./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:28:12,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:28:12,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:28:12,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:28:12,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:28:12,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:28:12,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:28:12,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:28:12,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:28:12,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:28:12,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:28:12,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:28:12,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:28:12,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:28:12,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:28:12,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:28:12,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:28:12,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:28:12,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:28:12,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:28:12,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:28:12,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:28:12,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:28:12,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:28:12,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:28:12,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:28:12,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:28:12,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:28:12,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:28:12,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:28:12,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:28:12,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:28:12,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:28:12,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:28:12,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:28:12,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:28:12,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:28:12,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:28:12,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:28:12,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:28:12,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:28:12,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:28:12,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:28:12,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:28:12,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:28:12,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:28:12,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:28:12,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:28:12,735 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:28:12,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:28:12,735 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:28:12,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:28:12,736 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:28:12,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:28:12,736 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:28:12,737 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:28:12,737 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:28:12,737 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:28:12,737 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:28:12,737 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:28:12,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:28:12,738 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:28:12,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:28:12,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:28:12,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:28:12,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:28:12,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:28:12,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:28:12,741 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:28:12,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:28:12,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:28:12,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:28:12,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:28:12,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:28:12,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:12,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:28:12,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:28:12,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:28:12,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:28:12,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:28:12,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:28:12,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:28:12,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:28:12,743 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_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d [2022-11-19 07:28:12,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:28:13,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:28:13,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:28:13,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:28:13,017 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:28:13,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-11-19 07:28:13,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/618a36fb4/7d1a3ce66eeb4c4c808f13eeb2f5e88e/FLAG89c376282 [2022-11-19 07:28:13,784 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:28:13,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-11-19 07:28:13,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/618a36fb4/7d1a3ce66eeb4c4c808f13eeb2f5e88e/FLAG89c376282 [2022-11-19 07:28:13,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/618a36fb4/7d1a3ce66eeb4c4c808f13eeb2f5e88e [2022-11-19 07:28:13,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:28:13,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:28:13,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:13,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:28:13,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:28:13,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:13" (1/1) ... [2022-11-19 07:28:13,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b521c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:13, skipping insertion in model container [2022-11-19 07:28:13,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:13" (1/1) ... [2022-11-19 07:28:14,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:28:14,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:28:14,733 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-11-19 07:28:14,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:14,753 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:28:14,880 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-11-19 07:28:14,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:14,915 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:28:14,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14 WrapperNode [2022-11-19 07:28:14,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:14,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:14,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:28:14,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:28:14,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:14,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,010 INFO L138 Inliner]: procedures = 134, calls = 227, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1064 [2022-11-19 07:28:15,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:15,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:28:15,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:28:15,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:28:15,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:28:15,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:28:15,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:28:15,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:28:15,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (1/1) ... [2022-11-19 07:28:15,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:15,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:28:15,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:28:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:28:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:28:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:28:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:28:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:28:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:28:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:28:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:28:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:28:15,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:28:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:28:15,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:28:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:28:15,210 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:28:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:28:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:28:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:28:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:28:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:28:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:28:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:28:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:28:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:28:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:28:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:28:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:28:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:28:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:28:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:28:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:28:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:28:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:28:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:28:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:28:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:28:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:28:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:28:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:28:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:28:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:28:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:28:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:28:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:28:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:28:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:28:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:28:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:28:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:28:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:28:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:28:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:28:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:28:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:28:15,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:28:15,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:28:16,623 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:28:17,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:28:17,226 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:28:17,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:17 BoogieIcfgContainer [2022-11-19 07:28:17,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:28:17,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:28:17,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:28:17,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:28:17,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:28:13" (1/3) ... [2022-11-19 07:28:17,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31088317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:17, skipping insertion in model container [2022-11-19 07:28:17,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:14" (2/3) ... [2022-11-19 07:28:17,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31088317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:17, skipping insertion in model container [2022-11-19 07:28:17,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:17" (3/3) ... [2022-11-19 07:28:17,240 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2022-11-19 07:28:17,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:28:17,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:28:17,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:28:17,319 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7711cf42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:28:17,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:28:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-19 07:28:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 07:28:17,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:17,339 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:17,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 772251337, now seen corresponding path program 1 times [2022-11-19 07:28:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:17,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580510006] [2022-11-19 07:28:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:17,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:17,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:17,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580510006] [2022-11-19 07:28:17,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580510006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:17,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:17,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:28:17,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803948402] [2022-11-19 07:28:17,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:28:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:28:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:28:17,912 INFO L87 Difference]: Start difference. First operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:18,055 INFO L93 Difference]: Finished difference Result 335 states and 442 transitions. [2022-11-19 07:28:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:28:18,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2022-11-19 07:28:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:18,079 INFO L225 Difference]: With dead ends: 335 [2022-11-19 07:28:18,079 INFO L226 Difference]: Without dead ends: 206 [2022-11-19 07:28:18,089 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:28:18,093 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:18,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:18,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-19 07:28:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-11-19 07:28:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 122 states have internal predecessors, (152), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-19 07:28:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2022-11-19 07:28:18,164 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 88 [2022-11-19 07:28:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:18,165 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2022-11-19 07:28:18,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2022-11-19 07:28:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:28:18,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:18,170 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:18,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:28:18,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash 158684575, now seen corresponding path program 1 times [2022-11-19 07:28:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:18,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121593173] [2022-11-19 07:28:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:18,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:18,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121593173] [2022-11-19 07:28:18,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121593173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:18,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:18,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:28:18,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985775116] [2022-11-19 07:28:18,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:18,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:28:18,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:18,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:28:18,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:18,454 INFO L87 Difference]: Start difference. First operand 206 states and 275 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:18,675 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2022-11-19 07:28:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:28:18,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2022-11-19 07:28:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:18,678 INFO L225 Difference]: With dead ends: 331 [2022-11-19 07:28:18,679 INFO L226 Difference]: Without dead ends: 208 [2022-11-19 07:28:18,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:18,681 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:18,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-19 07:28:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-19 07:28:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 124 states have internal predecessors, (154), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-19 07:28:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 277 transitions. [2022-11-19 07:28:18,700 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 277 transitions. Word has length 89 [2022-11-19 07:28:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:18,701 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 277 transitions. [2022-11-19 07:28:18,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 277 transitions. [2022-11-19 07:28:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:28:18,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:18,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:18,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:28:18,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1040893683, now seen corresponding path program 1 times [2022-11-19 07:28:18,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:18,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098967471] [2022-11-19 07:28:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:18,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:18,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098967471] [2022-11-19 07:28:18,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098967471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:18,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:18,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:28:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665182087] [2022-11-19 07:28:18,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:18,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:28:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:18,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:28:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:18,904 INFO L87 Difference]: Start difference. First operand 208 states and 277 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:19,034 INFO L93 Difference]: Finished difference Result 446 states and 613 transitions. [2022-11-19 07:28:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:28:19,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2022-11-19 07:28:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:19,037 INFO L225 Difference]: With dead ends: 446 [2022-11-19 07:28:19,038 INFO L226 Difference]: Without dead ends: 256 [2022-11-19 07:28:19,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:19,040 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 57 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:19,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 485 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-19 07:28:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2022-11-19 07:28:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 156 states have internal predecessors, (207), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-19 07:28:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2022-11-19 07:28:19,064 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 94 [2022-11-19 07:28:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:19,065 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2022-11-19 07:28:19,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:28:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2022-11-19 07:28:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 07:28:19,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:19,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:28:19,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:28:19,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1815040580, now seen corresponding path program 1 times [2022-11-19 07:28:19,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:19,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097757010] [2022-11-19 07:28:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:19,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:19,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:19,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097757010] [2022-11-19 07:28:19,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097757010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:28:19,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920095441] [2022-11-19 07:28:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:19,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:19,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:19,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:19,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:28:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:19,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:28:19,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:19,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:28:20,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920095441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:20,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [726346377] [2022-11-19 07:28:20,111 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-19 07:28:20,111 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:20,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:20,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:20,126 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:59,305 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:28:59,635 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:28:59,966 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 477 for LOIs [2022-11-19 07:29:10,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:29:10,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:10,713 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:29:10,717 INFO L158 Benchmark]: Toolchain (without parser) took 56737.28ms. Allocated memory was 130.0MB in the beginning and 587.2MB in the end (delta: 457.2MB). Free memory was 92.9MB in the beginning and 259.8MB in the end (delta: -166.9MB). Peak memory consumption was 356.3MB. Max. memory is 16.1GB. [2022-11-19 07:29:10,717 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory was 43.2MB in the beginning and 43.2MB in the end (delta: 40.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:29:10,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 931.87ms. Allocated memory is still 130.0MB. Free memory was 92.6MB in the beginning and 76.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:29:10,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.37ms. Allocated memory is still 130.0MB. Free memory was 76.9MB in the beginning and 70.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:29:10,718 INFO L158 Benchmark]: Boogie Preprocessor took 84.72ms. Allocated memory is still 130.0MB. Free memory was 70.6MB in the beginning and 65.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:29:10,719 INFO L158 Benchmark]: RCFGBuilder took 2133.90ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 65.6MB in the beginning and 88.4MB in the end (delta: -22.8MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2022-11-19 07:29:10,719 INFO L158 Benchmark]: TraceAbstraction took 53482.78ms. Allocated memory was 165.7MB in the beginning and 587.2MB in the end (delta: 421.5MB). Free memory was 87.4MB in the beginning and 259.8MB in the end (delta: -172.4MB). Peak memory consumption was 315.5MB. Max. memory is 16.1GB. [2022-11-19 07:29:10,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory was 43.2MB in the beginning and 43.2MB in the end (delta: 40.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 931.87ms. Allocated memory is still 130.0MB. Free memory was 92.6MB in the beginning and 76.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.37ms. Allocated memory is still 130.0MB. Free memory was 76.9MB in the beginning and 70.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.72ms. Allocated memory is still 130.0MB. Free memory was 70.6MB in the beginning and 65.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2133.90ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 65.6MB in the beginning and 88.4MB in the end (delta: -22.8MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * TraceAbstraction took 53482.78ms. Allocated memory was 165.7MB in the beginning and 587.2MB in the end (delta: 421.5MB). Free memory was 87.4MB in the beginning and 259.8MB in the end (delta: -172.4MB). Peak memory consumption was 315.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:29:10,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:29:12,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:29:12,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:29:12,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:29:12,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:29:12,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:29:12,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:29:12,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:29:12,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:29:13,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:29:13,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:29:13,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:29:13,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:29:13,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:29:13,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:29:13,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:29:13,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:29:13,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:29:13,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:29:13,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:29:13,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:29:13,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:29:13,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:29:13,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:29:13,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:29:13,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:29:13,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:29:13,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:29:13,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:29:13,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:29:13,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:29:13,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:29:13,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:29:13,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:29:13,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:29:13,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:29:13,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:29:13,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:29:13,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:29:13,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:29:13,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:29:13,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:29:13,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:29:13,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:29:13,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:29:13,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:29:13,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:29:13,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:29:13,096 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:29:13,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:29:13,097 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:29:13,097 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:29:13,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:29:13,097 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:29:13,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:29:13,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:29:13,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:29:13,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:29:13,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:29:13,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:29:13,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:29:13,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:29:13,100 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:29:13,100 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:29:13,100 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:29:13,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:29:13,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:29:13,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:29:13,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:29:13,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:29:13,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:29:13,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:29:13,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:29:13,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:29:13,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:29:13,103 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:29:13,103 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:29:13,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:29:13,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:29:13,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:29:13,105 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d [2022-11-19 07:29:13,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:29:13,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:29:13,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:29:13,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:29:13,551 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:29:13,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-11-19 07:29:13,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/74d6a1983/b0914626eedf41feae59949dc81936c6/FLAG62acaac2b [2022-11-19 07:29:14,330 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:29:14,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2022-11-19 07:29:14,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/74d6a1983/b0914626eedf41feae59949dc81936c6/FLAG62acaac2b [2022-11-19 07:29:14,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/data/74d6a1983/b0914626eedf41feae59949dc81936c6 [2022-11-19 07:29:14,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:29:14,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:29:14,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:29:14,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:29:14,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:29:14,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:29:14" (1/1) ... [2022-11-19 07:29:14,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322b4b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:14, skipping insertion in model container [2022-11-19 07:29:14,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:29:14" (1/1) ... [2022-11-19 07:29:14,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:29:14,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:29:15,363 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-11-19 07:29:15,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:29:15,382 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:29:15,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:29:15,569 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-11-19 07:29:15,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:29:15,577 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:29:15,650 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-11-19 07:29:15,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:29:15,683 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:29:15,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15 WrapperNode [2022-11-19 07:29:15,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:29:15,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:29:15,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:29:15,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:29:15,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,775 INFO L138 Inliner]: procedures = 136, calls = 227, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1005 [2022-11-19 07:29:15,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:29:15,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:29:15,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:29:15,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:29:15,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:29:15,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:29:15,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:29:15,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:29:15,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (1/1) ... [2022-11-19 07:29:15,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:29:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:15,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:29:15,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:29:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:29:16,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:29:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:29:16,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:29:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:29:16,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:29:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:29:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:29:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:29:16,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:29:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:29:16,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:29:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:29:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:29:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:29:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:29:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:29:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:29:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:29:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:29:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:29:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:29:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:29:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:29:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:29:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:29:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:29:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:29:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:29:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:29:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:29:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:29:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:29:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:29:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:29:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:29:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:29:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:29:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:29:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:29:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:29:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:29:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:29:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:29:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:29:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:29:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:29:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:29:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:29:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:29:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:29:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:29:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:29:16,354 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:29:16,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:29:17,366 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:29:17,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:29:17,376 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:29:17,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:29:17 BoogieIcfgContainer [2022-11-19 07:29:17,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:29:17,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:29:17,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:29:17,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:29:17,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:29:14" (1/3) ... [2022-11-19 07:29:17,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b69c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:29:17, skipping insertion in model container [2022-11-19 07:29:17,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:15" (2/3) ... [2022-11-19 07:29:17,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b69c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:29:17, skipping insertion in model container [2022-11-19 07:29:17,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:29:17" (3/3) ... [2022-11-19 07:29:17,409 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2022-11-19 07:29:17,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:29:17,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:29:17,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:29:17,491 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3367329a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:29:17,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:29:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-19 07:29:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-19 07:29:17,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:17,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:17,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:17,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1565848355, now seen corresponding path program 1 times [2022-11-19 07:29:17,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:17,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489335750] [2022-11-19 07:29:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:17,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:17,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:17,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:17,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:29:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:18,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:29:18,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 07:29:18,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:18,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:18,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489335750] [2022-11-19 07:29:18,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489335750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:18,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:18,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:29:18,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652242926] [2022-11-19 07:29:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:18,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:29:18,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:18,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:29:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:29:18,165 INFO L87 Difference]: Start difference. First operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:18,232 INFO L93 Difference]: Finished difference Result 611 states and 886 transitions. [2022-11-19 07:29:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:29:18,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2022-11-19 07:29:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:18,250 INFO L225 Difference]: With dead ends: 611 [2022-11-19 07:29:18,254 INFO L226 Difference]: Without dead ends: 378 [2022-11-19 07:29:18,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:29:18,267 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:18,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-19 07:29:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-11-19 07:29:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 291 states have (on average 1.4948453608247423) internal successors, (435), 294 states have internal predecessors, (435), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-19 07:29:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 558 transitions. [2022-11-19 07:29:18,342 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 558 transitions. Word has length 139 [2022-11-19 07:29:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:18,343 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 558 transitions. [2022-11-19 07:29:18,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 558 transitions. [2022-11-19 07:29:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-19 07:29:18,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:18,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:18,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:18,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:18,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1479941590, now seen corresponding path program 1 times [2022-11-19 07:29:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:18,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498945223] [2022-11-19 07:29:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:18,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:18,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:18,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:18,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:29:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:18,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:29:18,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 07:29:19,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:19,041 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:19,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498945223] [2022-11-19 07:29:19,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498945223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:19,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:19,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:19,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728529603] [2022-11-19 07:29:19,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:19,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:19,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:19,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:19,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:19,046 INFO L87 Difference]: Start difference. First operand 378 states and 558 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:19,213 INFO L93 Difference]: Finished difference Result 747 states and 1106 transitions. [2022-11-19 07:29:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2022-11-19 07:29:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:19,231 INFO L225 Difference]: With dead ends: 747 [2022-11-19 07:29:19,231 INFO L226 Difference]: Without dead ends: 380 [2022-11-19 07:29:19,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:19,241 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 133 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:19,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2043 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:19,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-19 07:29:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2022-11-19 07:29:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 292 states have (on average 1.4931506849315068) internal successors, (436), 296 states have internal predecessors, (436), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2022-11-19 07:29:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 561 transitions. [2022-11-19 07:29:19,286 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 561 transitions. Word has length 140 [2022-11-19 07:29:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:19,287 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 561 transitions. [2022-11-19 07:29:19,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 561 transitions. [2022-11-19 07:29:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-19 07:29:19,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:19,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:19,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:19,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:19,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -824255159, now seen corresponding path program 1 times [2022-11-19 07:29:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:19,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368688189] [2022-11-19 07:29:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:19,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:19,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:19,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:19,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:29:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:19,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:29:19,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 07:29:19,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:19,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:19,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368688189] [2022-11-19 07:29:19,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368688189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:19,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:19,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:19,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525184494] [2022-11-19 07:29:19,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:19,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:19,983 INFO L87 Difference]: Start difference. First operand 380 states and 561 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:20,131 INFO L93 Difference]: Finished difference Result 749 states and 1110 transitions. [2022-11-19 07:29:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:20,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2022-11-19 07:29:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:20,136 INFO L225 Difference]: With dead ends: 749 [2022-11-19 07:29:20,136 INFO L226 Difference]: Without dead ends: 382 [2022-11-19 07:29:20,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:20,139 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 132 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:20,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2032 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-19 07:29:20,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-19 07:29:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 293 states have (on average 1.4914675767918089) internal successors, (437), 298 states have internal predecessors, (437), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2022-11-19 07:29:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 566 transitions. [2022-11-19 07:29:20,192 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 566 transitions. Word has length 141 [2022-11-19 07:29:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:20,194 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 566 transitions. [2022-11-19 07:29:20,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 566 transitions. [2022-11-19 07:29:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-19 07:29:20,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:20,200 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:20,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:20,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:20,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:20,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2015273453, now seen corresponding path program 1 times [2022-11-19 07:29:20,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:20,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182888102] [2022-11-19 07:29:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:20,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:20,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:20,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:20,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:29:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:20,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:29:20,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:29:20,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:20,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:20,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182888102] [2022-11-19 07:29:20,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182888102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:20,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:20,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:20,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951850766] [2022-11-19 07:29:20,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:20,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:20,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:20,876 INFO L87 Difference]: Start difference. First operand 382 states and 566 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:20,978 INFO L93 Difference]: Finished difference Result 741 states and 1100 transitions. [2022-11-19 07:29:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:20,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2022-11-19 07:29:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:20,985 INFO L225 Difference]: With dead ends: 741 [2022-11-19 07:29:20,985 INFO L226 Difference]: Without dead ends: 382 [2022-11-19 07:29:20,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:20,993 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 131 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:20,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 2046 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-19 07:29:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-19 07:29:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 293 states have (on average 1.4914675767918089) internal successors, (437), 298 states have internal predecessors, (437), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (66), 61 states have call predecessors, (66), 61 states have call successors, (66) [2022-11-19 07:29:21,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 565 transitions. [2022-11-19 07:29:21,043 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 565 transitions. Word has length 142 [2022-11-19 07:29:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:21,044 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 565 transitions. [2022-11-19 07:29:21,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 565 transitions. [2022-11-19 07:29:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 07:29:21,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:21,048 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:21,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:21,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:21,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:21,272 INFO L85 PathProgramCache]: Analyzing trace with hash 898347668, now seen corresponding path program 2 times [2022-11-19 07:29:21,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:21,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559293627] [2022-11-19 07:29:21,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:29:21,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:21,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:21,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:21,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:29:21,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-19 07:29:21,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:29:21,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:21,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-19 07:29:21,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:21,586 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:21,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559293627] [2022-11-19 07:29:21,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559293627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:21,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:21,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345372243] [2022-11-19 07:29:21,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:21,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:21,589 INFO L87 Difference]: Start difference. First operand 382 states and 565 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:21,630 INFO L93 Difference]: Finished difference Result 605 states and 874 transitions. [2022-11-19 07:29:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:21,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2022-11-19 07:29:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:21,633 INFO L225 Difference]: With dead ends: 605 [2022-11-19 07:29:21,633 INFO L226 Difference]: Without dead ends: 385 [2022-11-19 07:29:21,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:21,635 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:21,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1110 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-19 07:29:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2022-11-19 07:29:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 295 states have (on average 1.488135593220339) internal successors, (439), 300 states have internal predecessors, (439), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (66), 61 states have call predecessors, (66), 61 states have call successors, (66) [2022-11-19 07:29:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 567 transitions. [2022-11-19 07:29:21,668 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 567 transitions. Word has length 143 [2022-11-19 07:29:21,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:21,670 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 567 transitions. [2022-11-19 07:29:21,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:21,670 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 567 transitions. [2022-11-19 07:29:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-19 07:29:21,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:21,674 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:21,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-19 07:29:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:21,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1681302114, now seen corresponding path program 1 times [2022-11-19 07:29:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:21,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14564296] [2022-11-19 07:29:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:21,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:21,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:21,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:21,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:29:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:22,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:29:22,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:29:22,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:22,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:22,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14564296] [2022-11-19 07:29:22,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14564296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:22,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:22,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48993331] [2022-11-19 07:29:22,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:22,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:22,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:22,308 INFO L87 Difference]: Start difference. First operand 384 states and 567 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:22,415 INFO L93 Difference]: Finished difference Result 747 states and 1107 transitions. [2022-11-19 07:29:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:22,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2022-11-19 07:29:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:22,420 INFO L225 Difference]: With dead ends: 747 [2022-11-19 07:29:22,420 INFO L226 Difference]: Without dead ends: 386 [2022-11-19 07:29:22,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:22,426 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 129 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:22,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 2048 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-19 07:29:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-11-19 07:29:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 296 states have (on average 1.4864864864864864) internal successors, (440), 302 states have internal predecessors, (440), 62 states have call successors, (62), 24 states have call predecessors, (62), 27 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2022-11-19 07:29:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 570 transitions. [2022-11-19 07:29:22,467 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 570 transitions. Word has length 152 [2022-11-19 07:29:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:22,467 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 570 transitions. [2022-11-19 07:29:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 570 transitions. [2022-11-19 07:29:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-19 07:29:22,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:22,473 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:22,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:22,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:22,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1312789604, now seen corresponding path program 1 times [2022-11-19 07:29:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:22,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65336366] [2022-11-19 07:29:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:22,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:22,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:22,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:22,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:29:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:23,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:29:23,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:29:23,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:23,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:23,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65336366] [2022-11-19 07:29:23,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65336366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:23,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:23,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:23,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715786420] [2022-11-19 07:29:23,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:23,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:23,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:23,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:23,209 INFO L87 Difference]: Start difference. First operand 386 states and 570 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:23,345 INFO L93 Difference]: Finished difference Result 745 states and 1102 transitions. [2022-11-19 07:29:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:23,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2022-11-19 07:29:23,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:23,349 INFO L225 Difference]: With dead ends: 745 [2022-11-19 07:29:23,350 INFO L226 Difference]: Without dead ends: 386 [2022-11-19 07:29:23,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:23,353 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 130 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:23,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 2035 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-19 07:29:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-11-19 07:29:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 296 states have (on average 1.4864864864864864) internal successors, (440), 302 states have internal predecessors, (440), 62 states have call successors, (62), 24 states have call predecessors, (62), 27 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2022-11-19 07:29:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 569 transitions. [2022-11-19 07:29:23,390 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 569 transitions. Word has length 153 [2022-11-19 07:29:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:23,391 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 569 transitions. [2022-11-19 07:29:23,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 569 transitions. [2022-11-19 07:29:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 07:29:23,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:23,395 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:23,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:23,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:23,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1444576212, now seen corresponding path program 2 times [2022-11-19 07:29:23,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:23,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691535235] [2022-11-19 07:29:23,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:29:23,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:23,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:23,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:29:23,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:29:23,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:29:23,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:29:23,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:29:24,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 07:29:24,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:24,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691535235] [2022-11-19 07:29:24,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691535235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:24,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [769850155] [2022-11-19 07:29:24,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:29:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:29:24,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:29:24,842 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:29:24,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:29:25,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:29:25,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:29:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:25,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:25,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:25,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [769850155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:25,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:29:25,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 9] total 17 [2022-11-19 07:29:25,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101627717] [2022-11-19 07:29:25,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:25,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:25,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:25,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:25,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:29:25,461 INFO L87 Difference]: Start difference. First operand 386 states and 569 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:25,533 INFO L93 Difference]: Finished difference Result 803 states and 1200 transitions. [2022-11-19 07:29:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:25,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-11-19 07:29:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:25,538 INFO L225 Difference]: With dead ends: 803 [2022-11-19 07:29:25,538 INFO L226 Difference]: Without dead ends: 448 [2022-11-19 07:29:25,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:29:25,540 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 115 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:25,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1089 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:25,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-19 07:29:25,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 440. [2022-11-19 07:29:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 339 states have (on average 1.5044247787610618) internal successors, (510), 345 states have internal predecessors, (510), 73 states have call successors, (73), 24 states have call predecessors, (73), 27 states have return successors, (79), 72 states have call predecessors, (79), 72 states have call successors, (79) [2022-11-19 07:29:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 662 transitions. [2022-11-19 07:29:25,584 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 662 transitions. Word has length 154 [2022-11-19 07:29:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:25,585 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 662 transitions. [2022-11-19 07:29:25,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 662 transitions. [2022-11-19 07:29:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-19 07:29:25,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:25,590 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:25,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:25,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:26,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:29:26,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2139218771, now seen corresponding path program 1 times [2022-11-19 07:29:26,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:26,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223214984] [2022-11-19 07:29:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:26,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:26,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:26,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:26,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:29:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:26,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:29:26,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 07:29:26,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:26,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:26,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223214984] [2022-11-19 07:29:26,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223214984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:26,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:26,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:26,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291162051] [2022-11-19 07:29:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:26,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:26,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:26,422 INFO L87 Difference]: Start difference. First operand 440 states and 662 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:26,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:26,573 INFO L93 Difference]: Finished difference Result 855 states and 1294 transitions. [2022-11-19 07:29:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:26,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2022-11-19 07:29:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:26,578 INFO L225 Difference]: With dead ends: 855 [2022-11-19 07:29:26,578 INFO L226 Difference]: Without dead ends: 442 [2022-11-19 07:29:26,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:26,581 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 128 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:26,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2037 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-19 07:29:26,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2022-11-19 07:29:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 340 states have (on average 1.5029411764705882) internal successors, (511), 347 states have internal predecessors, (511), 73 states have call successors, (73), 24 states have call predecessors, (73), 28 states have return successors, (84), 72 states have call predecessors, (84), 72 states have call successors, (84) [2022-11-19 07:29:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 668 transitions. [2022-11-19 07:29:26,651 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 668 transitions. Word has length 155 [2022-11-19 07:29:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:26,652 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 668 transitions. [2022-11-19 07:29:26,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 668 transitions. [2022-11-19 07:29:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-19 07:29:26,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:26,657 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:26,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:26,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:26,874 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:26,875 INFO L85 PathProgramCache]: Analyzing trace with hash -811085194, now seen corresponding path program 1 times [2022-11-19 07:29:26,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:26,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565087808] [2022-11-19 07:29:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:26,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:26,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:26,878 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:26,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:29:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:27,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:29:27,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:29:27,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:27,346 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:27,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565087808] [2022-11-19 07:29:27,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565087808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:27,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:27,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:29:27,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411682900] [2022-11-19 07:29:27,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:27,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:29:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:29:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:29:27,349 INFO L87 Difference]: Start difference. First operand 442 states and 668 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:27,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:27,543 INFO L93 Difference]: Finished difference Result 1004 states and 1540 transitions. [2022-11-19 07:29:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:29:27,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 156 [2022-11-19 07:29:27,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:27,548 INFO L225 Difference]: With dead ends: 1004 [2022-11-19 07:29:27,548 INFO L226 Difference]: Without dead ends: 591 [2022-11-19 07:29:27,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:27,551 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 647 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:27,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1286 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-19 07:29:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 450. [2022-11-19 07:29:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 347 states have (on average 1.4899135446685878) internal successors, (517), 353 states have internal predecessors, (517), 73 states have call successors, (73), 26 states have call predecessors, (73), 29 states have return successors, (80), 72 states have call predecessors, (80), 72 states have call successors, (80) [2022-11-19 07:29:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 670 transitions. [2022-11-19 07:29:27,627 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 670 transitions. Word has length 156 [2022-11-19 07:29:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:27,627 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 670 transitions. [2022-11-19 07:29:27,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:29:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 670 transitions. [2022-11-19 07:29:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-19 07:29:27,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:27,631 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:27,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:27,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1006078272, now seen corresponding path program 1 times [2022-11-19 07:29:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:27,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607373708] [2022-11-19 07:29:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:27,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:27,849 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:27,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 07:29:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:28,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:29:28,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:28,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:28,356 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:28,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607373708] [2022-11-19 07:29:28,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607373708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:28,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [787318159] [2022-11-19 07:29:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:28,357 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:29:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:29:28,358 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:29:28,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 07:29:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:28,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:29:28,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:29:28,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 07:29:29,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [787318159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:29,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672650552] [2022-11-19 07:29:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:29,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:29,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:29,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:29,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 07:29:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:29,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:29:29,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 07:29:29,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 07:29:30,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672650552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:30,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:29:30,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 9, 9, 9, 9] total 20 [2022-11-19 07:29:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184391763] [2022-11-19 07:29:30,165 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:29:30,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:29:30,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:30,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:29:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:29:30,168 INFO L87 Difference]: Start difference. First operand 450 states and 670 transitions. Second operand has 20 states, 20 states have (on average 10.75) internal successors, (215), 18 states have internal predecessors, (215), 4 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (44), 6 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-19 07:29:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:42,834 INFO L93 Difference]: Finished difference Result 2577 states and 4090 transitions. [2022-11-19 07:29:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-19 07:29:42,835 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.75) internal successors, (215), 18 states have internal predecessors, (215), 4 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (44), 6 states have call predecessors, (44), 4 states have call successors, (44) Word has length 157 [2022-11-19 07:29:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:42,850 INFO L225 Difference]: With dead ends: 2577 [2022-11-19 07:29:42,851 INFO L226 Difference]: Without dead ends: 2357 [2022-11-19 07:29:42,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-11-19 07:29:42,857 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 4179 mSDsluCounter, 3989 mSDsCounter, 0 mSdLazyCounter, 10189 mSolverCounterSat, 1391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4263 SdHoareTripleChecker+Valid, 4411 SdHoareTripleChecker+Invalid, 11580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 10189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:42,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4263 Valid, 4411 Invalid, 11580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1391 Valid, 10189 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-11-19 07:29:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-11-19 07:29:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1585. [2022-11-19 07:29:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1253 states have (on average 1.5466879489225858) internal successors, (1938), 1264 states have internal predecessors, (1938), 272 states have call successors, (272), 51 states have call predecessors, (272), 59 states have return successors, (336), 273 states have call predecessors, (336), 270 states have call successors, (336) [2022-11-19 07:29:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2546 transitions. [2022-11-19 07:29:43,155 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2546 transitions. Word has length 157 [2022-11-19 07:29:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:43,155 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2546 transitions. [2022-11-19 07:29:43,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.75) internal successors, (215), 18 states have internal predecessors, (215), 4 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (44), 6 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-19 07:29:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2546 transitions. [2022-11-19 07:29:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 07:29:43,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:43,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:43,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:43,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:43,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:43,772 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1668704546, now seen corresponding path program 1 times [2022-11-19 07:29:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796892394] [2022-11-19 07:29:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:43,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:43,775 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:43,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:29:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:44,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:44,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:44,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:44,106 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:44,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796892394] [2022-11-19 07:29:44,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796892394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:44,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:44,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:44,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011227795] [2022-11-19 07:29:44,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:44,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:44,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:44,108 INFO L87 Difference]: Start difference. First operand 1585 states and 2546 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:44,514 INFO L93 Difference]: Finished difference Result 3683 states and 6045 transitions. [2022-11-19 07:29:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-11-19 07:29:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:44,535 INFO L225 Difference]: With dead ends: 3683 [2022-11-19 07:29:44,535 INFO L226 Difference]: Without dead ends: 2251 [2022-11-19 07:29:44,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:44,541 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 109 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:44,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1117 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2022-11-19 07:29:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2235. [2022-11-19 07:29:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 1775 states have (on average 1.5707042253521126) internal successors, (2788), 1786 states have internal predecessors, (2788), 400 states have call successors, (400), 51 states have call predecessors, (400), 59 states have return successors, (504), 401 states have call predecessors, (504), 398 states have call successors, (504) [2022-11-19 07:29:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3692 transitions. [2022-11-19 07:29:44,923 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3692 transitions. Word has length 160 [2022-11-19 07:29:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:44,924 INFO L495 AbstractCegarLoop]: Abstraction has 2235 states and 3692 transitions. [2022-11-19 07:29:44,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3692 transitions. [2022-11-19 07:29:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 07:29:44,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:44,941 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:44,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:45,158 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash -403382642, now seen corresponding path program 1 times [2022-11-19 07:29:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:45,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98040448] [2022-11-19 07:29:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:45,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:45,161 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:45,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-19 07:29:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:45,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:45,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:45,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:45,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:45,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98040448] [2022-11-19 07:29:45,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98040448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:45,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:45,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:45,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348977003] [2022-11-19 07:29:45,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:45,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:45,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:45,529 INFO L87 Difference]: Start difference. First operand 2235 states and 3692 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:46,112 INFO L93 Difference]: Finished difference Result 5283 states and 8803 transitions. [2022-11-19 07:29:46,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:46,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-11-19 07:29:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:46,133 INFO L225 Difference]: With dead ends: 5283 [2022-11-19 07:29:46,133 INFO L226 Difference]: Without dead ends: 3307 [2022-11-19 07:29:46,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:46,143 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 107 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:46,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1122 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2022-11-19 07:29:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3291. [2022-11-19 07:29:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2641 states have (on average 1.5789473684210527) internal successors, (4170), 2652 states have internal predecessors, (4170), 590 states have call successors, (590), 51 states have call predecessors, (590), 59 states have return successors, (726), 591 states have call predecessors, (726), 588 states have call successors, (726) [2022-11-19 07:29:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5486 transitions. [2022-11-19 07:29:46,849 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5486 transitions. Word has length 161 [2022-11-19 07:29:46,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:46,849 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 5486 transitions. [2022-11-19 07:29:46,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:46,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5486 transitions. [2022-11-19 07:29:46,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-19 07:29:46,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:46,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:46,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:47,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:47,085 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash 33950928, now seen corresponding path program 1 times [2022-11-19 07:29:47,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:47,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101902556] [2022-11-19 07:29:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:47,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:47,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:47,086 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:47,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-19 07:29:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:47,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:47,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:47,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:47,430 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:47,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101902556] [2022-11-19 07:29:47,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101902556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:47,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:47,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774674306] [2022-11-19 07:29:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:47,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:47,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:47,433 INFO L87 Difference]: Start difference. First operand 3291 states and 5486 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:48,185 INFO L93 Difference]: Finished difference Result 7675 states and 12925 transitions. [2022-11-19 07:29:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2022-11-19 07:29:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:48,221 INFO L225 Difference]: With dead ends: 7675 [2022-11-19 07:29:48,221 INFO L226 Difference]: Without dead ends: 4909 [2022-11-19 07:29:48,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:48,235 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 105 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:48,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2022-11-19 07:29:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4893. [2022-11-19 07:29:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4893 states, 3997 states have (on average 1.5851888916687515) internal successors, (6336), 4008 states have internal predecessors, (6336), 836 states have call successors, (836), 51 states have call predecessors, (836), 59 states have return successors, (1056), 837 states have call predecessors, (1056), 834 states have call successors, (1056) [2022-11-19 07:29:49,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4893 states to 4893 states and 8228 transitions. [2022-11-19 07:29:49,309 INFO L78 Accepts]: Start accepts. Automaton has 4893 states and 8228 transitions. Word has length 162 [2022-11-19 07:29:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:49,310 INFO L495 AbstractCegarLoop]: Abstraction has 4893 states and 8228 transitions. [2022-11-19 07:29:49,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4893 states and 8228 transitions. [2022-11-19 07:29:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 07:29:49,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:49,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:49,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:49,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:49,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2051395981, now seen corresponding path program 1 times [2022-11-19 07:29:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:49,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233904959] [2022-11-19 07:29:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:49,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:49,565 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:49,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 07:29:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:49,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:49,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:49,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:49,896 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233904959] [2022-11-19 07:29:49,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233904959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:49,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:49,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341628122] [2022-11-19 07:29:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:49,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:49,898 INFO L87 Difference]: Start difference. First operand 4893 states and 8228 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:51,321 INFO L93 Difference]: Finished difference Result 11407 states and 19363 transitions. [2022-11-19 07:29:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:51,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-11-19 07:29:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:51,365 INFO L225 Difference]: With dead ends: 11407 [2022-11-19 07:29:51,365 INFO L226 Difference]: Without dead ends: 7471 [2022-11-19 07:29:51,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:51,379 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 103 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:51,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2022-11-19 07:29:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7455. [2022-11-19 07:29:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 6201 states have (on average 1.5890985324947589) internal successors, (9854), 6212 states have internal predecessors, (9854), 1194 states have call successors, (1194), 51 states have call predecessors, (1194), 59 states have return successors, (1554), 1195 states have call predecessors, (1554), 1192 states have call successors, (1554) [2022-11-19 07:29:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 12602 transitions. [2022-11-19 07:29:52,780 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 12602 transitions. Word has length 163 [2022-11-19 07:29:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:52,781 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 12602 transitions. [2022-11-19 07:29:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 12602 transitions. [2022-11-19 07:29:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 07:29:52,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:52,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:52,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:53,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:53,033 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1828024620, now seen corresponding path program 1 times [2022-11-19 07:29:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:53,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399111359] [2022-11-19 07:29:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:53,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:53,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:53,035 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:53,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-19 07:29:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:53,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:53,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:53,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:53,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:53,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399111359] [2022-11-19 07:29:53,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399111359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:53,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:53,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:53,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402675469] [2022-11-19 07:29:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:53,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:53,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:53,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:53,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:53,361 INFO L87 Difference]: Start difference. First operand 7455 states and 12602 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:55,373 INFO L93 Difference]: Finished difference Result 17551 states and 29949 transitions. [2022-11-19 07:29:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 164 [2022-11-19 07:29:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:55,431 INFO L225 Difference]: With dead ends: 17551 [2022-11-19 07:29:55,431 INFO L226 Difference]: Without dead ends: 11709 [2022-11-19 07:29:55,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:55,455 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 101 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:55,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1116 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:29:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11709 states. [2022-11-19 07:29:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11709 to 11693. [2022-11-19 07:29:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11693 states, 9687 states have (on average 1.58294621657892) internal successors, (15334), 9698 states have internal predecessors, (15334), 1946 states have call successors, (1946), 51 states have call predecessors, (1946), 59 states have return successors, (2550), 1947 states have call predecessors, (2550), 1944 states have call successors, (2550) [2022-11-19 07:29:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11693 states to 11693 states and 19830 transitions. [2022-11-19 07:29:57,240 INFO L78 Accepts]: Start accepts. Automaton has 11693 states and 19830 transitions. Word has length 164 [2022-11-19 07:29:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:57,241 INFO L495 AbstractCegarLoop]: Abstraction has 11693 states and 19830 transitions. [2022-11-19 07:29:57,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:29:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 11693 states and 19830 transitions. [2022-11-19 07:29:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-19 07:29:57,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:57,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:57,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-19 07:29:57,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:57,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1429779337, now seen corresponding path program 1 times [2022-11-19 07:29:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:29:57,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478115899] [2022-11-19 07:29:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:57,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:29:57,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:29:57,507 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:29:57,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-19 07:29:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:57,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:29:57,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:29:57,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:29:57,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:29:57,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478115899] [2022-11-19 07:29:57,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478115899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:57,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:57,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838284838] [2022-11-19 07:29:57,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:57,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:57,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:29:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:57,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:57,891 INFO L87 Difference]: Start difference. First operand 11693 states and 19830 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:30:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:01,197 INFO L93 Difference]: Finished difference Result 28673 states and 48873 transitions. [2022-11-19 07:30:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-11-19 07:30:01,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:01,301 INFO L225 Difference]: With dead ends: 28673 [2022-11-19 07:30:01,301 INFO L226 Difference]: Without dead ends: 19387 [2022-11-19 07:30:01,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:01,338 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 99 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:01,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1122 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:30:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19387 states. [2022-11-19 07:30:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19387 to 19371. [2022-11-19 07:30:04,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19371 states, 16153 states have (on average 1.5810066241565035) internal successors, (25538), 16164 states have internal predecessors, (25538), 3158 states have call successors, (3158), 51 states have call predecessors, (3158), 59 states have return successors, (4062), 3159 states have call predecessors, (4062), 3156 states have call successors, (4062) [2022-11-19 07:30:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19371 states to 19371 states and 32758 transitions. [2022-11-19 07:30:04,427 INFO L78 Accepts]: Start accepts. Automaton has 19371 states and 32758 transitions. Word has length 165 [2022-11-19 07:30:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:04,428 INFO L495 AbstractCegarLoop]: Abstraction has 19371 states and 32758 transitions. [2022-11-19 07:30:04,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:30:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 19371 states and 32758 transitions. [2022-11-19 07:30:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-19 07:30:04,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:04,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:04,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:30:04,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:30:04,722 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:04,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:04,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1485541786, now seen corresponding path program 1 times [2022-11-19 07:30:04,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:30:04,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095424191] [2022-11-19 07:30:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:04,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:30:04,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:30:04,725 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:30:04,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ec2214-9cfc-42b9-995a-b54188c65427/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-19 07:30:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:05,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:30:05,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:30:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 07:30:05,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:30:05,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:30:05,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095424191] [2022-11-19 07:30:05,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095424191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:05,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:05,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402021727] [2022-11-19 07:30:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:05,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:30:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:05,147 INFO L87 Difference]: Start difference. First operand 19371 states and 32758 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:30:10,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:10,376 INFO L93 Difference]: Finished difference Result 49881 states and 84805 transitions. [2022-11-19 07:30:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:10,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2022-11-19 07:30:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:10,519 INFO L225 Difference]: With dead ends: 49881 [2022-11-19 07:30:10,519 INFO L226 Difference]: Without dead ends: 33869 [2022-11-19 07:30:10,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:10,560 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 97 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:10,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1131 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:30:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33869 states.