:58:40,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:58:40,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:58:40,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:58:40,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:58:40,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:58:40,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:58:40,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:58:40,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:58:40,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:58:40,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:58:40,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:58:40,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:58:40,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:58:40,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:58:40,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:40,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:58:40,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:58:40,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:58:40,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:58:40,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:58:40,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:58:40,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:58:40,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:58:40,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:58:40,827 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_33f4c127-5706-4b4f-8674-70d45fc695aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b285e679a61ee5ec3c0d899a4a7682d4249c0885f5b4a5875891b312f202de4 [2021-11-09 08:58:41,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:58:41,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:58:41,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:58:41,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:58:41,198 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:58:41,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2021-11-09 08:58:41,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/data/0ffdb43cc/ddc0356c79b64cd8b3beb1bd433d6d62/FLAG704541334 [2021-11-09 08:58:41,857 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:58:41,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/sv-benchmarks/c/loop-acceleration/diamond_2-2.c [2021-11-09 08:58:41,866 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/data/0ffdb43cc/ddc0356c79b64cd8b3beb1bd433d6d62/FLAG704541334 [2021-11-09 08:58:42,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/data/0ffdb43cc/ddc0356c79b64cd8b3beb1bd433d6d62 [2021-11-09 08:58:42,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:42,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:58:42,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:42,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:42,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:42,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70439e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42, skipping insertion in model container [2021-11-09 08:58:42,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:42,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:42,433 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_33f4c127-5706-4b4f-8674-70d45fc695aa/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2021-11-09 08:58:42,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:42,468 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:58:42,482 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_33f4c127-5706-4b4f-8674-70d45fc695aa/sv-benchmarks/c/loop-acceleration/diamond_2-2.c[373,386] [2021-11-09 08:58:42,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:42,511 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:58:42,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42 WrapperNode [2021-11-09 08:58:42,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:42,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:42,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:58:42,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:58:42,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:58:42,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:58:42,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:58:42,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:58:42,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:58:42,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:58:42,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:58:42,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:58:42,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (1/1) ... [2021-11-09 08:58:42,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:42,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:42,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:58:42,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:58:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:58:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:58:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:58:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:58:43,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:58:43,110 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-09 08:58:43,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:43 BoogieIcfgContainer [2021-11-09 08:58:43,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:58:43,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:58:43,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:58:43,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:58:43,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:58:42" (1/3) ... [2021-11-09 08:58:43,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b33d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:43, skipping insertion in model container [2021-11-09 08:58:43,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:42" (2/3) ... [2021-11-09 08:58:43,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b33d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:43, skipping insertion in model container [2021-11-09 08:58:43,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:43" (3/3) ... [2021-11-09 08:58:43,125 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2021-11-09 08:58:43,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:58:43,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:58:43,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:58:43,227 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 08:58:43,228 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:58:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 08:58:43,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:43,282 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:58:43,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:43,294 INFO L85 PathProgramCache]: Analyzing trace with hash 891600039, now seen corresponding path program 1 times [2021-11-09 08:58:43,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:43,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793533313] [2021-11-09 08:58:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:43,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:43,504 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 08:58:43,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:43,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793533313] [2021-11-09 08:58:43,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793533313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:43,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:43,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:58:43,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506789790] [2021-11-09 08:58:43,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:58:43,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:58:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:58:43,536 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:43,554 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2021-11-09 08:58:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:58:43,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-09 08:58:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:43,566 INFO L225 Difference]: With dead ends: 27 [2021-11-09 08:58:43,566 INFO L226 Difference]: Without dead ends: 17 [2021-11-09 08:58:43,571 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 08:58:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-09 08:58:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-09 08:58:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 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 08:58:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2021-11-09 08:58:43,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2021-11-09 08:58:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:43,611 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2021-11-09 08:58:43,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2021-11-09 08:58:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 08:58:43,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:43,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 08:58:43,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:58:43,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash 889693415, now seen corresponding path program 1 times [2021-11-09 08:58:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:43,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613010397] [2021-11-09 08:58:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:43,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:43,729 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 08:58:43,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:43,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613010397] [2021-11-09 08:58:43,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613010397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:43,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:43,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:43,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85506960] [2021-11-09 08:58:43,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:43,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:43,745 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:43,832 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2021-11-09 08:58:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-09 08:58:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:43,836 INFO L225 Difference]: With dead ends: 23 [2021-11-09 08:58:43,837 INFO L226 Difference]: Without dead ends: 19 [2021-11-09 08:58:43,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-09 08:58:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-09 08:58:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-11-09 08:58:43,847 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 6 [2021-11-09 08:58:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:43,848 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-11-09 08:58:43,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2021-11-09 08:58:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:58:43,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:43,851 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:43,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:58:43,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1797740634, now seen corresponding path program 1 times [2021-11-09 08:58:43,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:43,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892890403] [2021-11-09 08:58:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:43,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:43,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:43,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892890403] [2021-11-09 08:58:43,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892890403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:43,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:43,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:43,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913376602] [2021-11-09 08:58:43,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:43,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:43,924 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 08:58:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:44,038 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2021-11-09 08:58:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:44,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 08:58:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:44,041 INFO L225 Difference]: With dead ends: 48 [2021-11-09 08:58:44,041 INFO L226 Difference]: Without dead ends: 33 [2021-11-09 08:58:44,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:44,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-09 08:58:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-11-09 08:58:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-11-09 08:58:44,054 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17 [2021-11-09 08:58:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:44,055 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-11-09 08:58:44,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 08:58:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-11-09 08:58:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:58:44,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:44,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:44,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:58:44,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:44,061 INFO L85 PathProgramCache]: Analyzing trace with hash -170777494, now seen corresponding path program 1 times [2021-11-09 08:58:44,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:44,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041383053] [2021-11-09 08:58:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:44,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:44,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:44,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041383053] [2021-11-09 08:58:44,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041383053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:44,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247780344] [2021-11-09 08:58:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:44,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:44,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:44,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:58:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:44,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 08:58:44,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:45,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247780344] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:45,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:58:45,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 11 [2021-11-09 08:58:45,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740069939] [2021-11-09 08:58:45,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:58:45,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:58:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:58:45,158 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:45,346 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-11-09 08:58:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:58:45,347 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 08:58:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:45,349 INFO L225 Difference]: With dead ends: 57 [2021-11-09 08:58:45,350 INFO L226 Difference]: Without dead ends: 30 [2021-11-09 08:58:45,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:58:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-09 08:58:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-09 08:58:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-11-09 08:58:45,361 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 17 [2021-11-09 08:58:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:45,362 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-11-09 08:58:45,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-11-09 08:58:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:58:45,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:45,364 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:45,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:45,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:45,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:45,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash -784776342, now seen corresponding path program 1 times [2021-11-09 08:58:45,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:45,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049289059] [2021-11-09 08:58:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:45,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:45,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:45,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049289059] [2021-11-09 08:58:45,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049289059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:45,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:45,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:45,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114874278] [2021-11-09 08:58:45,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:45,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:45,627 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 08:58:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:45,656 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2021-11-09 08:58:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 08:58:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:45,658 INFO L225 Difference]: With dead ends: 34 [2021-11-09 08:58:45,658 INFO L226 Difference]: Without dead ends: 19 [2021-11-09 08:58:45,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-09 08:58:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-09 08:58:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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 08:58:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-09 08:58:45,662 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 17 [2021-11-09 08:58:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:45,663 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-09 08:58:45,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 08:58:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-09 08:58:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:58:45,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:45,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:45,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:58:45,665 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash -843881686, now seen corresponding path program 1 times [2021-11-09 08:58:45,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:45,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831401066] [2021-11-09 08:58:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:45,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:45,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:45,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831401066] [2021-11-09 08:58:45,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831401066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:45,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571403858] [2021-11-09 08:58:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:45,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:45,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:45,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:45,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:58:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:45,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-09 08:58:45,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:46,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571403858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:46,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:58:46,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-11-09 08:58:46,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784725729] [2021-11-09 08:58:46,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:58:46,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:58:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:58:46,190 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:58:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:46,340 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-11-09 08:58:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:58:46,346 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 08:58:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:46,349 INFO L225 Difference]: With dead ends: 34 [2021-11-09 08:58:46,349 INFO L226 Difference]: Without dead ends: 30 [2021-11-09 08:58:46,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:58:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-09 08:58:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-09 08:58:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 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 08:58:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-09 08:58:46,363 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 17 [2021-11-09 08:58:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:46,363 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-09 08:58:46,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 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 08:58:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-09 08:58:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 08:58:46,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:46,366 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:46,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:46,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:46,590 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2006766329, now seen corresponding path program 2 times [2021-11-09 08:58:46,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:46,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619977237] [2021-11-09 08:58:46,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:46,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:47,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:47,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619977237] [2021-11-09 08:58:47,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619977237] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:47,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248146137] [2021-11-09 08:58:47,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:58:47,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:47,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:47,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 08:58:47,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:58:47,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:58:47,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-09 08:58:47,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:47,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248146137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:47,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:58:47,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-11-09 08:58:47,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424136069] [2021-11-09 08:58:47,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 08:58:47,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:47,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 08:58:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:58:47,719 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:48,138 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-11-09 08:58:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 08:58:48,139 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-09 08:58:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:48,139 INFO L225 Difference]: With dead ends: 45 [2021-11-09 08:58:48,140 INFO L226 Difference]: Without dead ends: 41 [2021-11-09 08:58:48,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:58:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-09 08:58:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-11-09 08:58:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-09 08:58:48,146 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 28 [2021-11-09 08:58:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:48,147 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-09 08:58:48,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-09 08:58:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-09 08:58:48,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:48,149 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:48,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:48,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-09 08:58:48,374 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1182300406, now seen corresponding path program 3 times [2021-11-09 08:58:48,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:48,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833945534] [2021-11-09 08:58:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:48,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:49,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:49,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833945534] [2021-11-09 08:58:49,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833945534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:49,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675488149] [2021-11-09 08:58:49,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:58:49,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:49,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:49,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:49,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 08:58:49,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 08:58:49,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:58:49,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-09 08:58:49,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:49,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675488149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:49,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:58:49,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-11-09 08:58:49,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410318287] [2021-11-09 08:58:49,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 08:58:49,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 08:58:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:58:49,976 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:50,738 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-11-09 08:58:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 08:58:50,739 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-09 08:58:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:50,740 INFO L225 Difference]: With dead ends: 56 [2021-11-09 08:58:50,740 INFO L226 Difference]: Without dead ends: 52 [2021-11-09 08:58:50,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:58:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-09 08:58:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-11-09 08:58:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 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 08:58:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-11-09 08:58:50,748 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 39 [2021-11-09 08:58:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:50,749 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-11-09 08:58:50,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-11-09 08:58:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 08:58:50,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:50,752 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:50,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:50,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:50,958 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:50,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1256465113, now seen corresponding path program 4 times [2021-11-09 08:58:50,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:50,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672724796] [2021-11-09 08:58:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:50,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:52,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:52,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672724796] [2021-11-09 08:58:52,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672724796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:52,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907556949] [2021-11-09 08:58:52,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:58:52,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:52,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:52,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:52,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 08:58:52,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:58:52,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:58:52,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-09 08:58:52,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:55,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907556949] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:55,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:58:55,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44] total 84 [2021-11-09 08:58:55,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358207612] [2021-11-09 08:58:55,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-09 08:58:55,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-09 08:58:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=6688, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 08:58:55,791 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 84 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 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 08:58:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:57,614 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-11-09 08:58:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-09 08:58:57,615 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 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 50 [2021-11-09 08:58:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:57,615 INFO L225 Difference]: With dead ends: 67 [2021-11-09 08:58:57,616 INFO L226 Difference]: Without dead ends: 63 [2021-11-09 08:58:57,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=284, Invalid=6688, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 08:58:57,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-09 08:58:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-11-09 08:58:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-11-09 08:58:57,625 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 50 [2021-11-09 08:58:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:57,626 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-11-09 08:58:57,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 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 08:58:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-11-09 08:58:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 08:58:57,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:57,628 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:57,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:57,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:57,854 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:57,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 28672746, now seen corresponding path program 5 times [2021-11-09 08:58:57,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:57,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183365324] [2021-11-09 08:58:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:57,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-09 08:58:58,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:58,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183365324] [2021-11-09 08:58:58,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183365324] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:58:58,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688690976] [2021-11-09 08:58:58,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:58:58,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:58:58,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:58,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:58:58,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 08:58:59,182 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-09 08:58:59,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:58:59,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-09 08:58:59,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:01,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688690976] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:59:01,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:59:01,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 54] total 57 [2021-11-09 08:59:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690214129] [2021-11-09 08:59:01,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-09 08:59:01,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:59:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-09 08:59:01,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3003, Unknown=0, NotChecked=0, Total=3192 [2021-11-09 08:59:01,467 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 57 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:03,766 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-11-09 08:59:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-09 08:59:03,766 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 08:59:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:03,767 INFO L225 Difference]: With dead ends: 75 [2021-11-09 08:59:03,767 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 08:59:03,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 11 SyntacticMatches, 48 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2021-11-09 08:59:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 08:59:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 08:59:03,770 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 08:59:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 08:59:03,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-11-09 08:59:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:03,771 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 08:59:03,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:59:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 08:59:03,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 08:59:03,775 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:59:03,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:03,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 08:59:03,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 08:59:03,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:59:03,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 08:59:04,078 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,079 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-11-09 08:59:04,079 INFO L860 garLoopResultBuilder]: At program point L7-2(lines 1 50) the Hoare annotation is: true [2021-11-09 08:59:04,079 INFO L857 garLoopResultBuilder]: For program point L36-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,079 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 08:59:04,079 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 08:59:04,079 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 08:59:04,079 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-11-09 08:59:04,079 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L853 garLoopResultBuilder]: At program point L45-1(lines 17 47) the Hoare annotation is: (let ((.cse1 (mod ULTIMATE.start_main_~y~0 2))) (let ((.cse0 (<= .cse1 0))) (or (= ULTIMATE.start_main_~x~0 0) (and (= ULTIMATE.start_main_~x~0 80) .cse0) (and (= (+ ULTIMATE.start_main_~x~0 5) 0) (not (= .cse1 0))) (and .cse0 (<= ULTIMATE.start_main_~x~0 40) (<= 40 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~x~0 100) .cse0) (and (<= ULTIMATE.start_main_~x~0 60) .cse0 (<= 60 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~x~0 20) .cse0)))) [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point L33-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point L21-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,080 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2021-11-09 08:59:04,081 INFO L857 garLoopResultBuilder]: For program point L18-2(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,081 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 17 47) no Hoare annotation was computed. [2021-11-09 08:59:04,085 INFO L731 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2021-11-09 08:59:04,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:59:04,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:59:04 BoogieIcfgContainer [2021-11-09 08:59:04,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:59:04,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:59:04,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:59:04,107 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:59:04,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:43" (3/4) ... [2021-11-09 08:59:04,112 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 08:59:04,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-09 08:59:04,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 08:59:04,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:59:04,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 08:59:04,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:59:04,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:59:04,178 INFO L168 Benchmark]: Toolchain (without parser) took 21985.13 ms. Allocated memory was 88.1 MB in the beginning and 163.6 MB in the end (delta: 75.5 MB). Free memory was 51.4 MB in the beginning and 99.0 MB in the end (delta: -47.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:59:04,179 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:59:04,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.80 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.2 MB in the beginning and 88.5 MB in the end (delta: -37.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:59:04,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.97 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:59:04,181 INFO L168 Benchmark]: Boogie Preprocessor took 58.17 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:59:04,181 INFO L168 Benchmark]: RCFGBuilder took 461.51 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 74.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:59:04,182 INFO L168 Benchmark]: TraceAbstraction took 20990.60 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 74.2 MB in the beginning and 102.1 MB in the end (delta: -27.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2021-11-09 08:59:04,183 INFO L168 Benchmark]: Witness Printer took 69.74 ms. Allocated memory is still 163.6 MB. Free memory was 102.1 MB in the beginning and 99.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:59:04,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory is still 67.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.80 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.2 MB in the beginning and 88.5 MB in the end (delta: -37.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.97 ms. Allocated memory is still 113.2 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.17 ms. Allocated memory is still 113.2 MB. Free memory was 86.8 MB in the beginning and 85.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 461.51 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 74.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20990.60 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 74.2 MB in the beginning and 102.1 MB in the end (delta: -27.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 69.74 ms. Allocated memory is still 163.6 MB. Free memory was 102.1 MB in the beginning and 99.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: 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, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.8s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 47 SDslu, 298 SDs, 0 SdLazy, 8151 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 130 SyntacticMatches, 57 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=9, InterpolantAutomatonStates: 186, 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, 10 MinimizatonAttempts, 10 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 68 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 62 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 470 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 4035 SizeOfPredicates, 12 NumberOfNonLiveVariables, 870 ConjunctsInSsa, 347 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 104/474 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 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((x == 0 || (x == 80 && y % 2 <= 0)) || (x + 5 == 0 && !(y % 2 == 0))) || ((y % 2 <= 0 && x <= 40) && 40 <= x)) || (x == 100 && y % 2 <= 0)) || ((x <= 60 && y % 2 <= 0) && 60 <= x)) || (x == 20 && y % 2 <= 0) RESULT: Ultimate proved your program to be correct! [2021-11-09 08:59:04,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f4c127-5706-4b4f-8674-70d45fc695aa/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