./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/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_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:38:13,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:38:13,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:38:13,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:38:13,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:38:13,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:38:13,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:38:13,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:38:13,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:38:13,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:38:13,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:38:13,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:38:13,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:38:13,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:38:13,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:38:13,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:38:13,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:38:13,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:38:13,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:38:13,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:38:13,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:38:13,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:38:13,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:38:13,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:38:13,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:38:13,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:38:13,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:38:13,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:38:13,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:38:13,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:38:13,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:38:13,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:38:13,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:38:13,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:38:13,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:38:13,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:38:13,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:38:13,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:38:13,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:38:13,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:38:13,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:38:13,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-09 08:38:13,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:38:13,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:38:13,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:38:13,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:38:13,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:38:13,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:38:13,762 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:38:13,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:38:13,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:38:13,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:38:13,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:38:13,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:38:13,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:38:13,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:38:13,766 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 08:38:13,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:38:13,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:38:13,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:38:13,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:38:13,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:38:13,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:38:13,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:38:13,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:38:13,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:38:13,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:38:13,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:38:13,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:38:13,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:38:13,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:38:13,774 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_0490d536-7e14-4705-97e1-9ff76d254688/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2021-11-09 08:38:14,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:38:14,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:38:14,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:38:14,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:38:14,238 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:38:14,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-numeric/Binomial.c [2021-11-09 08:38:14,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/data/0035f432c/79601c44d69b4039821e7be6a09bbfc9/FLAG5984092b7 [2021-11-09 08:38:14,989 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:38:14,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/sv-benchmarks/c/termination-numeric/Binomial.c [2021-11-09 08:38:14,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/data/0035f432c/79601c44d69b4039821e7be6a09bbfc9/FLAG5984092b7 [2021-11-09 08:38:15,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/data/0035f432c/79601c44d69b4039821e7be6a09bbfc9 [2021-11-09 08:38:15,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:38:15,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:38:15,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:38:15,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:38:15,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:38:15,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5143fe80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15, skipping insertion in model container [2021-11-09 08:38:15,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:38:15,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:38:15,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:38:15,633 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:38:15,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:38:15,672 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:38:15,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15 WrapperNode [2021-11-09 08:38:15,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:38:15,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:38:15,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:38:15,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:38:15,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:38:15,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:38:15,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:38:15,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:38:15,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:38:15,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:38:15,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:38:15,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:38:15,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (1/1) ... [2021-11-09 08:38:15,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:38:15,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:15,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:38:15,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:38:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2021-11-09 08:38:15,860 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2021-11-09 08:38:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:38:15,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:38:16,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:38:16,254 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 08:38:16,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:38:16 BoogieIcfgContainer [2021-11-09 08:38:16,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:38:16,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:38:16,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:38:16,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:38:16,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:38:15" (1/3) ... [2021-11-09 08:38:16,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:38:16, skipping insertion in model container [2021-11-09 08:38:16,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:15" (2/3) ... [2021-11-09 08:38:16,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:38:16, skipping insertion in model container [2021-11-09 08:38:16,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:38:16" (3/3) ... [2021-11-09 08:38:16,270 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2021-11-09 08:38:16,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:38:16,293 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-09 08:38:16,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:38:16,422 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:38:16,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-09 08:38:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-09 08:38:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:38:16,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:16,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:16,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash 306418195, now seen corresponding path program 1 times [2021-11-09 08:38:16,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:16,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832139000] [2021-11-09 08:38:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:16,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:16,726 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 08:38:16,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:16,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832139000] [2021-11-09 08:38:16,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832139000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:16,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:16,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:38:16,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821788170] [2021-11-09 08:38:16,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:38:16,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:38:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:38:16,795 INFO L87 Difference]: Start difference. First operand has 71 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 08:38:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:16,861 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2021-11-09 08:38:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:38:16,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-09 08:38:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:16,878 INFO L225 Difference]: With dead ends: 139 [2021-11-09 08:38:16,879 INFO L226 Difference]: Without dead ends: 68 [2021-11-09 08:38:16,887 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 08:38:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-09 08:38:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-09 08:38:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.575) internal successors, (63), 59 states have internal predecessors, (63), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-09 08:38:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-11-09 08:38:16,938 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 7 [2021-11-09 08:38:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:16,939 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-11-09 08:38:16,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 08:38:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-11-09 08:38:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:38:16,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:16,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:16,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:38:16,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash 306365340, now seen corresponding path program 1 times [2021-11-09 08:38:16,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:16,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532860421] [2021-11-09 08:38:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:16,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:17,020 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 08:38:17,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:17,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532860421] [2021-11-09 08:38:17,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532860421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:17,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:17,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:38:17,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317565710] [2021-11-09 08:38:17,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:38:17,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:38:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:38:17,028 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 08:38:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:17,140 INFO L93 Difference]: Finished difference Result 134 states and 153 transitions. [2021-11-09 08:38:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:38:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-09 08:38:17,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:17,143 INFO L225 Difference]: With dead ends: 134 [2021-11-09 08:38:17,144 INFO L226 Difference]: Without dead ends: 69 [2021-11-09 08:38:17,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-09 08:38:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-09 08:38:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 60 states have internal predecessors, (64), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-09 08:38:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2021-11-09 08:38:17,163 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 7 [2021-11-09 08:38:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:17,164 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2021-11-09 08:38:17,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 08:38:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2021-11-09 08:38:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 08:38:17,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:17,166 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:17,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:38:17,167 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash 154399188, now seen corresponding path program 1 times [2021-11-09 08:38:17,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:17,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17966915] [2021-11-09 08:38:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:17,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:17,219 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 08:38:17,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:17,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17966915] [2021-11-09 08:38:17,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17966915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:17,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:17,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:38:17,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522460834] [2021-11-09 08:38:17,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:38:17,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:17,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:38:17,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:38:17,225 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:17,333 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2021-11-09 08:38:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:38:17,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 08:38:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:17,337 INFO L225 Difference]: With dead ends: 198 [2021-11-09 08:38:17,337 INFO L226 Difference]: Without dead ends: 132 [2021-11-09 08:38:17,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:17,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-09 08:38:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 72. [2021-11-09 08:38:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 63 states have internal predecessors, (67), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-09 08:38:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-11-09 08:38:17,361 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 10 [2021-11-09 08:38:17,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:17,362 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-11-09 08:38:17,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:17,362 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-11-09 08:38:17,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 08:38:17,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:17,364 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:17,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:38:17,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:17,366 INFO L85 PathProgramCache]: Analyzing trace with hash 133902980, now seen corresponding path program 1 times [2021-11-09 08:38:17,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:17,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065030523] [2021-11-09 08:38:17,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:17,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:17,467 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 08:38:17,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:17,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065030523] [2021-11-09 08:38:17,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065030523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:17,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:17,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:38:17,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230785404] [2021-11-09 08:38:17,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:38:17,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:17,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:38:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:38:17,475 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:17,682 INFO L93 Difference]: Finished difference Result 209 states and 250 transitions. [2021-11-09 08:38:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:38:17,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 08:38:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:17,692 INFO L225 Difference]: With dead ends: 209 [2021-11-09 08:38:17,692 INFO L226 Difference]: Without dead ends: 143 [2021-11-09 08:38:17,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-09 08:38:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2021-11-09 08:38:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 91 states have internal predecessors, (111), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 08:38:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2021-11-09 08:38:17,747 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 10 [2021-11-09 08:38:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:17,748 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2021-11-09 08:38:17,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:38:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2021-11-09 08:38:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 08:38:17,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:17,750 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:17,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:38:17,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2023579039, now seen corresponding path program 1 times [2021-11-09 08:38:17,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:17,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873766382] [2021-11-09 08:38:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:17,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 08:38:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:38:17,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:17,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873766382] [2021-11-09 08:38:17,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873766382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:17,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:17,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:38:17,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777229554] [2021-11-09 08:38:17,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:38:17,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:38:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:38:17,850 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:38:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:18,012 INFO L93 Difference]: Finished difference Result 286 states and 388 transitions. [2021-11-09 08:38:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:38:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 08:38:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:18,016 INFO L225 Difference]: With dead ends: 286 [2021-11-09 08:38:18,017 INFO L226 Difference]: Without dead ends: 185 [2021-11-09 08:38:18,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-09 08:38:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 121. [2021-11-09 08:38:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 79 states have (on average 1.5063291139240507) internal successors, (119), 101 states have internal predecessors, (119), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 08:38:18,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2021-11-09 08:38:18,049 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 16 [2021-11-09 08:38:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:18,050 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2021-11-09 08:38:18,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:38:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2021-11-09 08:38:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 08:38:18,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:18,052 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:18,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:38:18,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash -282699610, now seen corresponding path program 1 times [2021-11-09 08:38:18,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:18,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800861680] [2021-11-09 08:38:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:18,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 08:38:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-09 08:38:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 08:38:18,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:18,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800861680] [2021-11-09 08:38:18,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800861680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:18,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:18,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:38:18,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844826116] [2021-11-09 08:38:18,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:38:18,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:38:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:18,139 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 08:38:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:18,285 INFO L93 Difference]: Finished difference Result 181 states and 207 transitions. [2021-11-09 08:38:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:38:18,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-09 08:38:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:18,289 INFO L225 Difference]: With dead ends: 181 [2021-11-09 08:38:18,289 INFO L226 Difference]: Without dead ends: 180 [2021-11-09 08:38:18,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-09 08:38:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 123. [2021-11-09 08:38:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 102 states have internal predecessors, (121), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 08:38:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2021-11-09 08:38:18,314 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 19 [2021-11-09 08:38:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:18,314 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2021-11-09 08:38:18,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 08:38:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2021-11-09 08:38:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-09 08:38:18,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:18,317 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:18,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:38:18,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash -173753234, now seen corresponding path program 1 times [2021-11-09 08:38:18,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:18,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481224173] [2021-11-09 08:38:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:18,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 08:38:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-09 08:38:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 08:38:18,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:18,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481224173] [2021-11-09 08:38:18,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481224173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:18,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:18,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:38:18,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944206536] [2021-11-09 08:38:18,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:38:18,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:38:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:18,396 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 08:38:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:18,539 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2021-11-09 08:38:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:38:18,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-09 08:38:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:18,542 INFO L225 Difference]: With dead ends: 150 [2021-11-09 08:38:18,542 INFO L226 Difference]: Without dead ends: 148 [2021-11-09 08:38:18,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-09 08:38:18,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2021-11-09 08:38:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 100 states have internal predecessors, (117), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-09 08:38:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2021-11-09 08:38:18,584 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 20 [2021-11-09 08:38:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:18,585 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2021-11-09 08:38:18,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 08:38:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2021-11-09 08:38:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:38:18,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:18,588 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:18,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:38:18,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:18,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash -482951234, now seen corresponding path program 1 times [2021-11-09 08:38:18,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:18,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822090479] [2021-11-09 08:38:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:18,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-09 08:38:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-09 08:38:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 08:38:18,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:18,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822090479] [2021-11-09 08:38:18,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822090479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:18,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:18,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:38:18,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292327976] [2021-11-09 08:38:18,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:38:18,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:18,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:38:18,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:38:18,720 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 08:38:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:18,935 INFO L93 Difference]: Finished difference Result 291 states and 363 transitions. [2021-11-09 08:38:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:38:18,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-11-09 08:38:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:18,941 INFO L225 Difference]: With dead ends: 291 [2021-11-09 08:38:18,942 INFO L226 Difference]: Without dead ends: 181 [2021-11-09 08:38:18,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:38:18,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-09 08:38:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 127. [2021-11-09 08:38:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 85 states have (on average 1.423529411764706) internal successors, (121), 105 states have internal predecessors, (121), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:38:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 161 transitions. [2021-11-09 08:38:18,983 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 161 transitions. Word has length 24 [2021-11-09 08:38:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:18,987 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 161 transitions. [2021-11-09 08:38:18,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 08:38:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 161 transitions. [2021-11-09 08:38:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 08:38:18,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:18,989 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:18,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:38:18,989 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash 539716203, now seen corresponding path program 1 times [2021-11-09 08:38:18,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:18,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168769674] [2021-11-09 08:38:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:18,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:19,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:19,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864479315] [2021-11-09 08:38:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:19,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:19,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:19,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:38:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:19,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:38:19,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 08:38:19,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:19,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168769674] [2021-11-09 08:38:19,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:19,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864479315] [2021-11-09 08:38:19,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864479315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:19,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:19,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:38:19,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768554175] [2021-11-09 08:38:19,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:38:19,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:19,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:38:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:19,353 INFO L87 Difference]: Start difference. First operand 127 states and 161 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 08:38:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:19,500 INFO L93 Difference]: Finished difference Result 203 states and 276 transitions. [2021-11-09 08:38:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:38:19,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-11-09 08:38:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:19,506 INFO L225 Difference]: With dead ends: 203 [2021-11-09 08:38:19,506 INFO L226 Difference]: Without dead ends: 199 [2021-11-09 08:38:19,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-09 08:38:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 157. [2021-11-09 08:38:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 127 states have internal predecessors, (150), 24 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (42), 25 states have call predecessors, (42), 24 states have call successors, (42) [2021-11-09 08:38:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 216 transitions. [2021-11-09 08:38:19,534 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 216 transitions. Word has length 27 [2021-11-09 08:38:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:19,537 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 216 transitions. [2021-11-09 08:38:19,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 08:38:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 216 transitions. [2021-11-09 08:38:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 08:38:19,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:19,539 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:19,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:19,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:19,754 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1023768851, now seen corresponding path program 1 times [2021-11-09 08:38:19,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:19,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399078469] [2021-11-09 08:38:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:19,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:19,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:19,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787584596] [2021-11-09 08:38:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:19,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:19,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:19,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:38:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:19,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:38:19,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 08:38:20,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:20,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399078469] [2021-11-09 08:38:20,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:20,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787584596] [2021-11-09 08:38:20,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787584596] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:20,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:20,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 08:38:20,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301467869] [2021-11-09 08:38:20,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:38:20,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:38:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:38:20,142 INFO L87 Difference]: Start difference. First operand 157 states and 216 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 08:38:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:20,390 INFO L93 Difference]: Finished difference Result 267 states and 364 transitions. [2021-11-09 08:38:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:38:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-11-09 08:38:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:20,397 INFO L225 Difference]: With dead ends: 267 [2021-11-09 08:38:20,397 INFO L226 Difference]: Without dead ends: 263 [2021-11-09 08:38:20,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:38:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-09 08:38:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 196. [2021-11-09 08:38:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 141 states have (on average 1.3049645390070923) internal successors, (184), 155 states have internal predecessors, (184), 32 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (56), 36 states have call predecessors, (56), 32 states have call successors, (56) [2021-11-09 08:38:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 272 transitions. [2021-11-09 08:38:20,434 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 272 transitions. Word has length 29 [2021-11-09 08:38:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:20,434 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 272 transitions. [2021-11-09 08:38:20,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 08:38:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 272 transitions. [2021-11-09 08:38:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-09 08:38:20,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:20,441 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:20,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:20,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:20,666 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash 595557041, now seen corresponding path program 1 times [2021-11-09 08:38:20,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:20,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093895962] [2021-11-09 08:38:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:20,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:20,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:20,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858320252] [2021-11-09 08:38:20,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:20,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:20,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:20,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:20,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 08:38:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:20,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:38:20,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 08:38:20,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:20,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093895962] [2021-11-09 08:38:20,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:20,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858320252] [2021-11-09 08:38:20,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858320252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:20,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:20,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:38:20,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418136426] [2021-11-09 08:38:20,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:38:20,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:20,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:38:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:38:20,924 INFO L87 Difference]: Start difference. First operand 196 states and 272 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:20,980 INFO L93 Difference]: Finished difference Result 264 states and 352 transitions. [2021-11-09 08:38:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:38:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-11-09 08:38:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:20,986 INFO L225 Difference]: With dead ends: 264 [2021-11-09 08:38:20,986 INFO L226 Difference]: Without dead ends: 263 [2021-11-09 08:38:20,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-09 08:38:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 250. [2021-11-09 08:38:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 191 states have (on average 1.287958115183246) internal successors, (246), 198 states have internal predecessors, (246), 36 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (64), 47 states have call predecessors, (64), 36 states have call successors, (64) [2021-11-09 08:38:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 346 transitions. [2021-11-09 08:38:21,019 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 346 transitions. Word has length 33 [2021-11-09 08:38:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:21,020 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 346 transitions. [2021-11-09 08:38:21,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 346 transitions. [2021-11-09 08:38:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-09 08:38:21,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:21,030 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:21,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:21,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:21,257 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:21,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1282399211, now seen corresponding path program 1 times [2021-11-09 08:38:21,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:21,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174405830] [2021-11-09 08:38:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:21,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:21,280 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:21,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897074870] [2021-11-09 08:38:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:21,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:21,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:21,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:21,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 08:38:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:21,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:38:21,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 08:38:21,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:21,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174405830] [2021-11-09 08:38:21,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:21,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897074870] [2021-11-09 08:38:21,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897074870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:21,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:21,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:38:21,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878008770] [2021-11-09 08:38:21,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:38:21,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:21,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:38:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:38:21,519 INFO L87 Difference]: Start difference. First operand 250 states and 346 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:21,559 INFO L93 Difference]: Finished difference Result 250 states and 346 transitions. [2021-11-09 08:38:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:38:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-11-09 08:38:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:21,565 INFO L225 Difference]: With dead ends: 250 [2021-11-09 08:38:21,565 INFO L226 Difference]: Without dead ends: 249 [2021-11-09 08:38:21,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-09 08:38:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-09 08:38:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 191 states have (on average 1.2774869109947644) internal successors, (244), 197 states have internal predecessors, (244), 36 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (64), 47 states have call predecessors, (64), 36 states have call successors, (64) [2021-11-09 08:38:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 344 transitions. [2021-11-09 08:38:21,607 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 344 transitions. Word has length 34 [2021-11-09 08:38:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:21,608 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 344 transitions. [2021-11-09 08:38:21,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 344 transitions. [2021-11-09 08:38:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-09 08:38:21,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:21,611 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:21,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:21,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:21,834 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:21,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash 220869310, now seen corresponding path program 1 times [2021-11-09 08:38:21,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:21,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153301655] [2021-11-09 08:38:21,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:21,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:21,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:21,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073573057] [2021-11-09 08:38:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:21,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:21,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:21,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:21,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 08:38:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:21,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:38:21,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-09 08:38:22,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:22,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153301655] [2021-11-09 08:38:22,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:22,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073573057] [2021-11-09 08:38:22,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073573057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:22,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:22,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:38:22,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225375424] [2021-11-09 08:38:22,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:38:22,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:38:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:38:22,126 INFO L87 Difference]: Start difference. First operand 249 states and 344 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:22,171 INFO L93 Difference]: Finished difference Result 265 states and 349 transitions. [2021-11-09 08:38:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:38:22,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2021-11-09 08:38:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:22,175 INFO L225 Difference]: With dead ends: 265 [2021-11-09 08:38:22,175 INFO L226 Difference]: Without dead ends: 264 [2021-11-09 08:38:22,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-09 08:38:22,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 251. [2021-11-09 08:38:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 193 states have (on average 1.2746113989637307) internal successors, (246), 199 states have internal predecessors, (246), 36 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (64), 47 states have call predecessors, (64), 36 states have call successors, (64) [2021-11-09 08:38:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 346 transitions. [2021-11-09 08:38:22,202 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 346 transitions. Word has length 37 [2021-11-09 08:38:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:22,202 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 346 transitions. [2021-11-09 08:38:22,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 346 transitions. [2021-11-09 08:38:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:38:22,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:22,204 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:22,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:22,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 08:38:22,422 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1742985850, now seen corresponding path program 1 times [2021-11-09 08:38:22,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:22,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404858375] [2021-11-09 08:38:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:22,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:22,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:22,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252767979] [2021-11-09 08:38:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:22,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:22,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:22,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:22,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 08:38:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:22,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:38:22,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-09 08:38:22,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:22,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404858375] [2021-11-09 08:38:22,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:22,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252767979] [2021-11-09 08:38:22,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252767979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:22,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:22,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:38:22,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498050213] [2021-11-09 08:38:22,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:38:22,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:38:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:38:22,721 INFO L87 Difference]: Start difference. First operand 251 states and 346 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:22,756 INFO L93 Difference]: Finished difference Result 251 states and 346 transitions. [2021-11-09 08:38:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:38:22,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-11-09 08:38:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:22,760 INFO L225 Difference]: With dead ends: 251 [2021-11-09 08:38:22,760 INFO L226 Difference]: Without dead ends: 250 [2021-11-09 08:38:22,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-09 08:38:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-11-09 08:38:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 193 states have (on average 1.2694300518134716) internal successors, (245), 198 states have internal predecessors, (245), 36 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (64), 47 states have call predecessors, (64), 36 states have call successors, (64) [2021-11-09 08:38:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 345 transitions. [2021-11-09 08:38:22,786 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 345 transitions. Word has length 38 [2021-11-09 08:38:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:22,786 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 345 transitions. [2021-11-09 08:38:22,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 345 transitions. [2021-11-09 08:38:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 08:38:22,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:22,788 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:22,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:23,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 08:38:23,006 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 57775986, now seen corresponding path program 1 times [2021-11-09 08:38:23,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:23,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126646339] [2021-11-09 08:38:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:23,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:23,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:23,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695976661] [2021-11-09 08:38:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:23,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:23,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:23,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 08:38:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:38:23,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 08:38:23,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:23,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126646339] [2021-11-09 08:38:23,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:23,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695976661] [2021-11-09 08:38:23,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695976661] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:23,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:23,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 08:38:23,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129853821] [2021-11-09 08:38:23,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:38:23,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:38:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:23,337 INFO L87 Difference]: Start difference. First operand 250 states and 345 transitions. Second operand has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:23,635 INFO L93 Difference]: Finished difference Result 451 states and 610 transitions. [2021-11-09 08:38:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:38:23,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-09 08:38:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:23,641 INFO L225 Difference]: With dead ends: 451 [2021-11-09 08:38:23,641 INFO L226 Difference]: Without dead ends: 450 [2021-11-09 08:38:23,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:38:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-09 08:38:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 270. [2021-11-09 08:38:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 208 states have (on average 1.2884615384615385) internal successors, (268), 216 states have internal predecessors, (268), 39 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (70), 48 states have call predecessors, (70), 39 states have call successors, (70) [2021-11-09 08:38:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 377 transitions. [2021-11-09 08:38:23,675 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 377 transitions. Word has length 40 [2021-11-09 08:38:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:23,677 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 377 transitions. [2021-11-09 08:38:23,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 377 transitions. [2021-11-09 08:38:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 08:38:23,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:23,679 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:23,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:23,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 08:38:23,895 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1791055604, now seen corresponding path program 1 times [2021-11-09 08:38:23,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:23,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747220611] [2021-11-09 08:38:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:23,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:23,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:23,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706759946] [2021-11-09 08:38:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:23,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:23,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:23,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:23,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 08:38:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:38:24,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-09 08:38:24,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:24,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747220611] [2021-11-09 08:38:24,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:24,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706759946] [2021-11-09 08:38:24,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706759946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:24,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:24,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:38:24,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285731283] [2021-11-09 08:38:24,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:38:24,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:38:24,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:38:24,211 INFO L87 Difference]: Start difference. First operand 270 states and 377 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:24,238 INFO L93 Difference]: Finished difference Result 270 states and 377 transitions. [2021-11-09 08:38:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:38:24,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2021-11-09 08:38:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:24,242 INFO L225 Difference]: With dead ends: 270 [2021-11-09 08:38:24,242 INFO L226 Difference]: Without dead ends: 269 [2021-11-09 08:38:24,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 08:38:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-09 08:38:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-11-09 08:38:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 208 states have (on average 1.2788461538461537) internal successors, (266), 215 states have internal predecessors, (266), 39 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (70), 48 states have call predecessors, (70), 39 states have call successors, (70) [2021-11-09 08:38:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2021-11-09 08:38:24,267 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 41 [2021-11-09 08:38:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:24,267 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2021-11-09 08:38:24,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2021-11-09 08:38:24,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 08:38:24,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:24,269 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:24,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:24,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:24,494 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash 724802482, now seen corresponding path program 1 times [2021-11-09 08:38:24,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:24,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865355909] [2021-11-09 08:38:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:24,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:24,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:24,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762268717] [2021-11-09 08:38:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:24,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:24,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:24,507 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:24,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 08:38:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:24,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:38:24,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 08:38:25,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:25,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865355909] [2021-11-09 08:38:25,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:25,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762268717] [2021-11-09 08:38:25,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762268717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:25,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:25,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:38:25,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300730792] [2021-11-09 08:38:25,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:38:25,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:38:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:25,070 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:25,285 INFO L93 Difference]: Finished difference Result 527 states and 708 transitions. [2021-11-09 08:38:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:38:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-11-09 08:38:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:25,289 INFO L225 Difference]: With dead ends: 527 [2021-11-09 08:38:25,289 INFO L226 Difference]: Without dead ends: 347 [2021-11-09 08:38:25,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:38:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-09 08:38:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 269. [2021-11-09 08:38:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 208 states have (on average 1.2740384615384615) internal successors, (265), 215 states have internal predecessors, (265), 39 states have call successors, (39), 5 states have call predecessors, (39), 7 states have return successors, (70), 48 states have call predecessors, (70), 39 states have call successors, (70) [2021-11-09 08:38:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 374 transitions. [2021-11-09 08:38:25,316 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 374 transitions. Word has length 45 [2021-11-09 08:38:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:25,316 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 374 transitions. [2021-11-09 08:38:25,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:38:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 374 transitions. [2021-11-09 08:38:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 08:38:25,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:25,318 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:25,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:25,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 08:38:25,531 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1157697575, now seen corresponding path program 1 times [2021-11-09 08:38:25,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:25,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552010918] [2021-11-09 08:38:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:25,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:25,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:25,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704343684] [2021-11-09 08:38:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:25,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:25,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:25,544 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:25,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 08:38:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:25,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:38:25,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 08:38:26,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:26,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552010918] [2021-11-09 08:38:26,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:26,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704343684] [2021-11-09 08:38:26,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704343684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:26,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:26,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:38:26,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082089890] [2021-11-09 08:38:26,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:38:26,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:38:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:26,015 INFO L87 Difference]: Start difference. First operand 269 states and 374 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 08:38:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:26,323 INFO L93 Difference]: Finished difference Result 472 states and 641 transitions. [2021-11-09 08:38:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:38:26,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-11-09 08:38:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:26,326 INFO L225 Difference]: With dead ends: 472 [2021-11-09 08:38:26,326 INFO L226 Difference]: Without dead ends: 231 [2021-11-09 08:38:26,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:38:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-09 08:38:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 214. [2021-11-09 08:38:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 163 states have (on average 1.2822085889570551) internal successors, (209), 174 states have internal predecessors, (209), 29 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (46), 34 states have call predecessors, (46), 29 states have call successors, (46) [2021-11-09 08:38:26,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 284 transitions. [2021-11-09 08:38:26,351 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 284 transitions. Word has length 46 [2021-11-09 08:38:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:26,351 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 284 transitions. [2021-11-09 08:38:26,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 08:38:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 284 transitions. [2021-11-09 08:38:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 08:38:26,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:26,353 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:26,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:26,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:26,578 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1962570407, now seen corresponding path program 1 times [2021-11-09 08:38:26,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:26,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702373459] [2021-11-09 08:38:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:26,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:26,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:26,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430327589] [2021-11-09 08:38:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:26,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:26,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:26,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:26,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 08:38:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:26,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 08:38:26,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-09 08:38:27,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:27,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702373459] [2021-11-09 08:38:27,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:27,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430327589] [2021-11-09 08:38:27,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430327589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:27,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:27,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:38:27,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937461498] [2021-11-09 08:38:27,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:38:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:27,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:38:27,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:38:27,076 INFO L87 Difference]: Start difference. First operand 214 states and 284 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 08:38:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:27,387 INFO L93 Difference]: Finished difference Result 342 states and 436 transitions. [2021-11-09 08:38:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:38:27,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-11-09 08:38:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:27,394 INFO L225 Difference]: With dead ends: 342 [2021-11-09 08:38:27,395 INFO L226 Difference]: Without dead ends: 338 [2021-11-09 08:38:27,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:38:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-09 08:38:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 227. [2021-11-09 08:38:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 174 states have (on average 1.2758620689655173) internal successors, (222), 184 states have internal predecessors, (222), 30 states have call successors, (30), 6 states have call predecessors, (30), 8 states have return successors, (48), 36 states have call predecessors, (48), 30 states have call successors, (48) [2021-11-09 08:38:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2021-11-09 08:38:27,417 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 48 [2021-11-09 08:38:27,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:27,417 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2021-11-09 08:38:27,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 08:38:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2021-11-09 08:38:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 08:38:27,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:27,419 INFO L513 BasicCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:27,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:27,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:27,634 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:27,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1293628687, now seen corresponding path program 2 times [2021-11-09 08:38:27,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:27,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086295409] [2021-11-09 08:38:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:27,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:27,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:27,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851634666] [2021-11-09 08:38:27,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:38:27,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:27,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:27,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 08:38:27,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:38:27,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:27,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 08:38:27,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 08:38:28,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:28,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086295409] [2021-11-09 08:38:28,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:28,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851634666] [2021-11-09 08:38:28,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851634666] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:28,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:28,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-09 08:38:28,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342684165] [2021-11-09 08:38:28,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:38:28,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:28,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:38:28,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:38:28,151 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 08:38:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:28,442 INFO L93 Difference]: Finished difference Result 541 states and 708 transitions. [2021-11-09 08:38:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:38:28,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2021-11-09 08:38:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:28,446 INFO L225 Difference]: With dead ends: 541 [2021-11-09 08:38:28,446 INFO L226 Difference]: Without dead ends: 347 [2021-11-09 08:38:28,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:38:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-09 08:38:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 228. [2021-11-09 08:38:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 174 states have (on average 1.264367816091954) internal successors, (220), 185 states have internal predecessors, (220), 30 states have call successors, (30), 7 states have call predecessors, (30), 9 states have return successors, (46), 35 states have call predecessors, (46), 30 states have call successors, (46) [2021-11-09 08:38:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 296 transitions. [2021-11-09 08:38:28,469 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 296 transitions. Word has length 53 [2021-11-09 08:38:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:28,469 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 296 transitions. [2021-11-09 08:38:28,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 08:38:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 296 transitions. [2021-11-09 08:38:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 08:38:28,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:28,471 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:28,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:28,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:28,694 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 448565911, now seen corresponding path program 1 times [2021-11-09 08:38:28,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:28,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037546874] [2021-11-09 08:38:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:28,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:28,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:28,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156697466] [2021-11-09 08:38:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:28,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:28,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:28,705 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:28,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 08:38:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:28,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:38:28,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-09 08:38:29,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:29,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037546874] [2021-11-09 08:38:29,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:29,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156697466] [2021-11-09 08:38:29,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156697466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:29,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:29,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:38:29,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251601314] [2021-11-09 08:38:29,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:38:29,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:38:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:38:29,175 INFO L87 Difference]: Start difference. First operand 228 states and 296 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 08:38:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:29,313 INFO L93 Difference]: Finished difference Result 437 states and 562 transitions. [2021-11-09 08:38:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:38:29,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 56 [2021-11-09 08:38:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:29,317 INFO L225 Difference]: With dead ends: 437 [2021-11-09 08:38:29,318 INFO L226 Difference]: Without dead ends: 242 [2021-11-09 08:38:29,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-09 08:38:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 232. [2021-11-09 08:38:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 177 states have (on average 1.2542372881355932) internal successors, (222), 188 states have internal predecessors, (222), 29 states have call successors, (29), 9 states have call predecessors, (29), 11 states have return successors, (43), 34 states have call predecessors, (43), 29 states have call successors, (43) [2021-11-09 08:38:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 294 transitions. [2021-11-09 08:38:29,344 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 294 transitions. Word has length 56 [2021-11-09 08:38:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:29,345 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 294 transitions. [2021-11-09 08:38:29,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 08:38:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 294 transitions. [2021-11-09 08:38:29,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 08:38:29,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:29,346 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:29,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:29,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:29,561 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:29,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1583287798, now seen corresponding path program 1 times [2021-11-09 08:38:29,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:29,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096990455] [2021-11-09 08:38:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:29,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:29,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:29,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310211552] [2021-11-09 08:38:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:29,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:29,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:29,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:29,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 08:38:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:29,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:38:29,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-09 08:38:30,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:30,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096990455] [2021-11-09 08:38:30,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:30,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310211552] [2021-11-09 08:38:30,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310211552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:30,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:30,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 08:38:30,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501706239] [2021-11-09 08:38:30,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:38:30,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:38:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:38:30,209 INFO L87 Difference]: Start difference. First operand 232 states and 294 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 08:38:30,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:30,351 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2021-11-09 08:38:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:38:30,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2021-11-09 08:38:30,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:30,355 INFO L225 Difference]: With dead ends: 271 [2021-11-09 08:38:30,355 INFO L226 Difference]: Without dead ends: 270 [2021-11-09 08:38:30,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:38:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-09 08:38:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 236. [2021-11-09 08:38:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 180 states have (on average 1.25) internal successors, (225), 190 states have internal predecessors, (225), 30 states have call successors, (30), 9 states have call predecessors, (30), 11 states have return successors, (44), 36 states have call predecessors, (44), 30 states have call successors, (44) [2021-11-09 08:38:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2021-11-09 08:38:30,375 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 59 [2021-11-09 08:38:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:30,376 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2021-11-09 08:38:30,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 08:38:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2021-11-09 08:38:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:38:30,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:30,377 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:30,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:30,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-09 08:38:30,600 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1646027842, now seen corresponding path program 1 times [2021-11-09 08:38:30,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:30,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850476038] [2021-11-09 08:38:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:30,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:30,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:30,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185459361] [2021-11-09 08:38:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:30,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:30,613 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:30,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 08:38:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:30,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 08:38:30,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-09 08:38:31,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:31,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850476038] [2021-11-09 08:38:31,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:31,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185459361] [2021-11-09 08:38:31,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185459361] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:31,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:31,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 08:38:31,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30376356] [2021-11-09 08:38:31,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:38:31,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:38:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:31,278 INFO L87 Difference]: Start difference. First operand 236 states and 299 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 08:38:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:31,557 INFO L93 Difference]: Finished difference Result 299 states and 360 transitions. [2021-11-09 08:38:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:38:31,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2021-11-09 08:38:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:31,561 INFO L225 Difference]: With dead ends: 299 [2021-11-09 08:38:31,561 INFO L226 Difference]: Without dead ends: 298 [2021-11-09 08:38:31,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:38:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-09 08:38:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 264. [2021-11-09 08:38:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 201 states have (on average 1.2388059701492538) internal successors, (249), 213 states have internal predecessors, (249), 33 states have call successors, (33), 12 states have call predecessors, (33), 15 states have return successors, (49), 38 states have call predecessors, (49), 33 states have call successors, (49) [2021-11-09 08:38:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 331 transitions. [2021-11-09 08:38:31,583 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 331 transitions. Word has length 64 [2021-11-09 08:38:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:31,584 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 331 transitions. [2021-11-09 08:38:31,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-09 08:38:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 331 transitions. [2021-11-09 08:38:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:38:31,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:31,592 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:31,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:31,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-09 08:38:31,806 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1045826931, now seen corresponding path program 1 times [2021-11-09 08:38:31,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:31,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959985668] [2021-11-09 08:38:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:31,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:31,817 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:31,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140946203] [2021-11-09 08:38:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:31,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:31,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:31,820 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:31,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 08:38:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:32,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 08:38:32,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-09 08:38:32,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:32,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959985668] [2021-11-09 08:38:32,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:32,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140946203] [2021-11-09 08:38:32,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140946203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:32,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:32,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:38:32,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943437170] [2021-11-09 08:38:32,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:38:32,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:38:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:32,586 INFO L87 Difference]: Start difference. First operand 264 states and 331 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 08:38:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:32,903 INFO L93 Difference]: Finished difference Result 466 states and 589 transitions. [2021-11-09 08:38:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:38:32,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-11-09 08:38:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:32,907 INFO L225 Difference]: With dead ends: 466 [2021-11-09 08:38:32,908 INFO L226 Difference]: Without dead ends: 271 [2021-11-09 08:38:32,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:38:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-09 08:38:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 261. [2021-11-09 08:38:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 198 states have (on average 1.2424242424242424) internal successors, (246), 211 states have internal predecessors, (246), 33 states have call successors, (33), 12 states have call predecessors, (33), 15 states have return successors, (47), 37 states have call predecessors, (47), 33 states have call successors, (47) [2021-11-09 08:38:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 326 transitions. [2021-11-09 08:38:32,930 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 326 transitions. Word has length 69 [2021-11-09 08:38:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:32,931 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 326 transitions. [2021-11-09 08:38:32,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 08:38:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 326 transitions. [2021-11-09 08:38:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 08:38:32,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:32,933 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:32,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:33,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:33,158 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:33,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1450932827, now seen corresponding path program 1 times [2021-11-09 08:38:33,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:33,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880864808] [2021-11-09 08:38:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:33,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:33,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:33,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130379339] [2021-11-09 08:38:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:33,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:33,187 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:33,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 08:38:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:33,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 08:38:33,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-09 08:38:34,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:34,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880864808] [2021-11-09 08:38:34,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:34,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130379339] [2021-11-09 08:38:34,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130379339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:34,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:34,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-09 08:38:34,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773502114] [2021-11-09 08:38:34,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:38:34,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:34,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:38:34,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:38:34,024 INFO L87 Difference]: Start difference. First operand 261 states and 326 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 08:38:34,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:34,358 INFO L93 Difference]: Finished difference Result 297 states and 356 transitions. [2021-11-09 08:38:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:38:34,358 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 72 [2021-11-09 08:38:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:34,362 INFO L225 Difference]: With dead ends: 297 [2021-11-09 08:38:34,362 INFO L226 Difference]: Without dead ends: 296 [2021-11-09 08:38:34,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:38:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-09 08:38:34,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 263. [2021-11-09 08:38:34,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 200 states have (on average 1.24) internal successors, (248), 212 states have internal predecessors, (248), 33 states have call successors, (33), 12 states have call predecessors, (33), 15 states have return successors, (47), 38 states have call predecessors, (47), 33 states have call successors, (47) [2021-11-09 08:38:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 328 transitions. [2021-11-09 08:38:34,383 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 328 transitions. Word has length 72 [2021-11-09 08:38:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:34,383 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 328 transitions. [2021-11-09 08:38:34,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 08:38:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 328 transitions. [2021-11-09 08:38:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 08:38:34,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:34,385 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:34,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:34,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-09 08:38:34,610 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:34,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:34,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2029244633, now seen corresponding path program 1 times [2021-11-09 08:38:34,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:34,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36170890] [2021-11-09 08:38:34,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:34,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:34,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:34,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185844745] [2021-11-09 08:38:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:34,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:34,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:34,629 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:34,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 08:38:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:35,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:38:35,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-09 08:38:35,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:35,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36170890] [2021-11-09 08:38:35,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:35,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185844745] [2021-11-09 08:38:35,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185844745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:35,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:35,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:38:35,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879639908] [2021-11-09 08:38:35,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:38:35,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:35,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:38:35,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:38:35,360 INFO L87 Difference]: Start difference. First operand 263 states and 328 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:38:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:35,412 INFO L93 Difference]: Finished difference Result 263 states and 328 transitions. [2021-11-09 08:38:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:38:35,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2021-11-09 08:38:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:35,416 INFO L225 Difference]: With dead ends: 263 [2021-11-09 08:38:35,416 INFO L226 Difference]: Without dead ends: 262 [2021-11-09 08:38:35,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:38:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-09 08:38:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-09 08:38:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 200 states have (on average 1.225) internal successors, (245), 211 states have internal predecessors, (245), 33 states have call successors, (33), 12 states have call predecessors, (33), 15 states have return successors, (47), 38 states have call predecessors, (47), 33 states have call successors, (47) [2021-11-09 08:38:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 325 transitions. [2021-11-09 08:38:35,437 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 325 transitions. Word has length 73 [2021-11-09 08:38:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:35,438 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 325 transitions. [2021-11-09 08:38:35,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:38:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 325 transitions. [2021-11-09 08:38:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 08:38:35,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:35,440 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:35,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:35,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-09 08:38:35,654 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1181156173, now seen corresponding path program 1 times [2021-11-09 08:38:35,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:35,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004684220] [2021-11-09 08:38:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:35,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:35,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:35,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913721625] [2021-11-09 08:38:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:35,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:35,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:35,672 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:35,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 08:38:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:36,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:38:36,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-09 08:38:36,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:36,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004684220] [2021-11-09 08:38:36,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:36,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913721625] [2021-11-09 08:38:36,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913721625] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:36,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:36,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 08:38:36,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182929754] [2021-11-09 08:38:36,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:38:36,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:38:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:36,398 INFO L87 Difference]: Start difference. First operand 262 states and 325 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:38:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:36,535 INFO L93 Difference]: Finished difference Result 282 states and 343 transitions. [2021-11-09 08:38:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:38:36,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2021-11-09 08:38:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:36,539 INFO L225 Difference]: With dead ends: 282 [2021-11-09 08:38:36,539 INFO L226 Difference]: Without dead ends: 280 [2021-11-09 08:38:36,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:38:36,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-09 08:38:36,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 266. [2021-11-09 08:38:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 204 states have (on average 1.2058823529411764) internal successors, (246), 213 states have internal predecessors, (246), 33 states have call successors, (33), 12 states have call predecessors, (33), 15 states have return successors, (47), 40 states have call predecessors, (47), 33 states have call successors, (47) [2021-11-09 08:38:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 326 transitions. [2021-11-09 08:38:36,560 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 326 transitions. Word has length 77 [2021-11-09 08:38:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:36,561 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 326 transitions. [2021-11-09 08:38:36,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:38:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 326 transitions. [2021-11-09 08:38:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 08:38:36,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:36,563 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:36,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:36,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 08:38:36,782 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2038864413, now seen corresponding path program 1 times [2021-11-09 08:38:36,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:36,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128510725] [2021-11-09 08:38:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:36,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:36,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:36,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882948698] [2021-11-09 08:38:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:36,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:36,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:36,798 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:36,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 08:38:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:37,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:38:37,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-09 08:38:37,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:37,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128510725] [2021-11-09 08:38:37,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:37,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882948698] [2021-11-09 08:38:37,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882948698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:37,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:37,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:38:37,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503886278] [2021-11-09 08:38:37,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:38:37,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:38:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:37,667 INFO L87 Difference]: Start difference. First operand 266 states and 326 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-09 08:38:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:37,822 INFO L93 Difference]: Finished difference Result 266 states and 326 transitions. [2021-11-09 08:38:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:38:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2021-11-09 08:38:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:37,826 INFO L225 Difference]: With dead ends: 266 [2021-11-09 08:38:37,826 INFO L226 Difference]: Without dead ends: 264 [2021-11-09 08:38:37,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-09 08:38:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 252. [2021-11-09 08:38:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 192 states have (on average 1.1927083333333333) internal successors, (229), 203 states have internal predecessors, (229), 33 states have call successors, (33), 12 states have call predecessors, (33), 15 states have return successors, (47), 36 states have call predecessors, (47), 33 states have call successors, (47) [2021-11-09 08:38:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 309 transitions. [2021-11-09 08:38:37,855 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 309 transitions. Word has length 78 [2021-11-09 08:38:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:37,855 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 309 transitions. [2021-11-09 08:38:37,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-09 08:38:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 309 transitions. [2021-11-09 08:38:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 08:38:37,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:37,858 INFO L513 BasicCegarLoop]: trace histogram [10, 8, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:37,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:38,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 08:38:38,072 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1808594727, now seen corresponding path program 2 times [2021-11-09 08:38:38,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:38,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436198249] [2021-11-09 08:38:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:38,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:38,083 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:38,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523644250] [2021-11-09 08:38:38,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:38:38,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:38,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:38,085 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:38,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 08:38:38,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:38:38,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:38,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 08:38:38,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-09 08:38:39,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:39,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436198249] [2021-11-09 08:38:39,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:39,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523644250] [2021-11-09 08:38:39,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523644250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:39,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:39,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 08:38:39,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001068425] [2021-11-09 08:38:39,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:38:39,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:38:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:38:39,043 INFO L87 Difference]: Start difference. First operand 252 states and 309 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 08:38:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:39,353 INFO L93 Difference]: Finished difference Result 474 states and 584 transitions. [2021-11-09 08:38:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:38:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 87 [2021-11-09 08:38:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:39,356 INFO L225 Difference]: With dead ends: 474 [2021-11-09 08:38:39,357 INFO L226 Difference]: Without dead ends: 277 [2021-11-09 08:38:39,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:38:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-09 08:38:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 252. [2021-11-09 08:38:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 192 states have (on average 1.1822916666666667) internal successors, (227), 203 states have internal predecessors, (227), 33 states have call successors, (33), 13 states have call predecessors, (33), 15 states have return successors, (46), 35 states have call predecessors, (46), 33 states have call successors, (46) [2021-11-09 08:38:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 306 transitions. [2021-11-09 08:38:39,378 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 306 transitions. Word has length 87 [2021-11-09 08:38:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:39,378 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 306 transitions. [2021-11-09 08:38:39,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 08:38:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 306 transitions. [2021-11-09 08:38:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 08:38:39,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:39,380 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:39,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:39,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 08:38:39,605 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1219712523, now seen corresponding path program 2 times [2021-11-09 08:38:39,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:39,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875862311] [2021-11-09 08:38:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:39,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:39,616 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:39,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584972850] [2021-11-09 08:38:39,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:38:39,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:39,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:39,632 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:39,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 08:38:40,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:38:40,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:40,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 08:38:40,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-09 08:38:40,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:40,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875862311] [2021-11-09 08:38:40,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:40,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584972850] [2021-11-09 08:38:40,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584972850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:40,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:40,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:38:40,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916998965] [2021-11-09 08:38:40,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:38:40,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:38:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:40,728 INFO L87 Difference]: Start difference. First operand 252 states and 306 transitions. Second operand has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 08:38:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:40,870 INFO L93 Difference]: Finished difference Result 252 states and 306 transitions. [2021-11-09 08:38:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:38:40,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 79 [2021-11-09 08:38:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:40,873 INFO L225 Difference]: With dead ends: 252 [2021-11-09 08:38:40,873 INFO L226 Difference]: Without dead ends: 248 [2021-11-09 08:38:40,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:38:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-09 08:38:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 224. [2021-11-09 08:38:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 173 states have (on average 1.1329479768786128) internal successors, (196), 181 states have internal predecessors, (196), 29 states have call successors, (29), 13 states have call predecessors, (29), 14 states have return successors, (39), 29 states have call predecessors, (39), 29 states have call successors, (39) [2021-11-09 08:38:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 264 transitions. [2021-11-09 08:38:40,892 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 264 transitions. Word has length 79 [2021-11-09 08:38:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:40,893 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 264 transitions. [2021-11-09 08:38:40,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-09 08:38:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 264 transitions. [2021-11-09 08:38:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 08:38:40,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:40,895 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:40,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:41,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:41,108 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1937560455, now seen corresponding path program 1 times [2021-11-09 08:38:41,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:41,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612588238] [2021-11-09 08:38:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:41,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:41,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:41,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100031840] [2021-11-09 08:38:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:41,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:41,121 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:41,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 08:38:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:41,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:38:41,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-09 08:38:41,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:41,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612588238] [2021-11-09 08:38:41,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:41,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100031840] [2021-11-09 08:38:41,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100031840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:41,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:41,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 08:38:41,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837422910] [2021-11-09 08:38:41,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:38:41,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:41,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:38:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:38:41,979 INFO L87 Difference]: Start difference. First operand 224 states and 264 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 08:38:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:42,062 INFO L93 Difference]: Finished difference Result 285 states and 339 transitions. [2021-11-09 08:38:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:38:42,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 83 [2021-11-09 08:38:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:42,066 INFO L225 Difference]: With dead ends: 285 [2021-11-09 08:38:42,066 INFO L226 Difference]: Without dead ends: 284 [2021-11-09 08:38:42,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-09 08:38:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 271. [2021-11-09 08:38:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 213 states have (on average 1.136150234741784) internal successors, (242), 217 states have internal predecessors, (242), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (52), 40 states have call predecessors, (52), 36 states have call successors, (52) [2021-11-09 08:38:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 330 transitions. [2021-11-09 08:38:42,089 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 330 transitions. Word has length 83 [2021-11-09 08:38:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:42,089 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 330 transitions. [2021-11-09 08:38:42,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 08:38:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 330 transitions. [2021-11-09 08:38:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 08:38:42,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:42,091 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:42,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:42,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:42,310 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -654322518, now seen corresponding path program 1 times [2021-11-09 08:38:42,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:42,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544942] [2021-11-09 08:38:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:42,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:42,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:42,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92415406] [2021-11-09 08:38:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:42,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:42,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:42,328 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:42,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 08:38:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:42,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 08:38:42,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-09 08:38:43,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:43,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544942] [2021-11-09 08:38:43,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:43,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92415406] [2021-11-09 08:38:43,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92415406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:43,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:43,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:38:43,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305280320] [2021-11-09 08:38:43,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:38:43,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:38:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:38:43,262 INFO L87 Difference]: Start difference. First operand 271 states and 330 transitions. Second operand has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 08:38:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:43,649 INFO L93 Difference]: Finished difference Result 408 states and 494 transitions. [2021-11-09 08:38:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:38:43,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 90 [2021-11-09 08:38:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:43,654 INFO L225 Difference]: With dead ends: 408 [2021-11-09 08:38:43,654 INFO L226 Difference]: Without dead ends: 407 [2021-11-09 08:38:43,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:38:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-09 08:38:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 291. [2021-11-09 08:38:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 228 states have (on average 1.1491228070175439) internal successors, (262), 235 states have internal predecessors, (262), 39 states have call successors, (39), 14 states have call predecessors, (39), 16 states have return successors, (56), 41 states have call predecessors, (56), 39 states have call successors, (56) [2021-11-09 08:38:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 357 transitions. [2021-11-09 08:38:43,680 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 357 transitions. Word has length 90 [2021-11-09 08:38:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:43,681 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 357 transitions. [2021-11-09 08:38:43,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 08:38:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 357 transitions. [2021-11-09 08:38:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 08:38:43,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:43,683 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:43,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:43,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:43,905 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash 361947514, now seen corresponding path program 1 times [2021-11-09 08:38:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:43,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903815567] [2021-11-09 08:38:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:43,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:43,917 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:43,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868928003] [2021-11-09 08:38:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:43,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:43,919 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:43,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 08:38:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:44,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:38:44,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-09 08:38:44,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:44,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903815567] [2021-11-09 08:38:44,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:44,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868928003] [2021-11-09 08:38:44,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868928003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:44,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:44,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 08:38:44,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857094958] [2021-11-09 08:38:44,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:38:44,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:38:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:44,898 INFO L87 Difference]: Start difference. First operand 291 states and 357 transitions. Second operand has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:38:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:45,163 INFO L93 Difference]: Finished difference Result 463 states and 591 transitions. [2021-11-09 08:38:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:38:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 95 [2021-11-09 08:38:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:45,170 INFO L225 Difference]: With dead ends: 463 [2021-11-09 08:38:45,170 INFO L226 Difference]: Without dead ends: 462 [2021-11-09 08:38:45,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:38:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-09 08:38:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 425. [2021-11-09 08:38:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 336 states have (on average 1.1726190476190477) internal successors, (394), 341 states have internal predecessors, (394), 63 states have call successors, (63), 15 states have call predecessors, (63), 18 states have return successors, (96), 68 states have call predecessors, (96), 63 states have call successors, (96) [2021-11-09 08:38:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 553 transitions. [2021-11-09 08:38:45,213 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 553 transitions. Word has length 95 [2021-11-09 08:38:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:45,216 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 553 transitions. [2021-11-09 08:38:45,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:38:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 553 transitions. [2021-11-09 08:38:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-09 08:38:45,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:45,219 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:45,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:45,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:45,434 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:45,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1342238063, now seen corresponding path program 1 times [2021-11-09 08:38:45,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:45,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405678450] [2021-11-09 08:38:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:45,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:45,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:45,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119766589] [2021-11-09 08:38:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:45,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:45,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:45,448 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:45,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 08:38:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:46,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 08:38:46,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 59 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-09 08:38:46,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:46,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405678450] [2021-11-09 08:38:46,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:46,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119766589] [2021-11-09 08:38:46,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119766589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:46,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:46,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-09 08:38:46,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976590760] [2021-11-09 08:38:46,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:38:46,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:38:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:38:46,562 INFO L87 Difference]: Start difference. First operand 425 states and 553 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-09 08:38:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:47,127 INFO L93 Difference]: Finished difference Result 825 states and 1091 transitions. [2021-11-09 08:38:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:38:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 98 [2021-11-09 08:38:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:47,134 INFO L225 Difference]: With dead ends: 825 [2021-11-09 08:38:47,135 INFO L226 Difference]: Without dead ends: 483 [2021-11-09 08:38:47,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:38:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-09 08:38:47,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 455. [2021-11-09 08:38:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 360 states have (on average 1.1722222222222223) internal successors, (422), 365 states have internal predecessors, (422), 66 states have call successors, (66), 18 states have call predecessors, (66), 21 states have return successors, (99), 71 states have call predecessors, (99), 66 states have call successors, (99) [2021-11-09 08:38:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 587 transitions. [2021-11-09 08:38:47,194 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 587 transitions. Word has length 98 [2021-11-09 08:38:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:47,194 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 587 transitions. [2021-11-09 08:38:47,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-09 08:38:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 587 transitions. [2021-11-09 08:38:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 08:38:47,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:47,197 INFO L513 BasicCegarLoop]: trace histogram [11, 9, 7, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:47,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-09 08:38:47,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-09 08:38:47,414 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:47,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 363186361, now seen corresponding path program 2 times [2021-11-09 08:38:47,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:47,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796159474] [2021-11-09 08:38:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:47,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:47,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:47,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012873967] [2021-11-09 08:38:47,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:38:47,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:47,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:47,428 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:47,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 08:38:48,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:38:48,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:48,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-09 08:38:48,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 64 proven. 19 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-09 08:38:48,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:48,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796159474] [2021-11-09 08:38:48,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:48,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012873967] [2021-11-09 08:38:48,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012873967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:48,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:48,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 08:38:48,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349871883] [2021-11-09 08:38:48,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:38:48,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:38:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:38:48,641 INFO L87 Difference]: Start difference. First operand 455 states and 587 transitions. Second operand has 14 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-09 08:38:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:49,186 INFO L93 Difference]: Finished difference Result 623 states and 797 transitions. [2021-11-09 08:38:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 08:38:49,187 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 103 [2021-11-09 08:38:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:49,193 INFO L225 Difference]: With dead ends: 623 [2021-11-09 08:38:49,193 INFO L226 Difference]: Without dead ends: 620 [2021-11-09 08:38:49,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:38:49,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-09 08:38:49,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 467. [2021-11-09 08:38:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 370 states have (on average 1.1702702702702703) internal successors, (433), 374 states have internal predecessors, (433), 67 states have call successors, (67), 19 states have call predecessors, (67), 22 states have return successors, (101), 73 states have call predecessors, (101), 67 states have call successors, (101) [2021-11-09 08:38:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 601 transitions. [2021-11-09 08:38:49,258 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 601 transitions. Word has length 103 [2021-11-09 08:38:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:49,259 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 601 transitions. [2021-11-09 08:38:49,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-09 08:38:49,260 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 601 transitions. [2021-11-09 08:38:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 08:38:49,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:49,263 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:49,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:49,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-09 08:38:49,490 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 63749809, now seen corresponding path program 1 times [2021-11-09 08:38:49,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:49,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271374863] [2021-11-09 08:38:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:49,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:49,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:49,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441283209] [2021-11-09 08:38:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:49,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:49,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:49,507 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:49,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 08:38:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:38:50,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:38:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-09 08:38:50,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:50,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271374863] [2021-11-09 08:38:50,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:50,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441283209] [2021-11-09 08:38:50,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441283209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:50,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:50,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:38:50,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486028628] [2021-11-09 08:38:50,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:38:50,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:50,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:38:50,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:38:50,593 INFO L87 Difference]: Start difference. First operand 467 states and 601 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-09 08:38:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:50,725 INFO L93 Difference]: Finished difference Result 777 states and 1015 transitions. [2021-11-09 08:38:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:38:50,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2021-11-09 08:38:50,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:50,732 INFO L225 Difference]: With dead ends: 777 [2021-11-09 08:38:50,733 INFO L226 Difference]: Without dead ends: 434 [2021-11-09 08:38:50,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:38:50,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-09 08:38:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2021-11-09 08:38:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 342 states have (on average 1.1666666666666667) internal successors, (399), 346 states have internal predecessors, (399), 60 states have call successors, (60), 18 states have call predecessors, (60), 21 states have return successors, (92), 66 states have call predecessors, (92), 60 states have call successors, (92) [2021-11-09 08:38:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 551 transitions. [2021-11-09 08:38:50,797 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 551 transitions. Word has length 103 [2021-11-09 08:38:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:50,798 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 551 transitions. [2021-11-09 08:38:50,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-09 08:38:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 551 transitions. [2021-11-09 08:38:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 08:38:50,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:50,800 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:50,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:51,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 08:38:51,018 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:51,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1449152353, now seen corresponding path program 2 times [2021-11-09 08:38:51,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:51,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389535733] [2021-11-09 08:38:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:51,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:51,030 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:51,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022057988] [2021-11-09 08:38:51,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:38:51,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:51,037 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:51,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 08:38:51,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:38:51,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:51,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 08:38:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-11-09 08:38:52,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:52,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389535733] [2021-11-09 08:38:52,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:52,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022057988] [2021-11-09 08:38:52,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022057988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:52,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:52,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:38:52,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2769296] [2021-11-09 08:38:52,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:38:52,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:52,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:38:52,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:38:52,224 INFO L87 Difference]: Start difference. First operand 431 states and 551 transitions. Second operand has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-09 08:38:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:52,559 INFO L93 Difference]: Finished difference Result 795 states and 1026 transitions. [2021-11-09 08:38:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:38:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2021-11-09 08:38:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:52,564 INFO L225 Difference]: With dead ends: 795 [2021-11-09 08:38:52,565 INFO L226 Difference]: Without dead ends: 476 [2021-11-09 08:38:52,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:38:52,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-09 08:38:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 443. [2021-11-09 08:38:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 352 states have (on average 1.1647727272727273) internal successors, (410), 355 states have internal predecessors, (410), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (93), 68 states have call predecessors, (93), 61 states have call successors, (93) [2021-11-09 08:38:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 564 transitions. [2021-11-09 08:38:52,615 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 564 transitions. Word has length 103 [2021-11-09 08:38:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:52,615 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 564 transitions. [2021-11-09 08:38:52,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-09 08:38:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 564 transitions. [2021-11-09 08:38:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 08:38:52,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:52,618 INFO L513 BasicCegarLoop]: trace histogram [12, 9, 7, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:52,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:52,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-09 08:38:52,842 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash 503491473, now seen corresponding path program 3 times [2021-11-09 08:38:52,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:52,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046344430] [2021-11-09 08:38:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:52,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:52,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:52,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246710693] [2021-11-09 08:38:52,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:38:52,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:52,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:52,857 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:52,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 08:38:53,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 08:38:53,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:53,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:38:53,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-09 08:38:54,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:54,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046344430] [2021-11-09 08:38:54,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:54,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246710693] [2021-11-09 08:38:54,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246710693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:38:54,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:38:54,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:38:54,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841712684] [2021-11-09 08:38:54,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:38:54,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:38:54,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:38:54,021 INFO L87 Difference]: Start difference. First operand 443 states and 564 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-09 08:38:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:54,157 INFO L93 Difference]: Finished difference Result 455 states and 578 transitions. [2021-11-09 08:38:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:38:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 108 [2021-11-09 08:38:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:54,163 INFO L225 Difference]: With dead ends: 455 [2021-11-09 08:38:54,163 INFO L226 Difference]: Without dead ends: 454 [2021-11-09 08:38:54,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:38:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-09 08:38:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 449. [2021-11-09 08:38:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 358 states have (on average 1.1620111731843576) internal successors, (416), 358 states have internal predecessors, (416), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (93), 71 states have call predecessors, (93), 61 states have call successors, (93) [2021-11-09 08:38:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 570 transitions. [2021-11-09 08:38:54,201 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 570 transitions. Word has length 108 [2021-11-09 08:38:54,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:54,226 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 570 transitions. [2021-11-09 08:38:54,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-09 08:38:54,226 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 570 transitions. [2021-11-09 08:38:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 08:38:54,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:54,229 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:54,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:54,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-09 08:38:54,430 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:54,431 INFO L85 PathProgramCache]: Analyzing trace with hash 820662419, now seen corresponding path program 4 times [2021-11-09 08:38:54,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:54,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147680661] [2021-11-09 08:38:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:54,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:54,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:54,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894986727] [2021-11-09 08:38:54,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:38:54,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:54,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:54,454 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:54,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-09 08:38:55,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:38:55,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:38:55,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-09 08:38:55,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:38:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 85 proven. 74 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-09 08:38:56,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:38:56,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147680661] [2021-11-09 08:38:56,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:38:56,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894986727] [2021-11-09 08:38:56,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894986727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:38:56,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:38:56,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-09 08:38:56,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275521631] [2021-11-09 08:38:56,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 08:38:56,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:38:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 08:38:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:38:56,214 INFO L87 Difference]: Start difference. First operand 449 states and 570 transitions. Second operand has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 20 states have internal predecessors, (71), 8 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-09 08:38:59,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:38:59,545 INFO L93 Difference]: Finished difference Result 1115 states and 1571 transitions. [2021-11-09 08:38:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 08:38:59,546 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 20 states have internal predecessors, (71), 8 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 108 [2021-11-09 08:38:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:38:59,558 INFO L225 Difference]: With dead ends: 1115 [2021-11-09 08:38:59,558 INFO L226 Difference]: Without dead ends: 749 [2021-11-09 08:38:59,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 08:38:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-09 08:38:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 531. [2021-11-09 08:38:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 425 states have (on average 1.1388235294117648) internal successors, (484), 423 states have internal predecessors, (484), 69 states have call successors, (69), 26 states have call predecessors, (69), 29 states have return successors, (175), 81 states have call predecessors, (175), 69 states have call successors, (175) [2021-11-09 08:38:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 728 transitions. [2021-11-09 08:38:59,621 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 728 transitions. Word has length 108 [2021-11-09 08:38:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:38:59,622 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 728 transitions. [2021-11-09 08:38:59,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 20 states have internal predecessors, (71), 8 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-09 08:38:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 728 transitions. [2021-11-09 08:38:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 08:38:59,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:59,625 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:38:59,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-09 08:38:59,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-09 08:38:59,846 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:38:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 256525554, now seen corresponding path program 1 times [2021-11-09 08:38:59,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:59,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150676202] [2021-11-09 08:38:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:59,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:59,868 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:38:59,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171639994] [2021-11-09 08:38:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:59,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:38:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:59,870 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:38:59,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-09 08:39:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:00,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:39:00,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-09 08:39:01,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:01,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150676202] [2021-11-09 08:39:01,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:01,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171639994] [2021-11-09 08:39:01,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171639994] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:01,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:01,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 08:39:01,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784232782] [2021-11-09 08:39:01,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:39:01,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:39:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:39:01,281 INFO L87 Difference]: Start difference. First operand 531 states and 728 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:01,522 INFO L93 Difference]: Finished difference Result 550 states and 739 transitions. [2021-11-09 08:39:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:39:01,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 114 [2021-11-09 08:39:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:01,532 INFO L225 Difference]: With dead ends: 550 [2021-11-09 08:39:01,532 INFO L226 Difference]: Without dead ends: 549 [2021-11-09 08:39:01,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:39:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-09 08:39:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 531. [2021-11-09 08:39:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 425 states have (on average 1.1364705882352941) internal successors, (483), 423 states have internal predecessors, (483), 69 states have call successors, (69), 26 states have call predecessors, (69), 29 states have return successors, (175), 81 states have call predecessors, (175), 69 states have call successors, (175) [2021-11-09 08:39:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 727 transitions. [2021-11-09 08:39:01,603 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 727 transitions. Word has length 114 [2021-11-09 08:39:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:01,604 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 727 transitions. [2021-11-09 08:39:01,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:01,605 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 727 transitions. [2021-11-09 08:39:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 08:39:01,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:01,607 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:01,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:01,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-09 08:39:01,825 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:01,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:01,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1705598222, now seen corresponding path program 2 times [2021-11-09 08:39:01,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:01,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165376811] [2021-11-09 08:39:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:01,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:01,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:01,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198138208] [2021-11-09 08:39:01,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:39:01,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:01,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:01,851 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:01,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-09 08:39:02,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:39:02,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:02,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 08:39:02,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-09 08:39:03,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:03,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165376811] [2021-11-09 08:39:03,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:03,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198138208] [2021-11-09 08:39:03,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198138208] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:03,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:03,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 08:39:03,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448795661] [2021-11-09 08:39:03,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:39:03,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:39:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:39:03,300 INFO L87 Difference]: Start difference. First operand 531 states and 727 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:03,645 INFO L93 Difference]: Finished difference Result 604 states and 799 transitions. [2021-11-09 08:39:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:39:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 119 [2021-11-09 08:39:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:03,651 INFO L225 Difference]: With dead ends: 604 [2021-11-09 08:39:03,652 INFO L226 Difference]: Without dead ends: 603 [2021-11-09 08:39:03,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:39:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-09 08:39:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 581. [2021-11-09 08:39:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 465 states have (on average 1.135483870967742) internal successors, (528), 462 states have internal predecessors, (528), 72 states have call successors, (72), 29 states have call predecessors, (72), 36 states have return successors, (183), 89 states have call predecessors, (183), 72 states have call successors, (183) [2021-11-09 08:39:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 783 transitions. [2021-11-09 08:39:03,704 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 783 transitions. Word has length 119 [2021-11-09 08:39:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:03,705 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 783 transitions. [2021-11-09 08:39:03,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 783 transitions. [2021-11-09 08:39:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-09 08:39:03,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:03,707 INFO L513 BasicCegarLoop]: trace histogram [14, 11, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:03,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:03,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:03,922 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:03,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1785978785, now seen corresponding path program 3 times [2021-11-09 08:39:03,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:03,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306129770] [2021-11-09 08:39:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:03,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:03,934 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:03,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826426699] [2021-11-09 08:39:03,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:39:03,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:03,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:03,936 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:03,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-09 08:39:04,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 08:39:04,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:04,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-09 08:39:04,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 127 proven. 18 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-09 08:39:05,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:05,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306129770] [2021-11-09 08:39:05,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:05,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826426699] [2021-11-09 08:39:05,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826426699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:05,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:05,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 08:39:05,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396293121] [2021-11-09 08:39:05,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:39:05,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:39:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:39:05,746 INFO L87 Difference]: Start difference. First operand 581 states and 783 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-09 08:39:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:06,212 INFO L93 Difference]: Finished difference Result 649 states and 866 transitions. [2021-11-09 08:39:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:39:06,213 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 133 [2021-11-09 08:39:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:06,220 INFO L225 Difference]: With dead ends: 649 [2021-11-09 08:39:06,220 INFO L226 Difference]: Without dead ends: 648 [2021-11-09 08:39:06,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:39:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-09 08:39:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 612. [2021-11-09 08:39:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 491 states have (on average 1.1283095723014256) internal successors, (554), 485 states have internal predecessors, (554), 72 states have call successors, (72), 29 states have call predecessors, (72), 41 states have return successors, (193), 97 states have call predecessors, (193), 72 states have call successors, (193) [2021-11-09 08:39:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 819 transitions. [2021-11-09 08:39:06,271 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 819 transitions. Word has length 133 [2021-11-09 08:39:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:06,272 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 819 transitions. [2021-11-09 08:39:06,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-09 08:39:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 819 transitions. [2021-11-09 08:39:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-09 08:39:06,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:06,274 INFO L513 BasicCegarLoop]: trace histogram [15, 12, 8, 8, 8, 8, 7, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:06,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:06,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-09 08:39:06,510 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:06,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1794228003, now seen corresponding path program 4 times [2021-11-09 08:39:06,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:06,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188339096] [2021-11-09 08:39:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:06,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:06,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:06,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880790370] [2021-11-09 08:39:06,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:39:06,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:06,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:06,530 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:06,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-09 08:39:07,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:39:07,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:07,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 08:39:07,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 198 proven. 144 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-09 08:39:08,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:08,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188339096] [2021-11-09 08:39:08,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:08,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880790370] [2021-11-09 08:39:08,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880790370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:08,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:08,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-09 08:39:08,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694266798] [2021-11-09 08:39:08,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 08:39:08,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 08:39:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:39:08,177 INFO L87 Difference]: Start difference. First operand 612 states and 819 transitions. Second operand has 20 states, 18 states have (on average 5.111111111111111) internal successors, (92), 19 states have internal predecessors, (92), 10 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-09 08:39:10,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:10,022 INFO L93 Difference]: Finished difference Result 1545 states and 2214 transitions. [2021-11-09 08:39:10,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 08:39:10,023 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.111111111111111) internal successors, (92), 19 states have internal predecessors, (92), 10 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 143 [2021-11-09 08:39:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:10,033 INFO L225 Difference]: With dead ends: 1545 [2021-11-09 08:39:10,034 INFO L226 Difference]: Without dead ends: 1072 [2021-11-09 08:39:10,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=293, Invalid=1777, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 08:39:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-09 08:39:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 786. [2021-11-09 08:39:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 639 states have (on average 1.1392801251956182) internal successors, (728), 626 states have internal predecessors, (728), 96 states have call successors, (96), 34 states have call predecessors, (96), 43 states have return successors, (264), 125 states have call predecessors, (264), 96 states have call successors, (264) [2021-11-09 08:39:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1088 transitions. [2021-11-09 08:39:10,136 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1088 transitions. Word has length 143 [2021-11-09 08:39:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:10,141 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1088 transitions. [2021-11-09 08:39:10,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.111111111111111) internal successors, (92), 19 states have internal predecessors, (92), 10 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-09 08:39:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1088 transitions. [2021-11-09 08:39:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-09 08:39:10,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:10,143 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:10,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:10,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-09 08:39:10,358 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1421859830, now seen corresponding path program 1 times [2021-11-09 08:39:10,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:10,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297153173] [2021-11-09 08:39:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:10,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:10,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:10,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455947862] [2021-11-09 08:39:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:10,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:10,376 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:10,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-09 08:39:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:11,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 08:39:11,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 57 proven. 7 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-09 08:39:12,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:12,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297153173] [2021-11-09 08:39:12,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:12,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455947862] [2021-11-09 08:39:12,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455947862] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:12,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:12,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:39:12,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935428745] [2021-11-09 08:39:12,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:39:12,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:39:12,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:39:12,031 INFO L87 Difference]: Start difference. First operand 786 states and 1088 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-09 08:39:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:12,407 INFO L93 Difference]: Finished difference Result 1337 states and 1898 transitions. [2021-11-09 08:39:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:39:12,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 132 [2021-11-09 08:39:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:12,416 INFO L225 Difference]: With dead ends: 1337 [2021-11-09 08:39:12,417 INFO L226 Difference]: Without dead ends: 796 [2021-11-09 08:39:12,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:39:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-11-09 08:39:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 786. [2021-11-09 08:39:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 639 states have (on average 1.1392801251956182) internal successors, (728), 626 states have internal predecessors, (728), 96 states have call successors, (96), 34 states have call predecessors, (96), 43 states have return successors, (258), 125 states have call predecessors, (258), 96 states have call successors, (258) [2021-11-09 08:39:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1082 transitions. [2021-11-09 08:39:12,494 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1082 transitions. Word has length 132 [2021-11-09 08:39:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:12,495 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1082 transitions. [2021-11-09 08:39:12,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-09 08:39:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1082 transitions. [2021-11-09 08:39:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-09 08:39:12,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:12,497 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:12,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:12,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-09 08:39:12,726 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1308364916, now seen corresponding path program 2 times [2021-11-09 08:39:12,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:12,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709620598] [2021-11-09 08:39:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:12,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:12,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:12,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383842893] [2021-11-09 08:39:12,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:39:12,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:12,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:12,745 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:12,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-09 08:39:13,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:39:13,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:13,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:39:13,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-11-09 08:39:14,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:14,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709620598] [2021-11-09 08:39:14,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:14,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383842893] [2021-11-09 08:39:14,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383842893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:14,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:14,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:39:14,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636813163] [2021-11-09 08:39:14,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:39:14,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:39:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:39:14,313 INFO L87 Difference]: Start difference. First operand 786 states and 1082 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-09 08:39:14,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:14,746 INFO L93 Difference]: Finished difference Result 1211 states and 1781 transitions. [2021-11-09 08:39:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 08:39:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 142 [2021-11-09 08:39:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:14,759 INFO L225 Difference]: With dead ends: 1211 [2021-11-09 08:39:14,759 INFO L226 Difference]: Without dead ends: 1209 [2021-11-09 08:39:14,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-11-09 08:39:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-11-09 08:39:14,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1050. [2021-11-09 08:39:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 859 states have (on average 1.161816065192084) internal successors, (998), 837 states have internal predecessors, (998), 140 states have call successors, (140), 34 states have call predecessors, (140), 43 states have return successors, (406), 178 states have call predecessors, (406), 140 states have call successors, (406) [2021-11-09 08:39:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1544 transitions. [2021-11-09 08:39:14,893 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1544 transitions. Word has length 142 [2021-11-09 08:39:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:14,893 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1544 transitions. [2021-11-09 08:39:14,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-09 08:39:14,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1544 transitions. [2021-11-09 08:39:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-09 08:39:14,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:14,896 INFO L513 BasicCegarLoop]: trace histogram [17, 15, 9, 8, 8, 8, 8, 7, 7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:14,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:15,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-09 08:39:15,112 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1661120973, now seen corresponding path program 5 times [2021-11-09 08:39:15,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:15,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40890923] [2021-11-09 08:39:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:15,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:15,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:15,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204050050] [2021-11-09 08:39:15,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:39:15,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:15,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:15,137 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:15,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-09 08:39:16,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-09 08:39:16,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:16,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 08:39:16,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 253 proven. 56 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2021-11-09 08:39:17,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:17,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40890923] [2021-11-09 08:39:17,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:17,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204050050] [2021-11-09 08:39:17,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204050050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:17,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:17,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 08:39:17,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193305107] [2021-11-09 08:39:17,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:39:17,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:17,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:39:17,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:39:17,031 INFO L87 Difference]: Start difference. First operand 1050 states and 1544 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 13 states have internal predecessors, (79), 7 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-09 08:39:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:17,793 INFO L93 Difference]: Finished difference Result 2013 states and 3035 transitions. [2021-11-09 08:39:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 08:39:17,794 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 13 states have internal predecessors, (79), 7 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 162 [2021-11-09 08:39:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:17,804 INFO L225 Difference]: With dead ends: 2013 [2021-11-09 08:39:17,805 INFO L226 Difference]: Without dead ends: 1145 [2021-11-09 08:39:17,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2021-11-09 08:39:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-09 08:39:17,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1006. [2021-11-09 08:39:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 823 states have (on average 1.1628189550425274) internal successors, (957), 803 states have internal predecessors, (957), 138 states have call successors, (138), 33 states have call predecessors, (138), 37 states have return successors, (390), 169 states have call predecessors, (390), 138 states have call successors, (390) [2021-11-09 08:39:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1485 transitions. [2021-11-09 08:39:17,914 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1485 transitions. Word has length 162 [2021-11-09 08:39:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:17,915 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1485 transitions. [2021-11-09 08:39:17,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 13 states have internal predecessors, (79), 7 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-09 08:39:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1485 transitions. [2021-11-09 08:39:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-09 08:39:17,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:17,917 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:17,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:18,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:18,134 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 454563133, now seen corresponding path program 2 times [2021-11-09 08:39:18,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:18,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336642556] [2021-11-09 08:39:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:18,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:18,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:18,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192558865] [2021-11-09 08:39:18,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:39:18,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:18,155 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:18,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-09 08:39:19,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:39:19,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:19,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:39:19,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2021-11-09 08:39:19,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:19,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336642556] [2021-11-09 08:39:19,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:19,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192558865] [2021-11-09 08:39:19,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192558865] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:19,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:19,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 08:39:19,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117157630] [2021-11-09 08:39:19,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:39:19,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:39:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:39:19,922 INFO L87 Difference]: Start difference. First operand 1006 states and 1485 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-09 08:39:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:20,072 INFO L93 Difference]: Finished difference Result 1211 states and 1812 transitions. [2021-11-09 08:39:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:39:20,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 153 [2021-11-09 08:39:20,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:20,084 INFO L225 Difference]: With dead ends: 1211 [2021-11-09 08:39:20,084 INFO L226 Difference]: Without dead ends: 1210 [2021-11-09 08:39:20,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:39:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-09 08:39:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1122. [2021-11-09 08:39:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 920 states have (on average 1.1619565217391303) internal successors, (1069), 891 states have internal predecessors, (1069), 157 states have call successors, (157), 33 states have call predecessors, (157), 37 states have return successors, (455), 197 states have call predecessors, (455), 157 states have call successors, (455) [2021-11-09 08:39:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1681 transitions. [2021-11-09 08:39:20,229 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1681 transitions. Word has length 153 [2021-11-09 08:39:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:20,230 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1681 transitions. [2021-11-09 08:39:20,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-09 08:39:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1681 transitions. [2021-11-09 08:39:20,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-09 08:39:20,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:20,233 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 9, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:20,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:20,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-09 08:39:20,455 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash 352077670, now seen corresponding path program 2 times [2021-11-09 08:39:20,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:20,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448481749] [2021-11-09 08:39:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:20,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:20,479 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:20,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067492849] [2021-11-09 08:39:20,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:39:20,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:20,481 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:20,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-09 08:39:21,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 08:39:21,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:21,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:39:21,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2021-11-09 08:39:22,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:22,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448481749] [2021-11-09 08:39:22,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:22,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067492849] [2021-11-09 08:39:22,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067492849] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:22,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:22,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 08:39:22,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622662295] [2021-11-09 08:39:22,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:39:22,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:39:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:39:22,113 INFO L87 Difference]: Start difference. First operand 1122 states and 1681 transitions. Second operand has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:39:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:22,360 INFO L93 Difference]: Finished difference Result 1213 states and 1786 transitions. [2021-11-09 08:39:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:39:22,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 160 [2021-11-09 08:39:22,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:22,373 INFO L225 Difference]: With dead ends: 1213 [2021-11-09 08:39:22,374 INFO L226 Difference]: Without dead ends: 1212 [2021-11-09 08:39:22,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:39:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-09 08:39:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1165. [2021-11-09 08:39:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 955 states have (on average 1.1591623036649215) internal successors, (1107), 924 states have internal predecessors, (1107), 160 states have call successors, (160), 37 states have call predecessors, (160), 42 states have return successors, (459), 203 states have call predecessors, (459), 160 states have call successors, (459) [2021-11-09 08:39:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1726 transitions. [2021-11-09 08:39:22,500 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1726 transitions. Word has length 160 [2021-11-09 08:39:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:22,501 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1726 transitions. [2021-11-09 08:39:22,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:39:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1726 transitions. [2021-11-09 08:39:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-09 08:39:22,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:22,504 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 10, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:22,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:22,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-09 08:39:22,710 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash -353642743, now seen corresponding path program 3 times [2021-11-09 08:39:22,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:22,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963434215] [2021-11-09 08:39:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:22,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:22,724 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:22,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442543029] [2021-11-09 08:39:22,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:39:22,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:22,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:22,726 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:22,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-09 08:39:24,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 08:39:24,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:24,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:39:24,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-11-09 08:39:24,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:24,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963434215] [2021-11-09 08:39:24,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:24,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442543029] [2021-11-09 08:39:24,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442543029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:24,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:24,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 08:39:24,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775309328] [2021-11-09 08:39:24,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:39:24,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:39:24,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:39:24,611 INFO L87 Difference]: Start difference. First operand 1165 states and 1726 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:39:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:24,858 INFO L93 Difference]: Finished difference Result 1777 states and 2663 transitions. [2021-11-09 08:39:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:39:24,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 161 [2021-11-09 08:39:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:24,870 INFO L225 Difference]: With dead ends: 1777 [2021-11-09 08:39:24,870 INFO L226 Difference]: Without dead ends: 1096 [2021-11-09 08:39:24,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:39:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-09 08:39:25,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1084. [2021-11-09 08:39:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 889 states have (on average 1.1529808773903263) internal successors, (1025), 861 states have internal predecessors, (1025), 147 states have call successors, (147), 35 states have call predecessors, (147), 40 states have return successors, (419), 187 states have call predecessors, (419), 147 states have call successors, (419) [2021-11-09 08:39:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1591 transitions. [2021-11-09 08:39:25,024 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1591 transitions. Word has length 161 [2021-11-09 08:39:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:25,024 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1591 transitions. [2021-11-09 08:39:25,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:39:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1591 transitions. [2021-11-09 08:39:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-09 08:39:25,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:25,027 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 10, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:25,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:25,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:25,242 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:25,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1552278703, now seen corresponding path program 4 times [2021-11-09 08:39:25,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:25,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212613254] [2021-11-09 08:39:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:25,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:25,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:25,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806223457] [2021-11-09 08:39:25,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:39:25,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:25,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:25,264 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:25,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-09 08:39:26,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:39:26,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:26,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 08:39:26,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-11-09 08:39:27,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:27,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212613254] [2021-11-09 08:39:27,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:27,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806223457] [2021-11-09 08:39:27,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806223457] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:27,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:27,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 08:39:27,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307502787] [2021-11-09 08:39:27,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:39:27,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:39:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:39:27,347 INFO L87 Difference]: Start difference. First operand 1084 states and 1591 transitions. Second operand has 7 states, 5 states have (on average 11.2) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:27,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:27,611 INFO L93 Difference]: Finished difference Result 1089 states and 1597 transitions. [2021-11-09 08:39:27,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:39:27,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.2) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 161 [2021-11-09 08:39:27,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:27,623 INFO L225 Difference]: With dead ends: 1089 [2021-11-09 08:39:27,624 INFO L226 Difference]: Without dead ends: 1088 [2021-11-09 08:39:27,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:39:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-09 08:39:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1087. [2021-11-09 08:39:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 892 states have (on average 1.1535874439461884) internal successors, (1029), 863 states have internal predecessors, (1029), 147 states have call successors, (147), 36 states have call predecessors, (147), 40 states have return successors, (419), 187 states have call predecessors, (419), 147 states have call successors, (419) [2021-11-09 08:39:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1595 transitions. [2021-11-09 08:39:27,762 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1595 transitions. Word has length 161 [2021-11-09 08:39:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:27,762 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 1595 transitions. [2021-11-09 08:39:27,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.2) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1595 transitions. [2021-11-09 08:39:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-09 08:39:27,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:27,766 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:27,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:27,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-09 08:39:27,994 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 21449624, now seen corresponding path program 2 times [2021-11-09 08:39:27,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:27,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75482424] [2021-11-09 08:39:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:27,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:28,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:28,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968670610] [2021-11-09 08:39:28,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:39:28,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:28,021 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:28,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-09 08:39:29,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:39:29,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:29,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 08:39:29,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2021-11-09 08:39:30,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:30,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75482424] [2021-11-09 08:39:30,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:30,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968670610] [2021-11-09 08:39:30,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968670610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:30,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:30,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 08:39:30,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288789558] [2021-11-09 08:39:30,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:39:30,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:39:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:39:30,221 INFO L87 Difference]: Start difference. First operand 1087 states and 1595 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:39:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:30,548 INFO L93 Difference]: Finished difference Result 1202 states and 1760 transitions. [2021-11-09 08:39:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:39:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 164 [2021-11-09 08:39:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:30,560 INFO L225 Difference]: With dead ends: 1202 [2021-11-09 08:39:30,560 INFO L226 Difference]: Without dead ends: 1201 [2021-11-09 08:39:30,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:39:30,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-11-09 08:39:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1093. [2021-11-09 08:39:30,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 897 states have (on average 1.1415830546265329) internal successors, (1024), 866 states have internal predecessors, (1024), 148 states have call successors, (148), 36 states have call predecessors, (148), 40 states have return successors, (423), 190 states have call predecessors, (423), 148 states have call successors, (423) [2021-11-09 08:39:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1595 transitions. [2021-11-09 08:39:30,699 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1595 transitions. Word has length 164 [2021-11-09 08:39:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:30,700 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 1595 transitions. [2021-11-09 08:39:30,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:39:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1595 transitions. [2021-11-09 08:39:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 08:39:30,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:30,703 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:30,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:30,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-11-09 08:39:30,928 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2079777324, now seen corresponding path program 3 times [2021-11-09 08:39:30,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:30,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694759274] [2021-11-09 08:39:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:30,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:30,950 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:30,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086105288] [2021-11-09 08:39:30,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:39:30,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:30,952 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:30,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-09 08:39:32,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-09 08:39:32,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:32,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:39:32,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-11-09 08:39:32,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:32,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694759274] [2021-11-09 08:39:32,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:32,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086105288] [2021-11-09 08:39:32,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086105288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:32,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:32,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 08:39:32,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434889895] [2021-11-09 08:39:32,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:39:32,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:39:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:39:32,989 INFO L87 Difference]: Start difference. First operand 1093 states and 1595 transitions. Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:33,124 INFO L93 Difference]: Finished difference Result 1103 states and 1604 transitions. [2021-11-09 08:39:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:39:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 169 [2021-11-09 08:39:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:33,134 INFO L225 Difference]: With dead ends: 1103 [2021-11-09 08:39:33,135 INFO L226 Difference]: Without dead ends: 1102 [2021-11-09 08:39:33,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:39:33,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-09 08:39:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1093. [2021-11-09 08:39:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 897 states have (on average 1.1382385730211817) internal successors, (1021), 866 states have internal predecessors, (1021), 148 states have call successors, (148), 36 states have call predecessors, (148), 40 states have return successors, (423), 190 states have call predecessors, (423), 148 states have call successors, (423) [2021-11-09 08:39:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1592 transitions. [2021-11-09 08:39:33,243 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1592 transitions. Word has length 169 [2021-11-09 08:39:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:33,244 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 1592 transitions. [2021-11-09 08:39:33,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:39:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1592 transitions. [2021-11-09 08:39:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 08:39:33,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:33,247 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 11, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:33,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:33,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-09 08:39:33,466 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1227762676, now seen corresponding path program 5 times [2021-11-09 08:39:33,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:33,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128850802] [2021-11-09 08:39:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:33,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:33,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:33,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153228578] [2021-11-09 08:39:33,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:39:33,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:33,530 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:33,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-09 08:39:35,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-09 08:39:35,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:35,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:39:35,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-09 08:39:35,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:35,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128850802] [2021-11-09 08:39:35,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:35,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153228578] [2021-11-09 08:39:35,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153228578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:39:35,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:39:35,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:39:35,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805957333] [2021-11-09 08:39:35,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:39:35,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:39:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:39:35,668 INFO L87 Difference]: Start difference. First operand 1093 states and 1592 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-09 08:39:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:35,880 INFO L93 Difference]: Finished difference Result 1127 states and 1629 transitions. [2021-11-09 08:39:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:39:35,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 169 [2021-11-09 08:39:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:35,891 INFO L225 Difference]: With dead ends: 1127 [2021-11-09 08:39:35,892 INFO L226 Difference]: Without dead ends: 1126 [2021-11-09 08:39:35,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:39:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-09 08:39:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1122. [2021-11-09 08:39:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 920 states have (on average 1.1369565217391304) internal successors, (1046), 889 states have internal predecessors, (1046), 150 states have call successors, (150), 38 states have call predecessors, (150), 44 states have return successors, (428), 194 states have call predecessors, (428), 150 states have call successors, (428) [2021-11-09 08:39:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1624 transitions. [2021-11-09 08:39:36,042 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1624 transitions. Word has length 169 [2021-11-09 08:39:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:36,044 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1624 transitions. [2021-11-09 08:39:36,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-09 08:39:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1624 transitions. [2021-11-09 08:39:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-09 08:39:36,049 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:36,049 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:36,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:36,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:36,266 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2072575903, now seen corresponding path program 1 times [2021-11-09 08:39:36,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:36,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329165331] [2021-11-09 08:39:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:36,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:36,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:36,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768557104] [2021-11-09 08:39:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:36,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:36,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:36,291 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:36,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-09 08:39:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:38,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:39:38,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-09 08:39:39,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:39,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329165331] [2021-11-09 08:39:39,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:39,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768557104] [2021-11-09 08:39:39,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768557104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:39:39,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:39:39,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:39:39,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722681067] [2021-11-09 08:39:39,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:39:39,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:39:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:39:39,251 INFO L87 Difference]: Start difference. First operand 1122 states and 1624 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-09 08:39:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:39,414 INFO L93 Difference]: Finished difference Result 1292 states and 1816 transitions. [2021-11-09 08:39:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:39:39,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 182 [2021-11-09 08:39:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:39,421 INFO L225 Difference]: With dead ends: 1292 [2021-11-09 08:39:39,422 INFO L226 Difference]: Without dead ends: 1290 [2021-11-09 08:39:39,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:39:39,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-11-09 08:39:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1122. [2021-11-09 08:39:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 920 states have (on average 1.1369565217391304) internal successors, (1046), 889 states have internal predecessors, (1046), 150 states have call successors, (150), 38 states have call predecessors, (150), 44 states have return successors, (428), 194 states have call predecessors, (428), 150 states have call successors, (428) [2021-11-09 08:39:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1624 transitions. [2021-11-09 08:39:39,532 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1624 transitions. Word has length 182 [2021-11-09 08:39:39,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:39,533 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1624 transitions. [2021-11-09 08:39:39,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-09 08:39:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1624 transitions. [2021-11-09 08:39:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-09 08:39:39,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:39,536 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 11, 9, 9, 9, 9, 9, 9, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:39,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-11-09 08:39:39,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:39,750 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash -228156008, now seen corresponding path program 6 times [2021-11-09 08:39:39,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:39,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746556767] [2021-11-09 08:39:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:39,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:39,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:39,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681444681] [2021-11-09 08:39:39,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:39:39,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:39,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:39,769 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:39,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-09 08:39:41,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-09 08:39:41,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:41,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 08:39:41,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 93 proven. 22 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-09 08:39:42,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:42,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746556767] [2021-11-09 08:39:42,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:42,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681444681] [2021-11-09 08:39:42,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681444681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:42,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:42,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:39:42,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881015905] [2021-11-09 08:39:42,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:39:42,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:39:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:39:42,231 INFO L87 Difference]: Start difference. First operand 1122 states and 1624 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:39:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:42,502 INFO L93 Difference]: Finished difference Result 1167 states and 1666 transitions. [2021-11-09 08:39:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:39:42,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 199 [2021-11-09 08:39:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:42,508 INFO L225 Difference]: With dead ends: 1167 [2021-11-09 08:39:42,508 INFO L226 Difference]: Without dead ends: 1166 [2021-11-09 08:39:42,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:39:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-11-09 08:39:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1138. [2021-11-09 08:39:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 932 states have (on average 1.136266094420601) internal successors, (1059), 902 states have internal predecessors, (1059), 151 states have call successors, (151), 40 states have call predecessors, (151), 47 states have return successors, (414), 195 states have call predecessors, (414), 151 states have call successors, (414) [2021-11-09 08:39:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1624 transitions. [2021-11-09 08:39:42,605 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1624 transitions. Word has length 199 [2021-11-09 08:39:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:42,606 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 1624 transitions. [2021-11-09 08:39:42,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:39:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1624 transitions. [2021-11-09 08:39:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-09 08:39:42,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:42,610 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 12, 8, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:42,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-11-09 08:39:42,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:42,826 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -360345889, now seen corresponding path program 2 times [2021-11-09 08:39:42,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:42,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533300418] [2021-11-09 08:39:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:42,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:42,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:42,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274099412] [2021-11-09 08:39:42,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:39:42,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:42,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:42,927 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:42,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-09 08:39:45,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:39:45,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:45,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 08:39:45,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 100 proven. 49 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2021-11-09 08:39:46,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:46,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533300418] [2021-11-09 08:39:46,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:46,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274099412] [2021-11-09 08:39:46,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274099412] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:46,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:46,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 08:39:46,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404172547] [2021-11-09 08:39:46,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:39:46,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:46,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:39:46,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:39:46,053 INFO L87 Difference]: Start difference. First operand 1138 states and 1624 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-09 08:39:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:46,677 INFO L93 Difference]: Finished difference Result 2074 states and 3029 transitions. [2021-11-09 08:39:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 08:39:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 202 [2021-11-09 08:39:46,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:46,694 INFO L225 Difference]: With dead ends: 2074 [2021-11-09 08:39:46,695 INFO L226 Difference]: Without dead ends: 1241 [2021-11-09 08:39:46,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:39:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-11-09 08:39:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1116. [2021-11-09 08:39:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 912 states have (on average 1.1359649122807018) internal successors, (1036), 889 states have internal predecessors, (1036), 147 states have call successors, (147), 42 states have call predecessors, (147), 49 states have return successors, (380), 184 states have call predecessors, (380), 147 states have call successors, (380) [2021-11-09 08:39:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1563 transitions. [2021-11-09 08:39:46,862 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1563 transitions. Word has length 202 [2021-11-09 08:39:46,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:46,862 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1563 transitions. [2021-11-09 08:39:46,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 5 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-09 08:39:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1563 transitions. [2021-11-09 08:39:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-09 08:39:46,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:46,866 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:46,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:47,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:47,082 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1330364657, now seen corresponding path program 5 times [2021-11-09 08:39:47,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:47,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667693399] [2021-11-09 08:39:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:47,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:47,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:47,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103704061] [2021-11-09 08:39:47,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:39:47,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:47,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:47,114 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:47,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-09 08:39:49,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-09 08:39:49,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:49,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 08:39:49,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 330 proven. 62 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2021-11-09 08:39:49,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:49,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667693399] [2021-11-09 08:39:49,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:49,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103704061] [2021-11-09 08:39:49,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103704061] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:49,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:49,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-09 08:39:49,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445678900] [2021-11-09 08:39:49,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 08:39:49,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 08:39:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:39:49,876 INFO L87 Difference]: Start difference. First operand 1116 states and 1563 transitions. Second operand has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-09 08:39:51,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:51,163 INFO L93 Difference]: Finished difference Result 2592 states and 3773 transitions. [2021-11-09 08:39:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 08:39:51,164 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 198 [2021-11-09 08:39:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:51,173 INFO L225 Difference]: With dead ends: 2592 [2021-11-09 08:39:51,174 INFO L226 Difference]: Without dead ends: 1607 [2021-11-09 08:39:51,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2021-11-09 08:39:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2021-11-09 08:39:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1218. [2021-11-09 08:39:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 992 states have (on average 1.1451612903225807) internal successors, (1136), 976 states have internal predecessors, (1136), 167 states have call successors, (167), 44 states have call predecessors, (167), 51 states have return successors, (431), 197 states have call predecessors, (431), 167 states have call successors, (431) [2021-11-09 08:39:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1734 transitions. [2021-11-09 08:39:51,309 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1734 transitions. Word has length 198 [2021-11-09 08:39:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:51,310 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1734 transitions. [2021-11-09 08:39:51,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-09 08:39:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1734 transitions. [2021-11-09 08:39:51,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-09 08:39:51,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:51,313 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 12, 9, 9, 9, 9, 9, 9, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:51,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:51,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:51,530 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:51,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1392724959, now seen corresponding path program 7 times [2021-11-09 08:39:51,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:51,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504832559] [2021-11-09 08:39:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:51,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:51,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:51,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259287734] [2021-11-09 08:39:51,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:39:51,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:51,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:51,557 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:51,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-09 08:39:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:39:53,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:39:53,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 541 proven. 28 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-09 08:39:54,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:54,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504832559] [2021-11-09 08:39:54,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:54,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259287734] [2021-11-09 08:39:54,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259287734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:54,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:54,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:39:54,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674582715] [2021-11-09 08:39:54,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:39:54,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:54,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:39:54,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:39:54,616 INFO L87 Difference]: Start difference. First operand 1218 states and 1734 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-09 08:39:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:54,860 INFO L93 Difference]: Finished difference Result 1327 states and 1860 transitions. [2021-11-09 08:39:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:39:54,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 212 [2021-11-09 08:39:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:54,866 INFO L225 Difference]: With dead ends: 1327 [2021-11-09 08:39:54,867 INFO L226 Difference]: Without dead ends: 1220 [2021-11-09 08:39:54,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:39:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-09 08:39:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1218. [2021-11-09 08:39:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 992 states have (on average 1.1401209677419355) internal successors, (1131), 976 states have internal predecessors, (1131), 167 states have call successors, (167), 44 states have call predecessors, (167), 51 states have return successors, (431), 197 states have call predecessors, (431), 167 states have call successors, (431) [2021-11-09 08:39:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1729 transitions. [2021-11-09 08:39:55,089 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1729 transitions. Word has length 212 [2021-11-09 08:39:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:55,089 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1729 transitions. [2021-11-09 08:39:55,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-09 08:39:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1729 transitions. [2021-11-09 08:39:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-09 08:39:55,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:55,093 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 12, 9, 9, 9, 9, 9, 9, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:55,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:55,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:55,302 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash 681647925, now seen corresponding path program 8 times [2021-11-09 08:39:55,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:55,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52763301] [2021-11-09 08:39:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:55,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:55,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:55,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881564796] [2021-11-09 08:39:55,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:39:55,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:55,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:55,340 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:55,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-09 08:39:57,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:39:57,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:39:57,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:39:57,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:39:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 490 proven. 3 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2021-11-09 08:39:58,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:39:58,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52763301] [2021-11-09 08:39:58,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:39:58,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881564796] [2021-11-09 08:39:58,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881564796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:39:58,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:39:58,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 08:39:58,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452809057] [2021-11-09 08:39:58,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:39:58,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:39:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:39:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:39:58,042 INFO L87 Difference]: Start difference. First operand 1218 states and 1729 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 08:39:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:39:58,369 INFO L93 Difference]: Finished difference Result 2139 states and 3080 transitions. [2021-11-09 08:39:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:39:58,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 207 [2021-11-09 08:39:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:39:58,376 INFO L225 Difference]: With dead ends: 2139 [2021-11-09 08:39:58,376 INFO L226 Difference]: Without dead ends: 1210 [2021-11-09 08:39:58,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:39:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-09 08:39:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1174. [2021-11-09 08:39:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 960 states have (on average 1.1322916666666667) internal successors, (1087), 942 states have internal predecessors, (1087), 157 states have call successors, (157), 44 states have call predecessors, (157), 49 states have return successors, (375), 187 states have call predecessors, (375), 157 states have call successors, (375) [2021-11-09 08:39:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1619 transitions. [2021-11-09 08:39:58,534 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1619 transitions. Word has length 207 [2021-11-09 08:39:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:39:58,534 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1619 transitions. [2021-11-09 08:39:58,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 08:39:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1619 transitions. [2021-11-09 08:39:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-09 08:39:58,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:39:58,538 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 11, 9, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:39:58,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-09 08:39:58,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-09 08:39:58,762 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:39:58,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:39:58,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1314030526, now seen corresponding path program 1 times [2021-11-09 08:39:58,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:39:58,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205232244] [2021-11-09 08:39:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:58,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:39:58,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:39:58,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348269379] [2021-11-09 08:39:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:39:58,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:39:58,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:39:58,792 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:39:58,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-09 08:40:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:40:01,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 08:40:01,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2021-11-09 08:40:02,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:40:02,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205232244] [2021-11-09 08:40:02,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:40:02,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348269379] [2021-11-09 08:40:02,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348269379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:40:02,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:40:02,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-09 08:40:02,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960759917] [2021-11-09 08:40:02,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:40:02,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:40:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:40:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:40:02,104 INFO L87 Difference]: Start difference. First operand 1174 states and 1619 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 11 states have internal predecessors, (63), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-09 08:40:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:40:02,514 INFO L93 Difference]: Finished difference Result 1221 states and 1672 transitions. [2021-11-09 08:40:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:40:02,515 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 11 states have internal predecessors, (63), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 199 [2021-11-09 08:40:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:40:02,519 INFO L225 Difference]: With dead ends: 1221 [2021-11-09 08:40:02,519 INFO L226 Difference]: Without dead ends: 1220 [2021-11-09 08:40:02,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:40:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-09 08:40:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1178. [2021-11-09 08:40:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 963 states have (on average 1.1318795430944963) internal successors, (1090), 944 states have internal predecessors, (1090), 158 states have call successors, (158), 44 states have call predecessors, (158), 49 states have return successors, (376), 189 states have call predecessors, (376), 158 states have call successors, (376) [2021-11-09 08:40:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1624 transitions. [2021-11-09 08:40:02,659 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1624 transitions. Word has length 199 [2021-11-09 08:40:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:40:02,660 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1624 transitions. [2021-11-09 08:40:02,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 11 states have internal predecessors, (63), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-09 08:40:02,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1624 transitions. [2021-11-09 08:40:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-09 08:40:02,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:40:02,664 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 13, 13, 13, 13, 13, 13, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:40:02,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-11-09 08:40:02,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-09 08:40:02,866 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:40:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:40:02,866 INFO L85 PathProgramCache]: Analyzing trace with hash 423209883, now seen corresponding path program 6 times [2021-11-09 08:40:02,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:40:02,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745710927] [2021-11-09 08:40:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:40:02,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:40:02,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:40:02,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085001418] [2021-11-09 08:40:02,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:40:02,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:40:02,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:40:02,895 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:40:02,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-09 08:40:05,239 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-09 08:40:05,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:40:05,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-09 08:40:05,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:40:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 433 proven. 34 refuted. 2 times theorem prover too weak. 1187 trivial. 0 not checked. [2021-11-09 08:40:13,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:40:13,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745710927] [2021-11-09 08:40:13,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:40:13,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085001418] [2021-11-09 08:40:13,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085001418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:40:13,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:40:13,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 08:40:13,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216826680] [2021-11-09 08:40:13,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:40:13,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:40:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:40:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=137, Unknown=3, NotChecked=0, Total=182 [2021-11-09 08:40:13,404 INFO L87 Difference]: Start difference. First operand 1178 states and 1624 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-09 08:42:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:18,170 INFO L93 Difference]: Finished difference Result 1260 states and 1822 transitions. [2021-11-09 08:42:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:42:18,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 242 [2021-11-09 08:42:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:18,178 INFO L225 Difference]: With dead ends: 1260 [2021-11-09 08:42:18,179 INFO L226 Difference]: Without dead ends: 1259 [2021-11-09 08:42:18,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=112, Invalid=336, Unknown=14, NotChecked=0, Total=462 [2021-11-09 08:42:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-09 08:42:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1198. [2021-11-09 08:42:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 979 states have (on average 1.1297242083758938) internal successors, (1106), 960 states have internal predecessors, (1106), 158 states have call successors, (158), 44 states have call predecessors, (158), 53 states have return successors, (446), 193 states have call predecessors, (446), 158 states have call successors, (446) [2021-11-09 08:42:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1710 transitions. [2021-11-09 08:42:18,307 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1710 transitions. Word has length 242 [2021-11-09 08:42:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:18,308 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1710 transitions. [2021-11-09 08:42:18,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-09 08:42:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1710 transitions. [2021-11-09 08:42:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-09 08:42:18,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:18,312 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 12, 11, 11, 11, 11, 11, 11, 10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:18,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-09 08:42:18,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-11-09 08:42:18,534 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:42:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1569016689, now seen corresponding path program 9 times [2021-11-09 08:42:18,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:18,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815194790] [2021-11-09 08:42:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:18,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:18,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:42:18,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846977838] [2021-11-09 08:42:18,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:42:18,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:42:18,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:42:18,567 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:42:18,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-09 08:42:21,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-09 08:42:21,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:42:21,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-09 08:42:21,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:42:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 459 proven. 54 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-09 08:42:27,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:27,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815194790] [2021-11-09 08:42:27,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:42:27,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846977838] [2021-11-09 08:42:27,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846977838] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:42:27,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:42:27,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-09 08:42:27,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248049546] [2021-11-09 08:42:27,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 08:42:27,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 08:42:27,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=202, Unknown=1, NotChecked=0, Total=272 [2021-11-09 08:42:27,568 INFO L87 Difference]: Start difference. First operand 1198 states and 1710 transitions. Second operand has 17 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 5 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-09 08:43:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:00,099 INFO L93 Difference]: Finished difference Result 1305 states and 1954 transitions. [2021-11-09 08:43:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:43:00,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 5 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 227 [2021-11-09 08:43:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:00,109 INFO L225 Difference]: With dead ends: 1305 [2021-11-09 08:43:00,109 INFO L226 Difference]: Without dead ends: 1304 [2021-11-09 08:43:00,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=152, Invalid=445, Unknown=3, NotChecked=0, Total=600 [2021-11-09 08:43:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-11-09 08:43:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1218. [2021-11-09 08:43:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 995 states have (on average 1.127638190954774) internal successors, (1122), 976 states have internal predecessors, (1122), 158 states have call successors, (158), 44 states have call predecessors, (158), 57 states have return successors, (516), 197 states have call predecessors, (516), 158 states have call successors, (516) [2021-11-09 08:43:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1796 transitions. [2021-11-09 08:43:00,222 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1796 transitions. Word has length 227 [2021-11-09 08:43:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:00,223 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1796 transitions. [2021-11-09 08:43:00,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 5 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-09 08:43:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1796 transitions. [2021-11-09 08:43:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-09 08:43:00,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:00,226 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 12, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:00,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-11-09 08:43:00,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:00,427 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:00,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1385446145, now seen corresponding path program 3 times [2021-11-09 08:43:00,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:00,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170924865] [2021-11-09 08:43:00,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:00,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:00,450 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:00,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711275713] [2021-11-09 08:43:00,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:43:00,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:00,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:00,451 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:00,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-09 08:43:02,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-09 08:43:02,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:02,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 08:43:02,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 267 proven. 41 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2021-11-09 08:43:04,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:04,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170924865] [2021-11-09 08:43:04,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:04,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711275713] [2021-11-09 08:43:04,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711275713] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:04,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:04,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:43:04,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424499558] [2021-11-09 08:43:04,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:43:04,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:43:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:43:04,126 INFO L87 Difference]: Start difference. First operand 1218 states and 1796 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:43:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:05,048 INFO L93 Difference]: Finished difference Result 1255 states and 1853 transitions. [2021-11-09 08:43:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:43:05,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 223 [2021-11-09 08:43:05,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:05,053 INFO L225 Difference]: With dead ends: 1255 [2021-11-09 08:43:05,053 INFO L226 Difference]: Without dead ends: 1254 [2021-11-09 08:43:05,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:43:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-09 08:43:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1226. [2021-11-09 08:43:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1003 states have (on average 1.1266201395812563) internal successors, (1130), 983 states have internal predecessors, (1130), 158 states have call successors, (158), 44 states have call predecessors, (158), 57 states have return successors, (516), 198 states have call predecessors, (516), 158 states have call successors, (516) [2021-11-09 08:43:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1804 transitions. [2021-11-09 08:43:05,176 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1804 transitions. Word has length 223 [2021-11-09 08:43:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:05,176 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1804 transitions. [2021-11-09 08:43:05,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:43:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1804 transitions. [2021-11-09 08:43:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-09 08:43:05,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:05,181 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 15, 15, 15, 15, 15, 15, 14, 14, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:05,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:05,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:05,406 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash -349392805, now seen corresponding path program 7 times [2021-11-09 08:43:05,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:05,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369040346] [2021-11-09 08:43:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:05,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:05,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:05,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553297844] [2021-11-09 08:43:05,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:43:05,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:05,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:05,442 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:05,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-09 08:43:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:08,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-09 08:43:08,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 488 proven. 108 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2021-11-09 08:43:09,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:09,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369040346] [2021-11-09 08:43:09,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:09,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553297844] [2021-11-09 08:43:09,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553297844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:09,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:09,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-09 08:43:09,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932254198] [2021-11-09 08:43:09,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 08:43:09,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 08:43:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:43:09,637 INFO L87 Difference]: Start difference. First operand 1226 states and 1804 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-09 08:43:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:11,668 INFO L93 Difference]: Finished difference Result 2446 states and 3616 transitions. [2021-11-09 08:43:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 08:43:11,676 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 262 [2021-11-09 08:43:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:11,684 INFO L225 Difference]: With dead ends: 2446 [2021-11-09 08:43:11,684 INFO L226 Difference]: Without dead ends: 1379 [2021-11-09 08:43:11,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2021-11-09 08:43:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2021-11-09 08:43:11,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1297. [2021-11-09 08:43:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1057 states have (on average 1.1220435193945129) internal successors, (1186), 1040 states have internal predecessors, (1186), 166 states have call successors, (166), 50 states have call predecessors, (166), 66 states have return successors, (517), 206 states have call predecessors, (517), 166 states have call successors, (517) [2021-11-09 08:43:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1869 transitions. [2021-11-09 08:43:11,823 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1869 transitions. Word has length 262 [2021-11-09 08:43:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:11,824 INFO L470 AbstractCegarLoop]: Abstraction has 1297 states and 1869 transitions. [2021-11-09 08:43:11,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 16 states have internal predecessors, (89), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-09 08:43:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1869 transitions. [2021-11-09 08:43:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-09 08:43:11,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:11,829 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 12, 12, 12, 12, 12, 12, 12, 11, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:11,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:12,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-11-09 08:43:12,042 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1902738547, now seen corresponding path program 10 times [2021-11-09 08:43:12,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:12,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072751280] [2021-11-09 08:43:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:12,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:12,074 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:12,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738701773] [2021-11-09 08:43:12,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:43:12,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:12,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:12,076 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:12,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-09 08:43:15,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:43:15,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:15,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 08:43:15,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 819 proven. 73 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2021-11-09 08:43:16,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:16,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072751280] [2021-11-09 08:43:16,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:16,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738701773] [2021-11-09 08:43:16,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738701773] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:16,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:16,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-09 08:43:16,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960937071] [2021-11-09 08:43:16,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:43:16,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:43:16,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:43:16,186 INFO L87 Difference]: Start difference. First operand 1297 states and 1869 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-09 08:43:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:17,802 INFO L93 Difference]: Finished difference Result 2086 states and 3114 transitions. [2021-11-09 08:43:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:43:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 237 [2021-11-09 08:43:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:17,809 INFO L225 Difference]: With dead ends: 2086 [2021-11-09 08:43:17,809 INFO L226 Difference]: Without dead ends: 1173 [2021-11-09 08:43:17,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:43:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-09 08:43:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1111. [2021-11-09 08:43:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 902 states have (on average 1.1031042128603104) internal successors, (995), 895 states have internal predecessors, (995), 142 states have call successors, (142), 46 states have call predecessors, (142), 59 states have return successors, (412), 169 states have call predecessors, (412), 142 states have call successors, (412) [2021-11-09 08:43:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1549 transitions. [2021-11-09 08:43:17,924 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1549 transitions. Word has length 237 [2021-11-09 08:43:17,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:17,925 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 1549 transitions. [2021-11-09 08:43:17,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-09 08:43:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1549 transitions. [2021-11-09 08:43:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-09 08:43:17,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:17,929 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:17,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:18,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-11-09 08:43:18,146 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1605984379, now seen corresponding path program 4 times [2021-11-09 08:43:18,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:18,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781017330] [2021-11-09 08:43:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:18,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:18,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:18,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382546684] [2021-11-09 08:43:18,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:43:18,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:18,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:18,181 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:18,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-09 08:43:21,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:43:21,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:21,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 08:43:21,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 320 proven. 135 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2021-11-09 08:43:22,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:22,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781017330] [2021-11-09 08:43:22,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:22,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382546684] [2021-11-09 08:43:22,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382546684] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:22,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:22,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:43:22,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78447362] [2021-11-09 08:43:22,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:43:22,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:43:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:43:22,132 INFO L87 Difference]: Start difference. First operand 1111 states and 1549 transitions. Second operand has 10 states, 8 states have (on average 8.75) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 08:43:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:22,923 INFO L93 Difference]: Finished difference Result 1411 states and 2090 transitions. [2021-11-09 08:43:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:43:22,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 243 [2021-11-09 08:43:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:22,935 INFO L225 Difference]: With dead ends: 1411 [2021-11-09 08:43:22,935 INFO L226 Difference]: Without dead ends: 1410 [2021-11-09 08:43:22,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:43:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-09 08:43:23,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1201. [2021-11-09 08:43:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 977 states have (on average 1.1074718526100307) internal successors, (1082), 962 states have internal predecessors, (1082), 155 states have call successors, (155), 46 states have call predecessors, (155), 61 states have return successors, (494), 192 states have call predecessors, (494), 155 states have call successors, (494) [2021-11-09 08:43:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1731 transitions. [2021-11-09 08:43:23,044 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1731 transitions. Word has length 243 [2021-11-09 08:43:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:23,045 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 1731 transitions. [2021-11-09 08:43:23,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 10 states have internal predecessors, (70), 4 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-09 08:43:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1731 transitions. [2021-11-09 08:43:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-09 08:43:23,049 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:23,049 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 15, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:23,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:23,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-11-09 08:43:23,278 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1903788882, now seen corresponding path program 3 times [2021-11-09 08:43:23,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:23,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970826203] [2021-11-09 08:43:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:23,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:23,332 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:23,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886077901] [2021-11-09 08:43:23,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:43:23,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:23,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:23,333 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:23,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-09 08:43:25,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 08:43:25,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:25,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:43:25,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 1519 trivial. 0 not checked. [2021-11-09 08:43:26,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:26,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970826203] [2021-11-09 08:43:26,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:26,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886077901] [2021-11-09 08:43:26,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886077901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:26,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:26,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:43:26,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465910139] [2021-11-09 08:43:26,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:43:26,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:43:26,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:43:26,699 INFO L87 Difference]: Start difference. First operand 1201 states and 1731 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-09 08:43:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:26,977 INFO L93 Difference]: Finished difference Result 1265 states and 1842 transitions. [2021-11-09 08:43:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:43:26,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 262 [2021-11-09 08:43:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:26,983 INFO L225 Difference]: With dead ends: 1265 [2021-11-09 08:43:26,983 INFO L226 Difference]: Without dead ends: 1264 [2021-11-09 08:43:26,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:43:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-11-09 08:43:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1194. [2021-11-09 08:43:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 971 states have (on average 1.1050463439752831) internal successors, (1073), 955 states have internal predecessors, (1073), 155 states have call successors, (155), 46 states have call predecessors, (155), 61 states have return successors, (494), 192 states have call predecessors, (494), 155 states have call successors, (494) [2021-11-09 08:43:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1722 transitions. [2021-11-09 08:43:27,102 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1722 transitions. Word has length 262 [2021-11-09 08:43:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:27,103 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1722 transitions. [2021-11-09 08:43:27,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-09 08:43:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1722 transitions. [2021-11-09 08:43:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-09 08:43:27,107 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:27,107 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 14, 13, 13, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:27,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:27,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-09 08:43:27,322 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:27,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:27,322 INFO L85 PathProgramCache]: Analyzing trace with hash -919196922, now seen corresponding path program 2 times [2021-11-09 08:43:27,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:27,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948425962] [2021-11-09 08:43:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:27,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:27,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:27,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324201317] [2021-11-09 08:43:27,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:43:27,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:27,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:27,366 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:27,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-09 08:43:29,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 08:43:29,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:29,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:43:30,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-11-09 08:43:31,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:31,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948425962] [2021-11-09 08:43:31,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:31,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324201317] [2021-11-09 08:43:31,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324201317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:31,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:31,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 08:43:31,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020518005] [2021-11-09 08:43:31,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:43:31,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:43:31,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:43:31,258 INFO L87 Difference]: Start difference. First operand 1194 states and 1722 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:43:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:31,527 INFO L93 Difference]: Finished difference Result 1196 states and 1722 transitions. [2021-11-09 08:43:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:43:31,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 269 [2021-11-09 08:43:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:31,534 INFO L225 Difference]: With dead ends: 1196 [2021-11-09 08:43:31,534 INFO L226 Difference]: Without dead ends: 1195 [2021-11-09 08:43:31,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:43:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-11-09 08:43:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1194. [2021-11-09 08:43:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 971 states have (on average 1.1029866117404736) internal successors, (1071), 955 states have internal predecessors, (1071), 155 states have call successors, (155), 46 states have call predecessors, (155), 61 states have return successors, (494), 192 states have call predecessors, (494), 155 states have call successors, (494) [2021-11-09 08:43:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1720 transitions. [2021-11-09 08:43:31,636 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1720 transitions. Word has length 269 [2021-11-09 08:43:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:31,637 INFO L470 AbstractCegarLoop]: Abstraction has 1194 states and 1720 transitions. [2021-11-09 08:43:31,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-09 08:43:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1720 transitions. [2021-11-09 08:43:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-09 08:43:31,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:31,640 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 16, 16, 16, 16, 16, 16, 15, 15, 13, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:31,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-09 08:43:31,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-09 08:43:31,866 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1325642891, now seen corresponding path program 8 times [2021-11-09 08:43:31,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:31,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289752838] [2021-11-09 08:43:31,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:31,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:31,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:31,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091088747] [2021-11-09 08:43:31,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:43:31,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:31,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:31,890 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:31,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-09 08:43:34,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:43:34,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:34,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 08:43:34,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 1417 proven. 11 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2021-11-09 08:43:35,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:35,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289752838] [2021-11-09 08:43:35,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:35,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091088747] [2021-11-09 08:43:35,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091088747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:35,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:35,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-09 08:43:35,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742343086] [2021-11-09 08:43:35,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:43:35,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:43:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:43:35,810 INFO L87 Difference]: Start difference. First operand 1194 states and 1720 transitions. Second operand has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-09 08:43:37,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:37,137 INFO L93 Difference]: Finished difference Result 2220 states and 3267 transitions. [2021-11-09 08:43:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:43:37,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 288 [2021-11-09 08:43:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:37,143 INFO L225 Difference]: With dead ends: 2220 [2021-11-09 08:43:37,144 INFO L226 Difference]: Without dead ends: 1201 [2021-11-09 08:43:37,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2021-11-09 08:43:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-11-09 08:43:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1153. [2021-11-09 08:43:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 940 states have (on average 1.1053191489361702) internal successors, (1039), 924 states have internal predecessors, (1039), 146 states have call successors, (146), 41 states have call predecessors, (146), 60 states have return successors, (477), 187 states have call predecessors, (477), 146 states have call successors, (477) [2021-11-09 08:43:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1662 transitions. [2021-11-09 08:43:37,263 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1662 transitions. Word has length 288 [2021-11-09 08:43:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:37,263 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1662 transitions. [2021-11-09 08:43:37,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 7 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-09 08:43:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1662 transitions. [2021-11-09 08:43:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-09 08:43:37,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:37,267 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 15, 13, 13, 13, 13, 13, 13, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:37,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:37,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-09 08:43:37,486 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:37,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash 252042695, now seen corresponding path program 11 times [2021-11-09 08:43:37,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:37,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681247532] [2021-11-09 08:43:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:37,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:37,511 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:37,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932820539] [2021-11-09 08:43:37,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:43:37,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:37,513 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:37,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-09 08:43:40,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-09 08:43:40,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:40,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 08:43:40,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 1020 proven. 96 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2021-11-09 08:43:41,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:41,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681247532] [2021-11-09 08:43:41,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:41,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932820539] [2021-11-09 08:43:41,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932820539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:41,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:41,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 08:43:41,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702320942] [2021-11-09 08:43:41,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:43:41,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:43:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:43:41,715 INFO L87 Difference]: Start difference. First operand 1153 states and 1662 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:43:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:43,045 INFO L93 Difference]: Finished difference Result 1770 states and 2531 transitions. [2021-11-09 08:43:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 08:43:43,046 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 282 [2021-11-09 08:43:43,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:43,052 INFO L225 Difference]: With dead ends: 1770 [2021-11-09 08:43:43,052 INFO L226 Difference]: Without dead ends: 1196 [2021-11-09 08:43:43,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2021-11-09 08:43:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-11-09 08:43:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1163. [2021-11-09 08:43:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 948 states have (on average 1.1075949367088607) internal successors, (1050), 931 states have internal predecessors, (1050), 148 states have call successors, (148), 41 states have call predecessors, (148), 60 states have return successors, (502), 190 states have call predecessors, (502), 147 states have call successors, (502) [2021-11-09 08:43:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1700 transitions. [2021-11-09 08:43:43,162 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1700 transitions. Word has length 282 [2021-11-09 08:43:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:43,163 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1700 transitions. [2021-11-09 08:43:43,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:43:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1700 transitions. [2021-11-09 08:43:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-09 08:43:43,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:43,166 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 17, 17, 17, 17, 17, 17, 16, 16, 13, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:43,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:43,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-09 08:43:43,382 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash 359240265, now seen corresponding path program 9 times [2021-11-09 08:43:43,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:43,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061345224] [2021-11-09 08:43:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:43,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:43,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:43,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008397567] [2021-11-09 08:43:43,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:43:43,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:43,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:43,412 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:43,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-09 08:43:46,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-09 08:43:46,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:46,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 08:43:46,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 1504 proven. 104 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2021-11-09 08:43:47,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:47,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061345224] [2021-11-09 08:43:47,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:47,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008397567] [2021-11-09 08:43:47,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008397567] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:47,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:47,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 08:43:47,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231982235] [2021-11-09 08:43:47,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:43:47,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:43:47,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:43:47,483 INFO L87 Difference]: Start difference. First operand 1163 states and 1700 transitions. Second operand has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 states have internal predecessors, (98), 8 states have call successors, (15), 2 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-09 08:43:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:49,012 INFO L93 Difference]: Finished difference Result 2320 states and 3434 transitions. [2021-11-09 08:43:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 08:43:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 states have internal predecessors, (98), 8 states have call successors, (15), 2 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) Word has length 298 [2021-11-09 08:43:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:49,021 INFO L225 Difference]: With dead ends: 2320 [2021-11-09 08:43:49,022 INFO L226 Difference]: Without dead ends: 1341 [2021-11-09 08:43:49,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:43:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-11-09 08:43:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1177. [2021-11-09 08:43:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 958 states have (on average 1.1064718162839249) internal successors, (1060), 940 states have internal predecessors, (1060), 152 states have call successors, (152), 47 states have call predecessors, (152), 60 states have return successors, (505), 189 states have call predecessors, (505), 151 states have call successors, (505) [2021-11-09 08:43:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1717 transitions. [2021-11-09 08:43:49,147 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1717 transitions. Word has length 298 [2021-11-09 08:43:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:49,148 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1717 transitions. [2021-11-09 08:43:49,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 states have internal predecessors, (98), 8 states have call successors, (15), 2 states have call predecessors, (15), 8 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-09 08:43:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1717 transitions. [2021-11-09 08:43:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-09 08:43:49,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:49,151 INFO L513 BasicCegarLoop]: trace histogram [33, 30, 20, 20, 20, 20, 18, 18, 17, 17, 13, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:49,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:49,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:49,366 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash -752691065, now seen corresponding path program 10 times [2021-11-09 08:43:49,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:49,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470940449] [2021-11-09 08:43:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:49,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:49,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:49,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598923078] [2021-11-09 08:43:49,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:43:49,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:49,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:49,390 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:49,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-09 08:43:52,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:43:52,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:43:52,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-09 08:43:52,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3018 backedges. 1225 proven. 435 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2021-11-09 08:43:54,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:54,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470940449] [2021-11-09 08:43:54,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:43:54,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598923078] [2021-11-09 08:43:54,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598923078] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:43:54,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:43:54,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-09 08:43:54,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12061340] [2021-11-09 08:43:54,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 08:43:54,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 08:43:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:43:54,109 INFO L87 Difference]: Start difference. First operand 1177 states and 1717 transitions. Second operand has 22 states, 20 states have (on average 5.7) internal successors, (114), 21 states have internal predecessors, (114), 10 states have call successors, (17), 4 states have call predecessors, (17), 10 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-09 08:43:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:58,610 INFO L93 Difference]: Finished difference Result 2999 states and 4707 transitions. [2021-11-09 08:43:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 08:43:58,610 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.7) internal successors, (114), 21 states have internal predecessors, (114), 10 states have call successors, (17), 4 states have call predecessors, (17), 10 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) Word has length 318 [2021-11-09 08:43:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:58,618 INFO L225 Difference]: With dead ends: 2999 [2021-11-09 08:43:58,618 INFO L226 Difference]: Without dead ends: 1998 [2021-11-09 08:43:58,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=322, Invalid=1658, Unknown=0, NotChecked=0, Total=1980 [2021-11-09 08:43:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-09 08:43:58,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1421. [2021-11-09 08:43:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1162 states have (on average 1.1247848537005163) internal successors, (1307), 1134 states have internal predecessors, (1307), 191 states have call successors, (191), 62 states have call predecessors, (191), 61 states have return successors, (635), 224 states have call predecessors, (635), 190 states have call successors, (635) [2021-11-09 08:43:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2133 transitions. [2021-11-09 08:43:58,779 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2133 transitions. Word has length 318 [2021-11-09 08:43:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:58,780 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 2133 transitions. [2021-11-09 08:43:58,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.7) internal successors, (114), 21 states have internal predecessors, (114), 10 states have call successors, (17), 4 states have call predecessors, (17), 10 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-09 08:43:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2133 transitions. [2021-11-09 08:43:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-09 08:43:58,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:58,783 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 17, 12, 12, 12, 12, 12, 12, 12, 12, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:58,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:59,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:59,005 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:43:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1181876572, now seen corresponding path program 1 times [2021-11-09 08:43:59,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:59,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210101989] [2021-11-09 08:43:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:59,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:59,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:43:59,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038323182] [2021-11-09 08:43:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:59,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:43:59,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:59,038 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:43:59,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-09 08:44:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:02,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:44:02,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2149 backedges. 154 proven. 6 refuted. 0 times theorem prover too weak. 1989 trivial. 0 not checked. [2021-11-09 08:44:03,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:03,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210101989] [2021-11-09 08:44:03,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:03,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038323182] [2021-11-09 08:44:03,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038323182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:03,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:03,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 08:44:03,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428138158] [2021-11-09 08:44:03,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:44:03,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:03,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:44:03,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:03,173 INFO L87 Difference]: Start difference. First operand 1421 states and 2133 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:44:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:03,835 INFO L93 Difference]: Finished difference Result 2489 states and 3791 transitions. [2021-11-09 08:44:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:44:03,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 294 [2021-11-09 08:44:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:03,844 INFO L225 Difference]: With dead ends: 2489 [2021-11-09 08:44:03,844 INFO L226 Difference]: Without dead ends: 1406 [2021-11-09 08:44:03,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:44:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2021-11-09 08:44:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1365. [2021-11-09 08:44:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1120 states have (on average 1.1169642857142856) internal successors, (1251), 1092 states have internal predecessors, (1251), 177 states have call successors, (177), 62 states have call predecessors, (177), 61 states have return successors, (537), 210 states have call predecessors, (537), 176 states have call successors, (537) [2021-11-09 08:44:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1965 transitions. [2021-11-09 08:44:03,987 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1965 transitions. Word has length 294 [2021-11-09 08:44:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:03,988 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 1965 transitions. [2021-11-09 08:44:03,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:44:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1965 transitions. [2021-11-09 08:44:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-09 08:44:03,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:03,992 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 17, 13, 13, 13, 13, 13, 13, 13, 13, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:04,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-09 08:44:04,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-11-09 08:44:04,214 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:04,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash -986442394, now seen corresponding path program 2 times [2021-11-09 08:44:04,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:04,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270484406] [2021-11-09 08:44:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:04,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:04,277 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:04,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694614697] [2021-11-09 08:44:04,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:44:04,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:04,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:04,282 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:04,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-09 08:44:07,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:44:07,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:44:07,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 08:44:07,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2337 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 2259 trivial. 0 not checked. [2021-11-09 08:44:09,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:09,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270484406] [2021-11-09 08:44:09,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:09,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694614697] [2021-11-09 08:44:09,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694614697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:09,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:09,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 08:44:09,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892132650] [2021-11-09 08:44:09,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:44:09,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:44:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:44:09,171 INFO L87 Difference]: Start difference. First operand 1365 states and 1965 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:44:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:09,612 INFO L93 Difference]: Finished difference Result 1406 states and 2017 transitions. [2021-11-09 08:44:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:44:09,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 304 [2021-11-09 08:44:09,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:09,618 INFO L225 Difference]: With dead ends: 1406 [2021-11-09 08:44:09,618 INFO L226 Difference]: Without dead ends: 1405 [2021-11-09 08:44:09,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:44:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-09 08:44:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1364. [2021-11-09 08:44:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1120 states have (on average 1.1044642857142857) internal successors, (1237), 1091 states have internal predecessors, (1237), 177 states have call successors, (177), 62 states have call predecessors, (177), 61 states have return successors, (537), 210 states have call predecessors, (537), 176 states have call successors, (537) [2021-11-09 08:44:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1951 transitions. [2021-11-09 08:44:09,746 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1951 transitions. Word has length 304 [2021-11-09 08:44:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:09,747 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1951 transitions. [2021-11-09 08:44:09,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-09 08:44:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1951 transitions. [2021-11-09 08:44:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-09 08:44:09,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:09,751 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 18, 14, 14, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:09,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-11-09 08:44:09,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:09,966 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1738209245, now seen corresponding path program 1 times [2021-11-09 08:44:09,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:09,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317729628] [2021-11-09 08:44:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:09,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:10,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:10,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911278974] [2021-11-09 08:44:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:10,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:10,035 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:10,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-09 08:44:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:13,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-09 08:44:13,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2667 backedges. 425 proven. 119 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2021-11-09 08:44:15,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:15,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317729628] [2021-11-09 08:44:15,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:15,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911278974] [2021-11-09 08:44:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911278974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:15,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:15,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-09 08:44:15,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130515112] [2021-11-09 08:44:15,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 08:44:15,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 08:44:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:44:15,182 INFO L87 Difference]: Start difference. First operand 1364 states and 1951 transitions. Second operand has 19 states, 18 states have (on average 5.222222222222222) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (17), 1 states have call predecessors, (17), 4 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:17,256 INFO L93 Difference]: Finished difference Result 1484 states and 2131 transitions. [2021-11-09 08:44:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 08:44:17,257 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.222222222222222) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (17), 1 states have call predecessors, (17), 4 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) Word has length 322 [2021-11-09 08:44:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:17,261 INFO L225 Difference]: With dead ends: 1484 [2021-11-09 08:44:17,261 INFO L226 Difference]: Without dead ends: 1483 [2021-11-09 08:44:17,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2021-11-09 08:44:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2021-11-09 08:44:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1386. [2021-11-09 08:44:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1138 states have (on average 1.1036906854130053) internal successors, (1256), 1109 states have internal predecessors, (1256), 181 states have call successors, (181), 62 states have call predecessors, (181), 61 states have return successors, (550), 214 states have call predecessors, (550), 180 states have call successors, (550) [2021-11-09 08:44:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1987 transitions. [2021-11-09 08:44:17,367 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1987 transitions. Word has length 322 [2021-11-09 08:44:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:17,367 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 1987 transitions. [2021-11-09 08:44:17,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.222222222222222) internal successors, (94), 19 states have internal predecessors, (94), 7 states have call successors, (17), 1 states have call predecessors, (17), 4 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1987 transitions. [2021-11-09 08:44:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-09 08:44:17,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:17,372 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 18, 15, 15, 15, 15, 15, 15, 15, 15, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:17,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-11-09 08:44:17,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:17,586 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:17,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1809242209, now seen corresponding path program 2 times [2021-11-09 08:44:17,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:17,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612966024] [2021-11-09 08:44:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:17,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:17,617 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:17,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095156707] [2021-11-09 08:44:17,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:44:17,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:17,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:17,619 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:17,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-09 08:44:21,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:44:21,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:44:21,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-09 08:44:21,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 351 proven. 116 refuted. 0 times theorem prover too weak. 2412 trivial. 0 not checked. [2021-11-09 08:44:23,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:23,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612966024] [2021-11-09 08:44:23,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:23,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095156707] [2021-11-09 08:44:23,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095156707] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:23,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:23,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-09 08:44:23,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084317222] [2021-11-09 08:44:23,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:44:23,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:44:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:44:23,235 INFO L87 Difference]: Start difference. First operand 1386 states and 1987 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 8 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-09 08:44:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:25,859 INFO L93 Difference]: Finished difference Result 3260 states and 4977 transitions. [2021-11-09 08:44:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 08:44:25,860 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 8 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) Word has length 332 [2021-11-09 08:44:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:25,865 INFO L225 Difference]: With dead ends: 3260 [2021-11-09 08:44:25,866 INFO L226 Difference]: Without dead ends: 2232 [2021-11-09 08:44:25,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=296, Invalid=1186, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 08:44:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2021-11-09 08:44:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 1722. [2021-11-09 08:44:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1420 states have (on average 1.1077464788732394) internal successors, (1573), 1379 states have internal predecessors, (1573), 235 states have call successors, (235), 63 states have call predecessors, (235), 61 states have return successors, (710), 279 states have call predecessors, (710), 234 states have call successors, (710) [2021-11-09 08:44:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2518 transitions. [2021-11-09 08:44:26,027 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2518 transitions. Word has length 332 [2021-11-09 08:44:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:26,027 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 2518 transitions. [2021-11-09 08:44:26,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 8 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-09 08:44:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2518 transitions. [2021-11-09 08:44:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-09 08:44:26,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:26,030 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 18, 15, 15, 15, 15, 15, 15, 15, 15, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:26,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-11-09 08:44:26,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:26,233 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:26,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash -96652639, now seen corresponding path program 3 times [2021-11-09 08:44:26,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:26,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798147021] [2021-11-09 08:44:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:26,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:26,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:26,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326997325] [2021-11-09 08:44:26,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:44:26,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:26,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:26,286 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:26,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-09 08:44:30,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 08:44:30,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:44:30,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-09 08:44:30,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 239 proven. 109 refuted. 0 times theorem prover too weak. 2531 trivial. 0 not checked. [2021-11-09 08:44:31,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:31,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798147021] [2021-11-09 08:44:31,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:31,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326997325] [2021-11-09 08:44:31,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326997325] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:31,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:31,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-09 08:44:31,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970489145] [2021-11-09 08:44:31,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:44:31,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:44:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:44:31,836 INFO L87 Difference]: Start difference. First operand 1722 states and 2518 transitions. Second operand has 18 states, 17 states have (on average 5.411764705882353) internal successors, (92), 18 states have internal predecessors, (92), 7 states have call successors, (17), 1 states have call predecessors, (17), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:33,560 INFO L93 Difference]: Finished difference Result 1879 states and 2753 transitions. [2021-11-09 08:44:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 08:44:33,561 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.411764705882353) internal successors, (92), 18 states have internal predecessors, (92), 7 states have call successors, (17), 1 states have call predecessors, (17), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 332 [2021-11-09 08:44:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:33,566 INFO L225 Difference]: With dead ends: 1879 [2021-11-09 08:44:33,566 INFO L226 Difference]: Without dead ends: 1878 [2021-11-09 08:44:33,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-11-09 08:44:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2021-11-09 08:44:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1722. [2021-11-09 08:44:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1420 states have (on average 1.1077464788732394) internal successors, (1573), 1379 states have internal predecessors, (1573), 235 states have call successors, (235), 63 states have call predecessors, (235), 61 states have return successors, (710), 279 states have call predecessors, (710), 234 states have call successors, (710) [2021-11-09 08:44:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2518 transitions. [2021-11-09 08:44:33,741 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2518 transitions. Word has length 332 [2021-11-09 08:44:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:33,741 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 2518 transitions. [2021-11-09 08:44:33,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.411764705882353) internal successors, (92), 18 states have internal predecessors, (92), 7 states have call successors, (17), 1 states have call predecessors, (17), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2518 transitions. [2021-11-09 08:44:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-09 08:44:33,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:33,745 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 18, 18, 18, 18, 18, 18, 17, 17, 17, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:33,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-11-09 08:44:33,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-09 08:44:33,945 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:33,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1093083474, now seen corresponding path program 12 times [2021-11-09 08:44:33,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:33,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912496967] [2021-11-09 08:44:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:33,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:33,978 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:33,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143952808] [2021-11-09 08:44:33,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:44:33,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:33,979 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:33,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-09 08:44:37,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-09 08:44:38,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:44:38,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 08:44:38,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 126 proven. 99 refuted. 0 times theorem prover too weak. 3113 trivial. 0 not checked. [2021-11-09 08:44:39,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:39,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912496967] [2021-11-09 08:44:39,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:39,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143952808] [2021-11-09 08:44:39,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143952808] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:39,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:39,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 08:44:39,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617667831] [2021-11-09 08:44:39,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:44:39,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:39,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:44:39,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:44:39,183 INFO L87 Difference]: Start difference. First operand 1722 states and 2518 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-09 08:44:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:39,780 INFO L93 Difference]: Finished difference Result 1902 states and 2756 transitions. [2021-11-09 08:44:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:44:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 349 [2021-11-09 08:44:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:39,786 INFO L225 Difference]: With dead ends: 1902 [2021-11-09 08:44:39,786 INFO L226 Difference]: Without dead ends: 1901 [2021-11-09 08:44:39,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:44:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2021-11-09 08:44:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1858. [2021-11-09 08:44:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1535 states have (on average 1.1087947882736156) internal successors, (1702), 1490 states have internal predecessors, (1702), 251 states have call successors, (251), 67 states have call predecessors, (251), 66 states have return successors, (738), 300 states have call predecessors, (738), 250 states have call successors, (738) [2021-11-09 08:44:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2691 transitions. [2021-11-09 08:44:39,910 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2691 transitions. Word has length 349 [2021-11-09 08:44:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:39,910 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 2691 transitions. [2021-11-09 08:44:39,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-09 08:44:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2691 transitions. [2021-11-09 08:44:39,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-09 08:44:39,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:39,913 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 19, 19, 19, 19, 19, 19, 19, 19, 15, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:39,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-11-09 08:44:40,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:40,114 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1094144779, now seen corresponding path program 5 times [2021-11-09 08:44:40,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:40,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815025266] [2021-11-09 08:44:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:40,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:40,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:40,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663025423] [2021-11-09 08:44:40,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:44:40,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:40,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:40,152 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:40,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-09 08:44:44,313 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-11-09 08:44:44,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:44:44,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 08:44:44,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3394 backedges. 41 proven. 383 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-09 08:44:45,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:45,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815025266] [2021-11-09 08:44:45,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:45,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663025423] [2021-11-09 08:44:45,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663025423] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:45,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:45,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 08:44:45,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322114822] [2021-11-09 08:44:45,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:44:45,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:44:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:44:45,477 INFO L87 Difference]: Start difference. First operand 1858 states and 2691 transitions. Second operand has 14 states, 12 states have (on average 8.0) internal successors, (96), 14 states have internal predecessors, (96), 7 states have call successors, (17), 1 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:47,027 INFO L93 Difference]: Finished difference Result 2464 states and 3658 transitions. [2021-11-09 08:44:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 08:44:47,027 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.0) internal successors, (96), 14 states have internal predecessors, (96), 7 states have call successors, (17), 1 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 343 [2021-11-09 08:44:47,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:47,034 INFO L225 Difference]: With dead ends: 2464 [2021-11-09 08:44:47,034 INFO L226 Difference]: Without dead ends: 2463 [2021-11-09 08:44:47,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:44:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-11-09 08:44:47,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1973. [2021-11-09 08:44:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1634 states have (on average 1.1077111383108935) internal successors, (1810), 1581 states have internal predecessors, (1810), 267 states have call successors, (267), 67 states have call predecessors, (267), 66 states have return successors, (797), 324 states have call predecessors, (797), 266 states have call successors, (797) [2021-11-09 08:44:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2874 transitions. [2021-11-09 08:44:47,201 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2874 transitions. Word has length 343 [2021-11-09 08:44:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:47,202 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 2874 transitions. [2021-11-09 08:44:47,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.0) internal successors, (96), 14 states have internal predecessors, (96), 7 states have call successors, (17), 1 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2874 transitions. [2021-11-09 08:44:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-09 08:44:47,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:47,205 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 19, 19, 19, 19, 19, 19, 18, 18, 18, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:47,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-11-09 08:44:47,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:47,422 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1071350455, now seen corresponding path program 13 times [2021-11-09 08:44:47,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:47,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66046798] [2021-11-09 08:44:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:47,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:47,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:47,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456683665] [2021-11-09 08:44:47,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:44:47,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:47,478 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:47,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-09 08:44:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:51,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 08:44:51,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:44:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3733 backedges. 391 proven. 80 refuted. 0 times theorem prover too weak. 3262 trivial. 0 not checked. [2021-11-09 08:44:53,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66046798] [2021-11-09 08:44:53,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:44:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456683665] [2021-11-09 08:44:53,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456683665] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:44:53,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:44:53,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 08:44:53,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852239890] [2021-11-09 08:44:53,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:44:53,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:44:53,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:44:53,411 INFO L87 Difference]: Start difference. First operand 1973 states and 2874 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 14 states have internal predecessors, (94), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:55,064 INFO L93 Difference]: Finished difference Result 3225 states and 4782 transitions. [2021-11-09 08:44:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 08:44:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 14 states have internal predecessors, (94), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 367 [2021-11-09 08:44:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:55,070 INFO L225 Difference]: With dead ends: 3225 [2021-11-09 08:44:55,071 INFO L226 Difference]: Without dead ends: 2042 [2021-11-09 08:44:55,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2021-11-09 08:44:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-09 08:44:55,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1983. [2021-11-09 08:44:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1641 states have (on average 1.1072516758074344) internal successors, (1817), 1590 states have internal predecessors, (1817), 268 states have call successors, (268), 68 states have call predecessors, (268), 68 states have return successors, (778), 324 states have call predecessors, (778), 267 states have call successors, (778) [2021-11-09 08:44:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2863 transitions. [2021-11-09 08:44:55,265 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2863 transitions. Word has length 367 [2021-11-09 08:44:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:55,266 INFO L470 AbstractCegarLoop]: Abstraction has 1983 states and 2863 transitions. [2021-11-09 08:44:55,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 14 states have internal predecessors, (94), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-09 08:44:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2863 transitions. [2021-11-09 08:44:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-11-09 08:44:55,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:55,275 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 22, 22, 22, 22, 22, 22, 21, 21, 15, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:55,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-11-09 08:44:55,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:55,486 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:44:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1411951851, now seen corresponding path program 11 times [2021-11-09 08:44:55,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:55,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228627483] [2021-11-09 08:44:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:55,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:55,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:44:55,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404850792] [2021-11-09 08:44:55,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:44:55,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:44:55,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:44:55,568 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:44:55,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-09 08:45:00,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-11-09 08:45:00,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:45:00,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-09 08:45:00,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:45:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4055 backedges. 1114 proven. 432 refuted. 0 times theorem prover too weak. 2509 trivial. 0 not checked. [2021-11-09 08:45:02,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:02,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228627483] [2021-11-09 08:45:02,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:45:02,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404850792] [2021-11-09 08:45:02,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404850792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:45:02,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:45:02,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-09 08:45:02,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378827175] [2021-11-09 08:45:02,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-09 08:45:02,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-09 08:45:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-11-09 08:45:02,192 INFO L87 Difference]: Start difference. First operand 1983 states and 2863 transitions. Second operand has 23 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 11 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) [2021-11-09 08:45:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:05,314 INFO L93 Difference]: Finished difference Result 3516 states and 5178 transitions. [2021-11-09 08:45:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-09 08:45:05,315 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 11 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) Word has length 362 [2021-11-09 08:45:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:05,321 INFO L225 Difference]: With dead ends: 3516 [2021-11-09 08:45:05,321 INFO L226 Difference]: Without dead ends: 2152 [2021-11-09 08:45:05,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=353, Invalid=1903, Unknown=0, NotChecked=0, Total=2256 [2021-11-09 08:45:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-11-09 08:45:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2041. [2021-11-09 08:45:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1687 states have (on average 1.105512744516894) internal successors, (1865), 1635 states have internal predecessors, (1865), 275 states have call successors, (275), 74 states have call predecessors, (275), 73 states have return successors, (790), 331 states have call predecessors, (790), 274 states have call successors, (790) [2021-11-09 08:45:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2930 transitions. [2021-11-09 08:45:05,490 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2930 transitions. Word has length 362 [2021-11-09 08:45:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:05,491 INFO L470 AbstractCegarLoop]: Abstraction has 2041 states and 2930 transitions. [2021-11-09 08:45:05,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 11 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) [2021-11-09 08:45:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2930 transitions. [2021-11-09 08:45:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-11-09 08:45:05,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:05,494 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 18, 17, 17, 17, 17, 17, 17, 16, 16, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:45:05,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-11-09 08:45:05,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:05,694 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:45:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:05,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1814474883, now seen corresponding path program 14 times [2021-11-09 08:45:05,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:05,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537899929] [2021-11-09 08:45:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:05,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:05,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:45:05,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320958764] [2021-11-09 08:45:05,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:45:05,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:05,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:45:05,796 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:45:05,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-09 08:45:10,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:45:10,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:45:10,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 08:45:10,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:45:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3264 backedges. 1417 proven. 95 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2021-11-09 08:45:11,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:11,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537899929] [2021-11-09 08:45:11,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:45:11,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320958764] [2021-11-09 08:45:11,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320958764] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:45:11,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:45:11,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 08:45:11,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064921377] [2021-11-09 08:45:11,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:45:11,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:45:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:45:11,425 INFO L87 Difference]: Start difference. First operand 2041 states and 2930 transitions. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-09 08:45:12,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:12,072 INFO L93 Difference]: Finished difference Result 2166 states and 3058 transitions. [2021-11-09 08:45:12,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:45:12,073 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 352 [2021-11-09 08:45:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:12,078 INFO L225 Difference]: With dead ends: 2166 [2021-11-09 08:45:12,078 INFO L226 Difference]: Without dead ends: 1968 [2021-11-09 08:45:12,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-11-09 08:45:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-11-09 08:45:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1963. [2021-11-09 08:45:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1622 states have (on average 1.1004932182490752) internal successors, (1785), 1570 states have internal predecessors, (1785), 262 states have call successors, (262), 74 states have call predecessors, (262), 73 states have return successors, (750), 318 states have call predecessors, (750), 262 states have call successors, (750) [2021-11-09 08:45:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2797 transitions. [2021-11-09 08:45:12,343 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2797 transitions. Word has length 352 [2021-11-09 08:45:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:12,343 INFO L470 AbstractCegarLoop]: Abstraction has 1963 states and 2797 transitions. [2021-11-09 08:45:12,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 7 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-09 08:45:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2797 transitions. [2021-11-09 08:45:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-09 08:45:12,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:12,346 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 18, 14, 13, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:45:12,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-11-09 08:45:12,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:12,547 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:45:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash -258792344, now seen corresponding path program 6 times [2021-11-09 08:45:12,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:12,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051192997] [2021-11-09 08:45:12,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:12,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:12,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:45:12,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095313045] [2021-11-09 08:45:12,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:45:12,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:12,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:45:12,588 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:45:12,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-09 08:45:16,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-09 08:45:16,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:45:16,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:45:16,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:45:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 75 proven. 17 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2021-11-09 08:45:17,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:17,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051192997] [2021-11-09 08:45:17,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:45:17,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095313045] [2021-11-09 08:45:17,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095313045] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:45:17,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:45:17,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 08:45:17,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624879181] [2021-11-09 08:45:17,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:45:17,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:45:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:45:17,924 INFO L87 Difference]: Start difference. First operand 1963 states and 2797 transitions. Second operand has 7 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:45:18,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:18,419 INFO L93 Difference]: Finished difference Result 2059 states and 2912 transitions. [2021-11-09 08:45:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:45:18,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 330 [2021-11-09 08:45:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:18,426 INFO L225 Difference]: With dead ends: 2059 [2021-11-09 08:45:18,426 INFO L226 Difference]: Without dead ends: 2058 [2021-11-09 08:45:18,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:45:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2021-11-09 08:45:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1993. [2021-11-09 08:45:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1646 states have (on average 1.0984204131227218) internal successors, (1808), 1594 states have internal predecessors, (1808), 263 states have call successors, (263), 74 states have call predecessors, (263), 79 states have return successors, (756), 324 states have call predecessors, (756), 263 states have call successors, (756) [2021-11-09 08:45:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2827 transitions. [2021-11-09 08:45:18,586 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2827 transitions. Word has length 330 [2021-11-09 08:45:18,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:18,586 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 2827 transitions. [2021-11-09 08:45:18,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-09 08:45:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2827 transitions. [2021-11-09 08:45:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-09 08:45:18,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:18,590 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 19, 19, 19, 19, 19, 19, 19, 18, 18, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:45:18,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-09 08:45:18,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-11-09 08:45:18,791 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:45:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1288488879, now seen corresponding path program 15 times [2021-11-09 08:45:18,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:18,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499352881] [2021-11-09 08:45:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:18,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:18,832 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:45:18,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125051682] [2021-11-09 08:45:18,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:45:18,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:18,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:45:18,835 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:45:18,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-09 08:45:23,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 08:45:23,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:45:23,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:45:23,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:45:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3935 backedges. 1420 proven. 0 refuted. 0 times theorem prover too weak. 2515 trivial. 0 not checked. [2021-11-09 08:45:24,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:24,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499352881] [2021-11-09 08:45:24,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:45:24,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125051682] [2021-11-09 08:45:24,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125051682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:24,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:24,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:45:24,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750880130] [2021-11-09 08:45:24,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:45:24,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:45:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:24,434 INFO L87 Difference]: Start difference. First operand 1993 states and 2827 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-09 08:45:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:24,740 INFO L93 Difference]: Finished difference Result 3482 states and 5102 transitions. [2021-11-09 08:45:24,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:24,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 388 [2021-11-09 08:45:24,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:24,746 INFO L225 Difference]: With dead ends: 3482 [2021-11-09 08:45:24,746 INFO L226 Difference]: Without dead ends: 1998 [2021-11-09 08:45:24,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:45:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-09 08:45:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1937. [2021-11-09 08:45:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1590 states have (on average 1.1018867924528302) internal successors, (1752), 1566 states have internal predecessors, (1752), 263 states have call successors, (263), 74 states have call predecessors, (263), 79 states have return successors, (726), 296 states have call predecessors, (726), 263 states have call successors, (726) [2021-11-09 08:45:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2741 transitions. [2021-11-09 08:45:24,960 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2741 transitions. Word has length 388 [2021-11-09 08:45:24,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:24,960 INFO L470 AbstractCegarLoop]: Abstraction has 1937 states and 2741 transitions. [2021-11-09 08:45:24,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-09 08:45:24,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2741 transitions. [2021-11-09 08:45:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-11-09 08:45:24,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:24,964 INFO L513 BasicCegarLoop]: trace histogram [40, 38, 21, 21, 21, 21, 20, 20, 19, 19, 19, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:45:25,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-11-09 08:45:25,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:25,165 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:45:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1698490875, now seen corresponding path program 16 times [2021-11-09 08:45:25,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:25,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229197420] [2021-11-09 08:45:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:25,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:25,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:45:25,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035080352] [2021-11-09 08:45:25,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:45:25,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:25,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:45:25,210 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:45:25,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-09 08:45:29,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:45:29,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:45:29,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 08:45:30,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:45:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4336 backedges. 1506 proven. 273 refuted. 0 times theorem prover too weak. 2557 trivial. 0 not checked. [2021-11-09 08:45:31,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:31,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229197420] [2021-11-09 08:45:31,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:45:31,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035080352] [2021-11-09 08:45:31,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035080352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:45:31,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:45:31,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-09 08:45:31,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379452069] [2021-11-09 08:45:31,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 08:45:31,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 08:45:31,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:45:31,843 INFO L87 Difference]: Start difference. First operand 1937 states and 2741 transitions. Second operand has 21 states, 19 states have (on average 6.052631578947368) internal successors, (115), 21 states have internal predecessors, (115), 9 states have call successors, (16), 3 states have call predecessors, (16), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-09 08:45:37,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:37,547 INFO L93 Difference]: Finished difference Result 4193 states and 6332 transitions. [2021-11-09 08:45:37,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 08:45:37,548 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.052631578947368) internal successors, (115), 21 states have internal predecessors, (115), 9 states have call successors, (16), 3 states have call predecessors, (16), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) Word has length 403 [2021-11-09 08:45:37,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:37,557 INFO L225 Difference]: With dead ends: 4193 [2021-11-09 08:45:37,558 INFO L226 Difference]: Without dead ends: 2804 [2021-11-09 08:45:37,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=333, Invalid=2019, Unknown=0, NotChecked=0, Total=2352 [2021-11-09 08:45:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-09 08:45:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1947. [2021-11-09 08:45:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1605 states have (on average 1.0996884735202492) internal successors, (1765), 1570 states have internal predecessors, (1765), 256 states have call successors, (256), 78 states have call predecessors, (256), 81 states have return successors, (712), 298 states have call predecessors, (712), 256 states have call successors, (712) [2021-11-09 08:45:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2733 transitions. [2021-11-09 08:45:37,780 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2733 transitions. Word has length 403 [2021-11-09 08:45:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:37,780 INFO L470 AbstractCegarLoop]: Abstraction has 1947 states and 2733 transitions. [2021-11-09 08:45:37,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.052631578947368) internal successors, (115), 21 states have internal predecessors, (115), 9 states have call successors, (16), 3 states have call predecessors, (16), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2021-11-09 08:45:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2733 transitions. [2021-11-09 08:45:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-09 08:45:37,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:37,786 INFO L513 BasicCegarLoop]: trace histogram [41, 40, 25, 25, 25, 25, 25, 25, 24, 24, 16, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:37,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-11-09 08:45:37,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:37,987 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:45:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1734274497, now seen corresponding path program 12 times [2021-11-09 08:45:37,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:37,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32018630] [2021-11-09 08:45:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:37,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:38,064 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:45:38,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340655076] [2021-11-09 08:45:38,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:45:38,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:38,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:45:38,066 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:45:38,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-09 08:45:43,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-09 08:45:43,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:45:43,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-09 08:45:43,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:45:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 1798 proven. 305 refuted. 0 times theorem prover too weak. 3015 trivial. 0 not checked. [2021-11-09 08:45:45,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:45,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32018630] [2021-11-09 08:45:45,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:45:45,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340655076] [2021-11-09 08:45:45,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340655076] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:45:45,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:45:45,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-09 08:45:45,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018907387] [2021-11-09 08:45:45,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 08:45:45,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:45,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 08:45:45,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:45:45,456 INFO L87 Difference]: Start difference. First operand 1947 states and 2733 transitions. Second operand has 21 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 8 states have call successors, (15), 2 states have call predecessors, (15), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-09 08:45:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:51,273 INFO L93 Difference]: Finished difference Result 3996 states and 5854 transitions. [2021-11-09 08:45:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 08:45:51,274 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 8 states have call successors, (15), 2 states have call predecessors, (15), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) Word has length 408 [2021-11-09 08:45:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:51,281 INFO L225 Difference]: With dead ends: 3996 [2021-11-09 08:45:51,281 INFO L226 Difference]: Without dead ends: 2399 [2021-11-09 08:45:51,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=328, Invalid=1834, Unknown=0, NotChecked=0, Total=2162 [2021-11-09 08:45:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-11-09 08:45:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1947. [2021-11-09 08:45:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1605 states have (on average 1.0996884735202492) internal successors, (1765), 1570 states have internal predecessors, (1765), 256 states have call successors, (256), 78 states have call predecessors, (256), 81 states have return successors, (712), 298 states have call predecessors, (712), 256 states have call successors, (712) [2021-11-09 08:45:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2733 transitions. [2021-11-09 08:45:51,533 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2733 transitions. Word has length 408 [2021-11-09 08:45:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:51,534 INFO L470 AbstractCegarLoop]: Abstraction has 1947 states and 2733 transitions. [2021-11-09 08:45:51,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.3) internal successors, (106), 20 states have internal predecessors, (106), 8 states have call successors, (15), 2 states have call predecessors, (15), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-09 08:45:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2733 transitions. [2021-11-09 08:45:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-09 08:45:51,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:51,538 INFO L513 BasicCegarLoop]: trace histogram [44, 41, 28, 28, 28, 28, 26, 26, 25, 25, 16, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:51,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-11-09 08:45:51,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-11-09 08:45:51,739 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:45:51,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash -627437373, now seen corresponding path program 13 times [2021-11-09 08:45:51,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:51,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666448659] [2021-11-09 08:45:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:51,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:51,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:45:51,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547500444] [2021-11-09 08:45:51,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:45:51,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:45:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:45:51,798 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:45:51,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-09 08:45:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:57,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 08:45:57,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:45:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5758 backedges. 1181 proven. 256 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2021-11-09 08:45:58,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:58,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666448659] [2021-11-09 08:45:58,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:45:58,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547500444] [2021-11-09 08:45:58,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547500444] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:45:58,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:45:58,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-11-09 08:45:58,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318415119] [2021-11-09 08:45:58,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 08:45:58,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:58,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 08:45:58,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:45:58,930 INFO L87 Difference]: Start difference. First operand 1947 states and 2733 transitions. Second operand has 24 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 21 states have internal predecessors, (123), 12 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-09 08:46:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:03,902 INFO L93 Difference]: Finished difference Result 4665 states and 6937 transitions. [2021-11-09 08:46:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-09 08:46:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 21 states have internal predecessors, (123), 12 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) Word has length 428 [2021-11-09 08:46:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:03,911 INFO L225 Difference]: With dead ends: 4665 [2021-11-09 08:46:03,912 INFO L226 Difference]: Without dead ends: 3047 [2021-11-09 08:46:03,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=465, Invalid=2615, Unknown=0, NotChecked=0, Total=3080 [2021-11-09 08:46:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3047 states. [2021-11-09 08:46:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3047 to 2464. [2021-11-09 08:46:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2034 states have (on average 1.112094395280236) internal successors, (2262), 1988 states have internal predecessors, (2262), 334 states have call successors, (334), 87 states have call predecessors, (334), 91 states have return successors, (1032), 388 states have call predecessors, (1032), 334 states have call successors, (1032) [2021-11-09 08:46:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3628 transitions. [2021-11-09 08:46:04,123 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3628 transitions. Word has length 428 [2021-11-09 08:46:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:04,123 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 3628 transitions. [2021-11-09 08:46:04,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 21 states have internal predecessors, (123), 12 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 9 states have call successors, (20) [2021-11-09 08:46:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3628 transitions. [2021-11-09 08:46:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-09 08:46:04,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:04,128 INFO L513 BasicCegarLoop]: trace histogram [46, 44, 28, 28, 28, 28, 27, 27, 26, 26, 18, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:04,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-11-09 08:46:04,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:04,328 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:46:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -410582141, now seen corresponding path program 14 times [2021-11-09 08:46:04,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:04,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461611529] [2021-11-09 08:46:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:04,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:04,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:04,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723292502] [2021-11-09 08:46:04,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:46:04,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:04,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:04,442 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:04,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-09 08:46:09,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:46:09,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:46:09,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 08:46:09,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6289 backedges. 3675 proven. 24 refuted. 0 times theorem prover too weak. 2590 trivial. 0 not checked. [2021-11-09 08:46:10,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:10,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461611529] [2021-11-09 08:46:10,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:10,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723292502] [2021-11-09 08:46:10,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723292502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:46:10,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:46:10,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-09 08:46:10,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292275726] [2021-11-09 08:46:10,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 08:46:10,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:10,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 08:46:10,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:46:10,934 INFO L87 Difference]: Start difference. First operand 2464 states and 3628 transitions. Second operand has 17 states, 16 states have (on average 7.375) internal successors, (118), 17 states have internal predecessors, (118), 8 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) [2021-11-09 08:46:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:12,770 INFO L93 Difference]: Finished difference Result 4366 states and 6459 transitions. [2021-11-09 08:46:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 08:46:12,771 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.375) internal successors, (118), 17 states have internal predecessors, (118), 8 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) Word has length 447 [2021-11-09 08:46:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:12,777 INFO L225 Difference]: With dead ends: 4366 [2021-11-09 08:46:12,777 INFO L226 Difference]: Without dead ends: 2203 [2021-11-09 08:46:12,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2021-11-09 08:46:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-11-09 08:46:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2124. [2021-11-09 08:46:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 1750 states have (on average 1.1051428571428572) internal successors, (1934), 1716 states have internal predecessors, (1934), 282 states have call successors, (282), 87 states have call predecessors, (282), 87 states have return successors, (780), 320 states have call predecessors, (780), 282 states have call successors, (780) [2021-11-09 08:46:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2996 transitions. [2021-11-09 08:46:12,945 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2996 transitions. Word has length 447 [2021-11-09 08:46:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:12,945 INFO L470 AbstractCegarLoop]: Abstraction has 2124 states and 2996 transitions. [2021-11-09 08:46:12,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.375) internal successors, (118), 17 states have internal predecessors, (118), 8 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) [2021-11-09 08:46:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2996 transitions. [2021-11-09 08:46:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-09 08:46:12,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:12,950 INFO L513 BasicCegarLoop]: trace histogram [43, 41, 22, 22, 22, 22, 21, 21, 21, 20, 20, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:46:12,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-11-09 08:46:13,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:13,158 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:46:13,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1476667779, now seen corresponding path program 17 times [2021-11-09 08:46:13,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:13,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566657529] [2021-11-09 08:46:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:13,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:13,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:13,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336348740] [2021-11-09 08:46:13,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:46:13,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:13,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:13,209 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:13,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-11-09 08:46:18,524 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 08:46:18,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:46:18,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-09 08:46:18,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4956 backedges. 1382 proven. 264 refuted. 0 times theorem prover too weak. 3310 trivial. 0 not checked. [2021-11-09 08:46:20,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:20,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566657529] [2021-11-09 08:46:20,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:20,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336348740] [2021-11-09 08:46:20,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336348740] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:46:20,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:46:20,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-09 08:46:20,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680742240] [2021-11-09 08:46:20,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 08:46:20,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 08:46:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:46:20,571 INFO L87 Difference]: Start difference. First operand 2124 states and 2996 transitions. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 20 states have internal predecessors, (127), 9 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (23), 11 states have call predecessors, (23), 8 states have call successors, (23) [2021-11-09 08:46:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:26,080 INFO L93 Difference]: Finished difference Result 5945 states and 9164 transitions. [2021-11-09 08:46:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 08:46:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 20 states have internal predecessors, (127), 9 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (23), 11 states have call predecessors, (23), 8 states have call successors, (23) Word has length 427 [2021-11-09 08:46:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:26,095 INFO L225 Difference]: With dead ends: 5945 [2021-11-09 08:46:26,095 INFO L226 Difference]: Without dead ends: 4449 [2021-11-09 08:46:26,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=274, Invalid=1796, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 08:46:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4449 states. [2021-11-09 08:46:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4449 to 2767. [2021-11-09 08:46:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2289 states have (on average 1.1205766710353866) internal successors, (2565), 2243 states have internal predecessors, (2565), 386 states have call successors, (386), 89 states have call predecessors, (386), 87 states have return successors, (1114), 434 states have call predecessors, (1114), 386 states have call successors, (1114) [2021-11-09 08:46:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4065 transitions. [2021-11-09 08:46:26,410 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4065 transitions. Word has length 427 [2021-11-09 08:46:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:26,410 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 4065 transitions. [2021-11-09 08:46:26,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 20 states have internal predecessors, (127), 9 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (23), 11 states have call predecessors, (23), 8 states have call successors, (23) [2021-11-09 08:46:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4065 transitions. [2021-11-09 08:46:26,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-11-09 08:46:26,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:26,415 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 23, 20, 20, 20, 20, 20, 20, 20, 20, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:46:26,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-11-09 08:46:26,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-11-09 08:46:26,616 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:46:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1156102758, now seen corresponding path program 4 times [2021-11-09 08:46:26,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:26,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288536750] [2021-11-09 08:46:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:26,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:26,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:26,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874866496] [2021-11-09 08:46:26,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:46:26,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:26,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:26,669 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:26,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-11-09 08:46:32,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:46:32,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:46:32,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 08:46:32,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5031 backedges. 1830 proven. 37 refuted. 0 times theorem prover too weak. 3164 trivial. 0 not checked. [2021-11-09 08:46:33,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:33,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288536750] [2021-11-09 08:46:33,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:33,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874866496] [2021-11-09 08:46:33,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874866496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:46:33,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:46:33,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 08:46:33,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375759214] [2021-11-09 08:46:33,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:46:33,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:33,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:46:33,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:46:33,776 INFO L87 Difference]: Start difference. First operand 2767 states and 4065 transitions. Second operand has 11 states, 10 states have (on average 9.8) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-09 08:46:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:35,092 INFO L93 Difference]: Finished difference Result 4936 states and 7461 transitions. [2021-11-09 08:46:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:46:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.8) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 439 [2021-11-09 08:46:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:35,101 INFO L225 Difference]: With dead ends: 4936 [2021-11-09 08:46:35,101 INFO L226 Difference]: Without dead ends: 2797 [2021-11-09 08:46:35,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:46:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2021-11-09 08:46:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2774. [2021-11-09 08:46:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2295 states have (on average 1.1202614379084967) internal successors, (2571), 2248 states have internal predecessors, (2571), 387 states have call successors, (387), 91 states have call predecessors, (387), 87 states have return successors, (1109), 434 states have call predecessors, (1109), 387 states have call successors, (1109) [2021-11-09 08:46:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 4067 transitions. [2021-11-09 08:46:35,395 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 4067 transitions. Word has length 439 [2021-11-09 08:46:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:35,396 INFO L470 AbstractCegarLoop]: Abstraction has 2774 states and 4067 transitions. [2021-11-09 08:46:35,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.8) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-09 08:46:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 4067 transitions. [2021-11-09 08:46:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-09 08:46:35,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:35,400 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 23, 21, 21, 21, 21, 21, 21, 21, 21, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:46:35,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-11-09 08:46:35,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-11-09 08:46:35,601 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:46:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash 488651556, now seen corresponding path program 5 times [2021-11-09 08:46:35,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:35,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650386912] [2021-11-09 08:46:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:35,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:35,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:35,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802145371] [2021-11-09 08:46:35,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:46:35,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:35,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:35,707 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:35,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-09 08:46:41,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 08:46:41,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:46:41,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 08:46:41,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5323 backedges. 352 proven. 253 refuted. 0 times theorem prover too weak. 4718 trivial. 0 not checked. [2021-11-09 08:46:43,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:43,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650386912] [2021-11-09 08:46:43,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:43,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802145371] [2021-11-09 08:46:43,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802145371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:46:43,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:46:43,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 08:46:43,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862569850] [2021-11-09 08:46:43,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:46:43,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:46:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:46:43,043 INFO L87 Difference]: Start difference. First operand 2774 states and 4067 transitions. Second operand has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 7 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2021-11-09 08:46:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:45,134 INFO L93 Difference]: Finished difference Result 3964 states and 5972 transitions. [2021-11-09 08:46:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 08:46:45,136 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 7 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) Word has length 449 [2021-11-09 08:46:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:45,150 INFO L225 Difference]: With dead ends: 3964 [2021-11-09 08:46:45,150 INFO L226 Difference]: Without dead ends: 3963 [2021-11-09 08:46:45,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-11-09 08:46:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2021-11-09 08:46:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 3504. [2021-11-09 08:46:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3504 states, 2911 states have (on average 1.127447612504294) internal successors, (3282), 2841 states have internal predecessors, (3282), 501 states have call successors, (501), 91 states have call predecessors, (501), 87 states have return successors, (1525), 571 states have call predecessors, (1525), 501 states have call successors, (1525) [2021-11-09 08:46:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3504 states to 3504 states and 5308 transitions. [2021-11-09 08:46:45,702 INFO L78 Accepts]: Start accepts. Automaton has 3504 states and 5308 transitions. Word has length 449 [2021-11-09 08:46:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:45,703 INFO L470 AbstractCegarLoop]: Abstraction has 3504 states and 5308 transitions. [2021-11-09 08:46:45,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 7 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2021-11-09 08:46:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3504 states and 5308 transitions. [2021-11-09 08:46:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-09 08:46:45,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:45,710 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 29, 29, 29, 29, 29, 29, 28, 28, 18, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:45,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-11-09 08:46:45,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:45,926 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:46:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1736298703, now seen corresponding path program 15 times [2021-11-09 08:46:45,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:45,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423851962] [2021-11-09 08:46:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:45,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:46,082 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:46:46,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792628740] [2021-11-09 08:46:46,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:46:46,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:46:46,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:46:46,085 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:46:46,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-11-09 08:46:51,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 08:46:51,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:46:51,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-09 08:46:51,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:46:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 1492 proven. 78 refuted. 0 times theorem prover too weak. 5236 trivial. 0 not checked. [2021-11-09 08:46:58,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:58,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423851962] [2021-11-09 08:46:58,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:46:58,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792628740] [2021-11-09 08:46:58,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792628740] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:46:58,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:46:58,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-09 08:46:58,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647971767] [2021-11-09 08:46:58,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 08:46:58,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 08:46:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:46:58,907 INFO L87 Difference]: Start difference. First operand 3504 states and 5308 transitions. Second operand has 17 states, 16 states have (on average 4.4375) internal successors, (71), 17 states have internal predecessors, (71), 3 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-09 08:47:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:11,901 INFO L93 Difference]: Finished difference Result 3630 states and 5840 transitions. [2021-11-09 08:47:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:47:11,902 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.4375) internal successors, (71), 17 states have internal predecessors, (71), 3 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 462 [2021-11-09 08:47:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:11,911 INFO L225 Difference]: With dead ends: 3630 [2021-11-09 08:47:11,911 INFO L226 Difference]: Without dead ends: 3629 [2021-11-09 08:47:11,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:47:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2021-11-09 08:47:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3524. [2021-11-09 08:47:12,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 2927 states have (on average 1.1267509395285276) internal successors, (3298), 2857 states have internal predecessors, (3298), 501 states have call successors, (501), 91 states have call predecessors, (501), 91 states have return successors, (1745), 575 states have call predecessors, (1745), 501 states have call successors, (1745) [2021-11-09 08:47:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 5544 transitions. [2021-11-09 08:47:12,265 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 5544 transitions. Word has length 462 [2021-11-09 08:47:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:12,265 INFO L470 AbstractCegarLoop]: Abstraction has 3524 states and 5544 transitions. [2021-11-09 08:47:12,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.4375) internal successors, (71), 17 states have internal predecessors, (71), 3 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-09 08:47:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 5544 transitions. [2021-11-09 08:47:12,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-09 08:47:12,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:12,269 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 27, 27, 27, 27, 27, 27, 27, 27, 18, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:12,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-11-09 08:47:12,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:12,470 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:47:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash 113286607, now seen corresponding path program 6 times [2021-11-09 08:47:12,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:12,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132939975] [2021-11-09 08:47:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:12,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:12,597 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:12,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615635991] [2021-11-09 08:47:12,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:47:12,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:12,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:12,599 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:12,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-09 08:47:18,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-09 08:47:18,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:47:18,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 08:47:18,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6266 backedges. 1152 proven. 100 refuted. 0 times theorem prover too weak. 5014 trivial. 0 not checked. [2021-11-09 08:47:19,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:19,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132939975] [2021-11-09 08:47:19,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:19,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615635991] [2021-11-09 08:47:19,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615635991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:47:19,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:47:19,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 08:47:19,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234334251] [2021-11-09 08:47:19,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:47:19,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:19,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:47:19,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:47:19,919 INFO L87 Difference]: Start difference. First operand 3524 states and 5544 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-09 08:47:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:21,364 INFO L93 Difference]: Finished difference Result 3606 states and 5748 transitions. [2021-11-09 08:47:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:47:21,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) Word has length 453 [2021-11-09 08:47:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:21,375 INFO L225 Difference]: With dead ends: 3606 [2021-11-09 08:47:21,375 INFO L226 Difference]: Without dead ends: 3605 [2021-11-09 08:47:21,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:47:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-11-09 08:47:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3538. [2021-11-09 08:47:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 2939 states have (on average 1.1262334127254168) internal successors, (3310), 2868 states have internal predecessors, (3310), 503 states have call successors, (503), 91 states have call predecessors, (503), 91 states have return successors, (1750), 578 states have call predecessors, (1750), 503 states have call successors, (1750) [2021-11-09 08:47:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5563 transitions. [2021-11-09 08:47:21,729 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5563 transitions. Word has length 453 [2021-11-09 08:47:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:21,730 INFO L470 AbstractCegarLoop]: Abstraction has 3538 states and 5563 transitions. [2021-11-09 08:47:21,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-09 08:47:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5563 transitions. [2021-11-09 08:47:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2021-11-09 08:47:21,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:21,735 INFO L513 BasicCegarLoop]: trace histogram [52, 51, 28, 28, 28, 28, 28, 28, 27, 27, 24, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-09 08:47:21,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-11-09 08:47:21,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:21,935 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-11-09 08:47:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2087958361, now seen corresponding path program 18 times [2021-11-09 08:47:21,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:21,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46002981] [2021-11-09 08:47:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:21,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:21,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 08:47:21,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154409520] [2021-11-09 08:47:21,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 08:47:21,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:47:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:47:21,992 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:47:21,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0490d536-7e14-4705-97e1-9ff76d254688/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-09 08:47:27,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-11-09 08:47:27,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:47:27,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-09 08:47:27,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:47:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7730 backedges. 1777 proven. 114 refuted. 0 times theorem prover too weak. 5839 trivial. 0 not checked. [2021-11-09 08:47:34,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:34,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46002981] [2021-11-09 08:47:34,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 08:47:34,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154409520] [2021-11-09 08:47:34,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154409520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:47:34,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 08:47:34,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-09 08:47:34,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442862748] [2021-11-09 08:47:34,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 08:47:34,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 08:47:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:47:34,154 INFO L87 Difference]: Start difference. First operand 3538 states and 5563 transitions. Second operand has 20 states, 19 states have (on average 4.315789473684211) internal successors, (82), 20 states have internal predecessors, (82), 4 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14)