./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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_32036b5f-b349-471f-97a5-471636140abd/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 e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- 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 07:03:08,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:03:08,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:03:08,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:03:08,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:03:08,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:03:08,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:03:08,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:03:08,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:03:08,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:03:08,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:03:08,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:03:08,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:03:08,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:03:08,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:03:08,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:03:08,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:03:08,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:03:08,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:03:08,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:03:08,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:03:08,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:03:08,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:03:08,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:03:08,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:03:08,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:03:08,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:03:08,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:03:08,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:03:08,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:03:08,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:03:08,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:03:08,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:03:08,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:03:08,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:03:08,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:03:08,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:03:08,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:03:08,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:03:08,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:03:08,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:03:08,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:03:08,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:03:08,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:03:08,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:03:08,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:03:08,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:03:08,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:03:08,772 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:03:08,772 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:03:08,772 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:03:08,772 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:03:08,772 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:03:08,773 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:03:08,773 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:03:08,773 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:03:08,773 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:03:08,773 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:03:08,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:03:08,774 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:03:08,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:03:08,775 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:03:08,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:03:08,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:03:08,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:03:08,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:03:08,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:03:08,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:03:08,776 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:03:08,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:03:08,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:03:08,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:03:08,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:03:08,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:03:08,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:08,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:03:08,778 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:03:08,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:03:08,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:03:08,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:03:08,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:03:08,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:03:08,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:03:08,779 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_32036b5f-b349-471f-97a5-471636140abd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2022-11-19 07:03:09,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:03:09,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:03:09,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:03:09,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:03:09,159 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:03:09,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-19 07:03:09,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/8d5facbbb/f7557c3339274a4aa88e9cd7b8291a90/FLAG280e3dea6 [2022-11-19 07:03:09,916 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:03:09,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-19 07:03:09,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/8d5facbbb/f7557c3339274a4aa88e9cd7b8291a90/FLAG280e3dea6 [2022-11-19 07:03:10,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/8d5facbbb/f7557c3339274a4aa88e9cd7b8291a90 [2022-11-19 07:03:10,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:03:10,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:03:10,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:10,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:03:10,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:03:10,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:10" (1/1) ... [2022-11-19 07:03:10,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f75533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:10, skipping insertion in model container [2022-11-19 07:03:10,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:10" (1/1) ... [2022-11-19 07:03:10,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:03:10,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:03:10,648 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_32036b5f-b349-471f-97a5-471636140abd/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-19 07:03:10,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:10,964 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:03:11,039 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_32036b5f-b349-471f-97a5-471636140abd/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-19 07:03:11,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:11,125 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:03:11,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11 WrapperNode [2022-11-19 07:03:11,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:11,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:11,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:03:11,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:03:11,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,250 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1006 [2022-11-19 07:03:11,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:11,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:03:11,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:03:11,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:03:11,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:03:11,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:03:11,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:03:11,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:03:11,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (1/1) ... [2022-11-19 07:03:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:11,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:11,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:03:11,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:03:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:03:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:03:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:03:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:03:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:03:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:03:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:03:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:03:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:03:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:03:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:03:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:03:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:03:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:03:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:03:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:03:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:03:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:03:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:03:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:03:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:03:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:03:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:03:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:03:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:03:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:03:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:03:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:03:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:03:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:03:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:03:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:03:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:03:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:03:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:03:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:03:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:03:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:03:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:03:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:03:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:03:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:03:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:03:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:03:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:03:11,844 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:03:11,847 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:03:13,000 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:03:13,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:03:13,631 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:03:13,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:13 BoogieIcfgContainer [2022-11-19 07:03:13,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:03:13,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:03:13,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:03:13,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:03:13,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:03:10" (1/3) ... [2022-11-19 07:03:13,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7505c003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:13, skipping insertion in model container [2022-11-19 07:03:13,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:11" (2/3) ... [2022-11-19 07:03:13,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7505c003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:13, skipping insertion in model container [2022-11-19 07:03:13,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:13" (3/3) ... [2022-11-19 07:03:13,649 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2022-11-19 07:03:13,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:03:13,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:03:13,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:03:13,788 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;@1ae14a1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:03:13,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:03:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 106 states have (on average 1.330188679245283) internal successors, (141), 110 states have internal predecessors, (141), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-19 07:03:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:03:13,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:13,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 07:03:13,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash 929185348, now seen corresponding path program 1 times [2022-11-19 07:03:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:13,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163384756] [2022-11-19 07:03:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:13,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:03:14,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:14,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163384756] [2022-11-19 07:03:14,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163384756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:14,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:14,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:03:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825461026] [2022-11-19 07:03:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:03:14,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:03:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:03:14,376 INFO L87 Difference]: Start difference. First operand has 182 states, 106 states have (on average 1.330188679245283) internal successors, (141), 110 states have internal predecessors, (141), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:03:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:14,567 INFO L93 Difference]: Finished difference Result 281 states and 376 transitions. [2022-11-19 07:03:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:03:14,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 72 [2022-11-19 07:03:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:14,589 INFO L225 Difference]: With dead ends: 281 [2022-11-19 07:03:14,592 INFO L226 Difference]: Without dead ends: 179 [2022-11-19 07:03:14,602 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 07:03:14,607 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:14,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:03:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-19 07:03:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-19 07:03:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 107 states have internal predecessors, (135), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-19 07:03:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 242 transitions. [2022-11-19 07:03:14,704 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 242 transitions. Word has length 72 [2022-11-19 07:03:14,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:14,706 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 242 transitions. [2022-11-19 07:03:14,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:03:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 242 transitions. [2022-11-19 07:03:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:03:14,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:14,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 07:03:14,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:03:14,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1244535891, now seen corresponding path program 1 times [2022-11-19 07:03:14,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:14,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949343489] [2022-11-19 07:03:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:03:14,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:14,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949343489] [2022-11-19 07:03:14,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949343489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:14,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:14,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:03:14,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243007554] [2022-11-19 07:03:14,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:14,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:14,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:14,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:14,988 INFO L87 Difference]: Start difference. First operand 179 states and 242 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:03:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:15,155 INFO L93 Difference]: Finished difference Result 277 states and 364 transitions. [2022-11-19 07:03:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:15,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 73 [2022-11-19 07:03:15,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:15,159 INFO L225 Difference]: With dead ends: 277 [2022-11-19 07:03:15,159 INFO L226 Difference]: Without dead ends: 181 [2022-11-19 07:03:15,160 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 07:03:15,162 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:15,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 415 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:03:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-19 07:03:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-19 07:03:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 106 states have (on average 1.2924528301886793) internal successors, (137), 109 states have internal predecessors, (137), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-19 07:03:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 244 transitions. [2022-11-19 07:03:15,185 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 244 transitions. Word has length 73 [2022-11-19 07:03:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:15,185 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 244 transitions. [2022-11-19 07:03:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:03:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 244 transitions. [2022-11-19 07:03:15,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 07:03:15,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:15,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:15,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:03:15,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1473731100, now seen corresponding path program 1 times [2022-11-19 07:03:15,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316773350] [2022-11-19 07:03:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:03:15,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316773350] [2022-11-19 07:03:15,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316773350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:15,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:15,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:03:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868661606] [2022-11-19 07:03:15,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:15,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:15,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:15,385 INFO L87 Difference]: Start difference. First operand 181 states and 244 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:03:15,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:15,539 INFO L93 Difference]: Finished difference Result 392 states and 547 transitions. [2022-11-19 07:03:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:15,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 78 [2022-11-19 07:03:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:15,543 INFO L225 Difference]: With dead ends: 392 [2022-11-19 07:03:15,543 INFO L226 Difference]: Without dead ends: 229 [2022-11-19 07:03:15,545 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 07:03:15,546 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:15,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 431 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:03:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-19 07:03:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2022-11-19 07:03:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.3768115942028984) internal successors, (190), 141 states have internal predecessors, (190), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-19 07:03:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 319 transitions. [2022-11-19 07:03:15,575 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 319 transitions. Word has length 78 [2022-11-19 07:03:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:15,576 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 319 transitions. [2022-11-19 07:03:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:03:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 319 transitions. [2022-11-19 07:03:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 07:03:15,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:15,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:15,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:03:15,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash 64739026, now seen corresponding path program 1 times [2022-11-19 07:03:15,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:15,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999802139] [2022-11-19 07:03:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:03:16,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:16,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999802139] [2022-11-19 07:03:16,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999802139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:03:16,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610418170] [2022-11-19 07:03:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:16,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:03:16,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:16,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:03:16,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:03:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:16,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:03:16,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:03:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:03:16,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:03:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:03:16,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610418170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:03:16,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1727764580] [2022-11-19 07:03:16,736 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-19 07:03:16,736 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:03:16,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:03:16,748 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:03:16,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:04:02,241 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:04:02,580 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:04:02,982 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:04:36,636 WARN L233 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 468 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:50,582 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 490 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:57,012 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:03,542 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 512 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:25,674 WARN L233 SmtUtils]: Spent 21.79s on a formula simplification. DAG size of input: 592 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:48,323 WARN L233 SmtUtils]: Spent 22.23s on a formula simplification. DAG size of input: 595 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:54,882 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 355 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:01,557 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 353 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:08,356 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 549 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:08,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1727764580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:08,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:06:08,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-19 07:06:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635861019] [2022-11-19 07:06:08,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:08,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:06:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:08,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:06:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:06:08,372 INFO L87 Difference]: Start difference. First operand 224 states and 319 transitions. Second operand has 21 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-19 07:06:20,246 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 575 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:30,689 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 575 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:43,553 WARN L233 SmtUtils]: Spent 12.52s on a formula simplification. DAG size of input: 600 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:06:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:57,868 INFO L93 Difference]: Finished difference Result 531 states and 806 transitions. [2022-11-19 07:06:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-19 07:06:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 79 [2022-11-19 07:06:57,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:57,873 INFO L225 Difference]: With dead ends: 531 [2022-11-19 07:06:57,873 INFO L226 Difference]: Without dead ends: 325 [2022-11-19 07:06:57,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 163.2s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:06:57,876 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 145 mSDsluCounter, 3185 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:57,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 3413 Invalid, 2079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-19 07:06:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-19 07:06:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 252. [2022-11-19 07:06:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 165 states have (on average 1.387878787878788) internal successors, (229), 168 states have internal predecessors, (229), 65 states have call successors, (65), 21 states have call predecessors, (65), 21 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-19 07:06:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 358 transitions. [2022-11-19 07:06:58,037 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 358 transitions. Word has length 79 [2022-11-19 07:06:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:58,038 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 358 transitions. [2022-11-19 07:06:58,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-19 07:06:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 358 transitions. [2022-11-19 07:06:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 07:06:58,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:58,041 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:58,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:06:58,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:06:58,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:58,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1196228286, now seen corresponding path program 1 times [2022-11-19 07:06:58,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:58,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897681805] [2022-11-19 07:06:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:58,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:58,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:58,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897681805] [2022-11-19 07:06:58,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897681805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:58,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240975049] [2022-11-19 07:06:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:58,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:06:58,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:58,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:06:58,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:06:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:58,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:06:58,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:58,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:06:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 07:06:58,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240975049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:06:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [545666801] [2022-11-19 07:06:58,970 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-19 07:06:58,970 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:06:58,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:06:58,973 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:06:58,973 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:07:52,208 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:07:52,501 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:07:52,791 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:08:26,099 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 468 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:08:39,010 WARN L233 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 490 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:08:45,026 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:04,397 WARN L233 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 593 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:17,883 WARN L233 SmtUtils]: Spent 13.13s on a formula simplification. DAG size of input: 593 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:31,474 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 572 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:38,288 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 568 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:48,445 WARN L233 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 572 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:09:55,968 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 553 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:03,072 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 584 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:03,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [545666801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:03,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:10:03,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 07:10:03,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091074122] [2022-11-19 07:10:03,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:03,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:10:03,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:03,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:10:03,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:10:03,084 INFO L87 Difference]: Start difference. First operand 252 states and 358 transitions. Second operand has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-19 07:10:10,888 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 346 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:17,258 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 346 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:23,671 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 343 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:30,134 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 341 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:45,084 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 526 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:57,977 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 378 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:05,026 INFO L93 Difference]: Finished difference Result 585 states and 883 transitions. [2022-11-19 07:11:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 07:11:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 85 [2022-11-19 07:11:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:05,031 INFO L225 Difference]: With dead ends: 585 [2022-11-19 07:11:05,031 INFO L226 Difference]: Without dead ends: 379 [2022-11-19 07:11:05,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 181.7s TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 07:11:05,033 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 218 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:05,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 3096 Invalid, 2063 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-19 07:11:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-19 07:11:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 296. [2022-11-19 07:11:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 206 states have (on average 1.441747572815534) internal successors, (297), 210 states have internal predecessors, (297), 67 states have call successors, (67), 22 states have call predecessors, (67), 22 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-19 07:11:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 430 transitions. [2022-11-19 07:11:05,312 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 430 transitions. Word has length 85 [2022-11-19 07:11:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:05,314 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 430 transitions. [2022-11-19 07:11:05,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-19 07:11:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 430 transitions. [2022-11-19 07:11:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 07:11:05,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:05,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:11:05,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:11:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:05,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1544701501, now seen corresponding path program 1 times [2022-11-19 07:11:05,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716341359] [2022-11-19 07:11:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:05,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716341359] [2022-11-19 07:11:05,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716341359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:11:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013330985] [2022-11-19 07:11:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:05,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:05,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:11:05,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:11:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:06,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:11:06,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:06,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:11:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:11:06,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013330985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:11:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [580023544] [2022-11-19 07:11:06,246 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-19 07:11:06,247 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:11:06,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:11:06,248 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:11:06,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:11:43,600 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:11:43,887 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-19 07:11:43,951 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-11-19 07:11:44,019 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 253 for LOIs [2022-11-19 07:11:44,099 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:11:44,398 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:12:15,453 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 468 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:28,408 WARN L233 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 490 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:12:34,445 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:00,810 WARN L233 SmtUtils]: Spent 19.83s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:21,191 WARN L233 SmtUtils]: Spent 19.98s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:37,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [580023544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:37,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:13:37,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-19 07:13:37,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484876898] [2022-11-19 07:13:37,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:37,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-19 07:13:37,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:13:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-19 07:13:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:13:37,610 INFO L87 Difference]: Start difference. First operand 296 states and 430 transitions. Second operand has 30 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-19 07:13:49,102 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 622 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:58,531 WARN L233 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 622 DAG size of output: 423 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:12,902 INFO L93 Difference]: Finished difference Result 615 states and 932 transitions. [2022-11-19 07:14:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-19 07:14:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 88 [2022-11-19 07:14:12,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:12,906 INFO L225 Difference]: With dead ends: 615 [2022-11-19 07:14:12,906 INFO L226 Difference]: Without dead ends: 409 [2022-11-19 07:14:12,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 131.9s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 07:14:12,908 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 172 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:12,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 3856 Invalid, 3433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2022-11-19 07:14:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-19 07:14:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 363. [2022-11-19 07:14:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 266 states have (on average 1.4699248120300752) internal successors, (391), 271 states have internal predecessors, (391), 71 states have call successors, (71), 25 states have call predecessors, (71), 25 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-19 07:14:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 532 transitions. [2022-11-19 07:14:13,212 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 532 transitions. Word has length 88 [2022-11-19 07:14:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:13,213 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 532 transitions. [2022-11-19 07:14:13,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-19 07:14:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 532 transitions. [2022-11-19 07:14:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:14:13,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:13,216 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:13,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:13,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:13,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:13,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1653124015, now seen corresponding path program 1 times [2022-11-19 07:14:13,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:13,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323321915] [2022-11-19 07:14:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:13,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:14:13,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:13,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323321915] [2022-11-19 07:14:13,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323321915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:14:13,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643210169] [2022-11-19 07:14:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:13,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:13,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:13,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:14:13,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:14:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:13,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:14:13,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:14:13,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:14:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:14:13,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643210169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:14:13,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2140949763] [2022-11-19 07:14:13,971 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-19 07:14:13,971 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:14:13,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:14:13,971 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:14:13,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:14:50,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:50,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:50,200 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.ipretEnterCall(DagInterpreter.java:193) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:185) 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 07:14:50,204 INFO L158 Benchmark]: Toolchain (without parser) took 700078.54ms. Allocated memory was 136.3MB in the beginning and 1.0GB in the end (delta: 895.5MB). Free memory was 99.7MB in the beginning and 776.3MB in the end (delta: -676.6MB). Peak memory consumption was 645.4MB. Max. memory is 16.1GB. [2022-11-19 07:14:50,205 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:14:50,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 998.22ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 85.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:14:50,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 123.66ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 79.5MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:14:50,206 INFO L158 Benchmark]: Boogie Preprocessor took 69.89ms. Allocated memory is still 136.3MB. Free memory was 79.5MB in the beginning and 74.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:14:50,206 INFO L158 Benchmark]: RCFGBuilder took 2313.81ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 74.9MB in the beginning and 129.6MB in the end (delta: -54.7MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2022-11-19 07:14:50,206 INFO L158 Benchmark]: TraceAbstraction took 696564.61ms. Allocated memory was 186.6MB in the beginning and 1.0GB in the end (delta: 845.2MB). Free memory was 128.6MB in the beginning and 776.3MB in the end (delta: -647.7MB). Peak memory consumption was 624.3MB. Max. memory is 16.1GB. [2022-11-19 07:14:50,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 998.22ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 85.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 123.66ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 79.5MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.89ms. Allocated memory is still 136.3MB. Free memory was 79.5MB in the beginning and 74.9MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2313.81ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 74.9MB in the beginning and 129.6MB in the end (delta: -54.7MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * TraceAbstraction took 696564.61ms. Allocated memory was 186.6MB in the beginning and 1.0GB in the end (delta: 845.2MB). Free memory was 128.6MB in the beginning and 776.3MB in the end (delta: -647.7MB). Peak memory consumption was 624.3MB. 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 07:14:50,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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_32036b5f-b349-471f-97a5-471636140abd/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 e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- 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 07:14:52,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:14:52,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:14:52,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:14:52,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:14:52,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:14:52,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:14:52,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:14:52,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:14:52,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:14:52,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:14:52,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:14:52,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:14:52,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:14:52,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:14:52,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:14:52,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:14:52,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:14:52,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:14:52,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:14:52,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:14:52,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:14:52,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:14:52,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:14:52,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:14:52,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:14:52,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:14:52,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:14:52,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:14:52,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:14:52,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:14:52,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:14:52,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:14:52,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:14:52,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:14:52,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:14:52,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:14:52,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:14:52,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:14:52,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:14:52,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:14:52,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:14:52,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:14:52,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:14:52,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:14:52,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:14:52,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:14:52,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:14:52,698 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:14:52,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:14:52,698 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:14:52,699 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:14:52,700 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:14:52,700 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:14:52,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:14:52,702 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:14:52,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:14:52,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:14:52,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:14:52,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:14:52,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:14:52,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:14:52,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:14:52,704 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:14:52,704 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:14:52,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:14:52,704 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:14:52,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:14:52,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:14:52,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:14:52,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:14:52,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:14:52,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:14:52,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:14:52,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:14:52,707 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:14:52,707 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:14:52,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:14:52,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:14:52,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:14:52,708 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_32036b5f-b349-471f-97a5-471636140abd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2022-11-19 07:14:53,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:14:53,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:14:53,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:14:53,130 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:14:53,131 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:14:53,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-19 07:14:53,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/802f75f37/434be952fc284d92a26f73a1a945af88/FLAG8f9ac56a9 [2022-11-19 07:14:53,811 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:14:53,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2022-11-19 07:14:53,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/802f75f37/434be952fc284d92a26f73a1a945af88/FLAG8f9ac56a9 [2022-11-19 07:14:54,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/data/802f75f37/434be952fc284d92a26f73a1a945af88 [2022-11-19 07:14:54,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:14:54,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:14:54,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:14:54,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:14:54,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:14:54,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:14:54" (1/1) ... [2022-11-19 07:14:54,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7fe70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:54, skipping insertion in model container [2022-11-19 07:14:54,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:14:54" (1/1) ... [2022-11-19 07:14:54,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:14:54,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:14:54,571 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_32036b5f-b349-471f-97a5-471636140abd/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-19 07:14:54,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:14:54,818 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:14:54,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:14:54,877 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_32036b5f-b349-471f-97a5-471636140abd/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-19 07:14:54,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:14:54,947 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:14:55,028 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_32036b5f-b349-471f-97a5-471636140abd/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2022-11-19 07:14:55,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:14:55,108 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:14:55,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55 WrapperNode [2022-11-19 07:14:55,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:14:55,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:14:55,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:14:55,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:14:55,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,235 INFO L138 Inliner]: procedures = 131, calls = 213, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 953 [2022-11-19 07:14:55,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:14:55,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:14:55,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:14:55,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:14:55,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:14:55,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:14:55,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:14:55,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:14:55,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (1/1) ... [2022-11-19 07:14:55,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:14:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:55,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:14:55,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:14:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:14:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:14:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:14:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:14:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:14:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:14:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:14:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:14:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:14:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:14:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:14:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:14:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:14:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:14:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:14:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:14:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:14:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:14:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:14:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:14:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:14:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:14:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:14:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:14:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:14:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:14:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:14:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:14:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:14:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:14:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:14:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:14:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:14:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:14:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:14:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:14:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:14:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:14:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:14:55,380 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:14:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:14:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:14:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:14:55,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:14:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:14:55,631 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:14:55,634 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:14:56,675 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:14:56,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:14:56,694 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:14:56,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:14:56 BoogieIcfgContainer [2022-11-19 07:14:56,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:14:56,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:14:56,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:14:56,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:14:56,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:14:54" (1/3) ... [2022-11-19 07:14:56,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ed362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:14:56, skipping insertion in model container [2022-11-19 07:14:56,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:14:55" (2/3) ... [2022-11-19 07:14:56,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ed362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:14:56, skipping insertion in model container [2022-11-19 07:14:56,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:14:56" (3/3) ... [2022-11-19 07:14:56,710 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2022-11-19 07:14:56,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:14:56,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:14:56,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:14:56,788 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;@491b5b39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:14:56,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:14:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-19 07:14:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 07:14:56,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:56,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:56,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -837891348, now seen corresponding path program 1 times [2022-11-19 07:14:56,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:14:56,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692817015] [2022-11-19 07:14:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:56,856 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 07:14:56,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:14:56,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:56,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:57,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:14:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:14:57,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:14:57,344 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:14:57,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692817015] [2022-11-19 07:14:57,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692817015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:57,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:57,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:14:57,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834999688] [2022-11-19 07:14:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:14:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:14:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:14:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:14:57,401 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:14:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:57,488 INFO L93 Difference]: Finished difference Result 509 states and 744 transitions. [2022-11-19 07:14:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:14:57,490 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2022-11-19 07:14:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:57,504 INFO L225 Difference]: With dead ends: 509 [2022-11-19 07:14:57,505 INFO L226 Difference]: Without dead ends: 327 [2022-11-19 07:14:57,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 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 07:14:57,513 INFO L413 NwaCegarLoop]: 495 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, 495 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 07:14:57,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:14:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-19 07:14:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-11-19 07:14:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.507936507936508) internal successors, (380), 255 states have internal predecessors, (380), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-19 07:14:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 487 transitions. [2022-11-19 07:14:57,633 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 487 transitions. Word has length 114 [2022-11-19 07:14:57,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:57,636 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 487 transitions. [2022-11-19 07:14:57,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:14:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 487 transitions. [2022-11-19 07:14:57,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-19 07:14:57,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:57,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:57,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Ended with exit code 0 [2022-11-19 07:14:57,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:57,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1242856840, now seen corresponding path program 1 times [2022-11-19 07:14:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:14:57,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055481279] [2022-11-19 07:14:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:57,861 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 07:14:57,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:14:57,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:57,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:58,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:14:58,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:14:58,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:14:58,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:14:58,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055481279] [2022-11-19 07:14:58,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055481279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:58,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:58,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:14:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312792442] [2022-11-19 07:14:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:58,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:14:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:14:58,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:14:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:14:58,336 INFO L87 Difference]: Start difference. First operand 327 states and 487 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:14:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:58,496 INFO L93 Difference]: Finished difference Result 645 states and 964 transitions. [2022-11-19 07:14:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:14:58,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 115 [2022-11-19 07:14:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:58,505 INFO L225 Difference]: With dead ends: 645 [2022-11-19 07:14:58,505 INFO L226 Difference]: Without dead ends: 329 [2022-11-19 07:14:58,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 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 07:14:58,512 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 133 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1759 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 07:14:58,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1759 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:14:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-19 07:14:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-11-19 07:14:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 253 states have (on average 1.5059288537549407) internal successors, (381), 257 states have internal predecessors, (381), 54 states have call successors, (54), 20 states have call predecessors, (54), 21 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2022-11-19 07:14:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 490 transitions. [2022-11-19 07:14:58,565 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 490 transitions. Word has length 115 [2022-11-19 07:14:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:58,567 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 490 transitions. [2022-11-19 07:14:58,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:14:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 490 transitions. [2022-11-19 07:14:58,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 07:14:58,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:58,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:58,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:58,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:58,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:58,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:58,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1311826027, now seen corresponding path program 1 times [2022-11-19 07:14:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:14:58,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378775343] [2022-11-19 07:14:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:58,798 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 07:14:58,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:14:58,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:58,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:59,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:14:59,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:14:59,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:14:59,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:14:59,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378775343] [2022-11-19 07:14:59,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378775343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:59,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:59,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:14:59,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26660418] [2022-11-19 07:14:59,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:59,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:14:59,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:14:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:14:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:14:59,183 INFO L87 Difference]: Start difference. First operand 329 states and 490 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:14:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:59,285 INFO L93 Difference]: Finished difference Result 647 states and 968 transitions. [2022-11-19 07:14:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:14:59,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 116 [2022-11-19 07:14:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:59,288 INFO L225 Difference]: With dead ends: 647 [2022-11-19 07:14:59,288 INFO L226 Difference]: Without dead ends: 331 [2022-11-19 07:14:59,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 07:14:59,291 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 132 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1748 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 07:14:59,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1748 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:14:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-19 07:14:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-11-19 07:14:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 259 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 22 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2022-11-19 07:14:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 495 transitions. [2022-11-19 07:14:59,316 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 495 transitions. Word has length 116 [2022-11-19 07:14:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:59,317 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 495 transitions. [2022-11-19 07:14:59,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:14:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 495 transitions. [2022-11-19 07:14:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 07:14:59,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:59,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:59,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:59,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:59,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -801730096, now seen corresponding path program 1 times [2022-11-19 07:14:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:14:59,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13015354] [2022-11-19 07:14:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:59,536 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 07:14:59,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:14:59,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:59,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:14:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:59,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:14:59,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:14:59,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:14:59,948 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:14:59,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13015354] [2022-11-19 07:14:59,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13015354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:59,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:59,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:14:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552521088] [2022-11-19 07:14:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:14:59,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:14:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:14:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:14:59,957 INFO L87 Difference]: Start difference. First operand 331 states and 495 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:00,065 INFO L93 Difference]: Finished difference Result 639 states and 958 transitions. [2022-11-19 07:15:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 117 [2022-11-19 07:15:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:00,069 INFO L225 Difference]: With dead ends: 639 [2022-11-19 07:15:00,069 INFO L226 Difference]: Without dead ends: 331 [2022-11-19 07:15:00,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 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 07:15:00,076 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 131 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1762 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 07:15:00,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1762 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-19 07:15:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-11-19 07:15:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 259 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 22 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-19 07:15:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 494 transitions. [2022-11-19 07:15:00,112 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 494 transitions. Word has length 117 [2022-11-19 07:15:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:00,113 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 494 transitions. [2022-11-19 07:15:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 494 transitions. [2022-11-19 07:15:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-19 07:15:00,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:00,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:00,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:00,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:00,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:00,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash -538512133, now seen corresponding path program 2 times [2022-11-19 07:15:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:00,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672326466] [2022-11-19 07:15:00,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:15:00,334 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 07:15:00,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:00,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:00,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:00,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-19 07:15:00,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:15:00,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:15:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-19 07:15:00,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:00,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:00,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672326466] [2022-11-19 07:15:00,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672326466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:00,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:00,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:00,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227960164] [2022-11-19 07:15:00,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:00,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:00,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:00,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:00,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:00,624 INFO L87 Difference]: Start difference. First operand 331 states and 494 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:00,667 INFO L93 Difference]: Finished difference Result 503 states and 732 transitions. [2022-11-19 07:15:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:00,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-11-19 07:15:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:00,670 INFO L225 Difference]: With dead ends: 503 [2022-11-19 07:15:00,670 INFO L226 Difference]: Without dead ends: 334 [2022-11-19 07:15:00,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 07:15:00,672 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 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 07:15:00,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-19 07:15:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2022-11-19 07:15:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 256 states have (on average 1.5) internal successors, (384), 261 states have internal predecessors, (384), 54 states have call successors, (54), 20 states have call predecessors, (54), 22 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-19 07:15:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 496 transitions. [2022-11-19 07:15:00,695 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 496 transitions. Word has length 118 [2022-11-19 07:15:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:00,696 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 496 transitions. [2022-11-19 07:15:00,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 496 transitions. [2022-11-19 07:15:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-19 07:15:00,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:00,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:00,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:00,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash -263493832, now seen corresponding path program 1 times [2022-11-19 07:15:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:00,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216502349] [2022-11-19 07:15:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:00,913 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 07:15:00,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:00,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:00,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:01,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:15:01,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:15:01,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:01,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:01,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216502349] [2022-11-19 07:15:01,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216502349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:01,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:01,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:15:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962700425] [2022-11-19 07:15:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:01,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:15:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:15:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:15:01,269 INFO L87 Difference]: Start difference. First operand 333 states and 496 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:01,353 INFO L93 Difference]: Finished difference Result 645 states and 965 transitions. [2022-11-19 07:15:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:01,354 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2022-11-19 07:15:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:01,357 INFO L225 Difference]: With dead ends: 645 [2022-11-19 07:15:01,357 INFO L226 Difference]: Without dead ends: 335 [2022-11-19 07:15:01,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 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 07:15:01,359 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 129 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1764 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 07:15:01,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1764 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-19 07:15:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-11-19 07:15:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 263 states have internal predecessors, (385), 54 states have call successors, (54), 20 states have call predecessors, (54), 23 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2022-11-19 07:15:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 499 transitions. [2022-11-19 07:15:01,390 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 499 transitions. Word has length 127 [2022-11-19 07:15:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:01,390 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 499 transitions. [2022-11-19 07:15:01,391 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 499 transitions. [2022-11-19 07:15:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-19 07:15:01,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:01,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 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 07:15:01,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:01,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1824072322, now seen corresponding path program 1 times [2022-11-19 07:15:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:01,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287300568] [2022-11-19 07:15:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:01,608 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 07:15:01,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:01,609 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:01,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:15:01,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 07:15:01,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:01,977 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:01,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287300568] [2022-11-19 07:15:01,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287300568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:01,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:01,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:15:01,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902398850] [2022-11-19 07:15:01,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:01,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:15:01,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:01,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:15:01,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:15:01,979 INFO L87 Difference]: Start difference. First operand 335 states and 499 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:02,078 INFO L93 Difference]: Finished difference Result 643 states and 960 transitions. [2022-11-19 07:15:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:02,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2022-11-19 07:15:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:02,082 INFO L225 Difference]: With dead ends: 643 [2022-11-19 07:15:02,082 INFO L226 Difference]: Without dead ends: 335 [2022-11-19 07:15:02,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 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 07:15:02,098 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 130 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1751 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 07:15:02,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1751 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-19 07:15:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-11-19 07:15:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.4980544747081712) internal successors, (385), 263 states have internal predecessors, (385), 54 states have call successors, (54), 20 states have call predecessors, (54), 23 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2022-11-19 07:15:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 498 transitions. [2022-11-19 07:15:02,139 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 498 transitions. Word has length 128 [2022-11-19 07:15:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:02,140 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 498 transitions. [2022-11-19 07:15:02,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 498 transitions. [2022-11-19 07:15:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-19 07:15:02,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:02,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:02,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Ended with exit code 0 [2022-11-19 07:15:02,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:02,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:02,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash -293288647, now seen corresponding path program 2 times [2022-11-19 07:15:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:02,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156035558] [2022-11-19 07:15:02,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:15:02,359 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 07:15:02,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:02,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:02,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:02,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:15:02,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:15:02,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:15:02,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 07:15:02,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:02,737 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:02,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156035558] [2022-11-19 07:15:02,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156035558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:02,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:02,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:15:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940382465] [2022-11-19 07:15:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:15:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:15:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:15:02,740 INFO L87 Difference]: Start difference. First operand 335 states and 498 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:02,857 INFO L93 Difference]: Finished difference Result 645 states and 965 transitions. [2022-11-19 07:15:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 129 [2022-11-19 07:15:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:02,860 INFO L225 Difference]: With dead ends: 645 [2022-11-19 07:15:02,860 INFO L226 Difference]: Without dead ends: 337 [2022-11-19 07:15:02,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 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 07:15:02,862 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 128 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1753 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 07:15:02,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1753 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-19 07:15:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-11-19 07:15:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 258 states have (on average 1.496124031007752) internal successors, (386), 265 states have internal predecessors, (386), 54 states have call successors, (54), 20 states have call predecessors, (54), 24 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2022-11-19 07:15:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2022-11-19 07:15:02,899 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 129 [2022-11-19 07:15:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:02,899 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2022-11-19 07:15:02,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2022-11-19 07:15:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-19 07:15:02,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:02,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 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 07:15:02,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:03,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:03,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1462379001, now seen corresponding path program 1 times [2022-11-19 07:15:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333777153] [2022-11-19 07:15:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:03,124 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 07:15:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:03,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:03,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Waiting until timeout for monitored process [2022-11-19 07:15:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:03,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:15:03,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:03,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:03,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:03,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333777153] [2022-11-19 07:15:03,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333777153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:03,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:03,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964889114] [2022-11-19 07:15:03,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:03,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:03,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:03,456 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:03,513 INFO L93 Difference]: Finished difference Result 705 states and 1067 transitions. [2022-11-19 07:15:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:03,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2022-11-19 07:15:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:03,516 INFO L225 Difference]: With dead ends: 705 [2022-11-19 07:15:03,516 INFO L226 Difference]: Without dead ends: 399 [2022-11-19 07:15:03,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 07:15:03,519 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 115 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 954 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 07:15:03,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:03,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-19 07:15:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 391. [2022-11-19 07:15:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 301 states have (on average 1.5149501661129567) internal successors, (456), 308 states have internal predecessors, (456), 65 states have call successors, (65), 20 states have call predecessors, (65), 24 states have return successors, (76), 64 states have call predecessors, (76), 64 states have call successors, (76) [2022-11-19 07:15:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 597 transitions. [2022-11-19 07:15:03,561 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 597 transitions. Word has length 130 [2022-11-19 07:15:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:03,562 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 597 transitions. [2022-11-19 07:15:03,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 597 transitions. [2022-11-19 07:15:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 07:15:03,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:03,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 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 07:15:03,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:03,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:03,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash 606209165, now seen corresponding path program 1 times [2022-11-19 07:15:03,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:03,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666188814] [2022-11-19 07:15:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:03,779 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 07:15:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:03,781 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:03,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:04,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:15:04,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:15:04,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:04,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:04,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666188814] [2022-11-19 07:15:04,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666188814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:04,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:04,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:15:04,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616390970] [2022-11-19 07:15:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:04,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:15:04,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:15:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:15:04,185 INFO L87 Difference]: Start difference. First operand 391 states and 597 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:04,361 INFO L93 Difference]: Finished difference Result 902 states and 1398 transitions. [2022-11-19 07:15:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:15:04,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-11-19 07:15:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:04,365 INFO L225 Difference]: With dead ends: 902 [2022-11-19 07:15:04,365 INFO L226 Difference]: Without dead ends: 540 [2022-11-19 07:15:04,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 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 07:15:04,368 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 584 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1136 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 07:15:04,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1136 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:04,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-19 07:15:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 399. [2022-11-19 07:15:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 308 states have (on average 1.5) internal successors, (462), 314 states have internal predecessors, (462), 65 states have call successors, (65), 22 states have call predecessors, (65), 25 states have return successors, (72), 64 states have call predecessors, (72), 64 states have call successors, (72) [2022-11-19 07:15:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 599 transitions. [2022-11-19 07:15:04,428 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 599 transitions. Word has length 131 [2022-11-19 07:15:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:04,430 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 599 transitions. [2022-11-19 07:15:04,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:04,430 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 599 transitions. [2022-11-19 07:15:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 07:15:04,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:04,433 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 07:15:04,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:04,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:04,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:04,647 INFO L85 PathProgramCache]: Analyzing trace with hash 14563746, now seen corresponding path program 1 times [2022-11-19 07:15:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:04,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590097507] [2022-11-19 07:15:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:04,647 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 07:15:04,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:04,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:04,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:04,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:04,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:05,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:05,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:05,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590097507] [2022-11-19 07:15:05,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590097507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:05,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1614596430] [2022-11-19 07:15:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:05,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:05,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:05,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:05,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:15:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:05,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:15:05,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:15:06,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:06,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1614596430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:06,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:15:06,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 16 [2022-11-19 07:15:06,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721690245] [2022-11-19 07:15:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:06,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:15:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:15:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:15:06,307 INFO L87 Difference]: Start difference. First operand 399 states and 599 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-19 07:15:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:09,240 INFO L93 Difference]: Finished difference Result 1219 states and 1822 transitions. [2022-11-19 07:15:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:15:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 132 [2022-11-19 07:15:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:09,249 INFO L225 Difference]: With dead ends: 1219 [2022-11-19 07:15:09,249 INFO L226 Difference]: Without dead ends: 1058 [2022-11-19 07:15:09,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:15:09,252 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1020 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:09,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 5890 Invalid, 1952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:15:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-19 07:15:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1021. [2022-11-19 07:15:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 783 states have (on average 1.48786717752235) internal successors, (1165), 798 states have internal predecessors, (1165), 177 states have call successors, (177), 53 states have call predecessors, (177), 60 states have return successors, (207), 177 states have call predecessors, (207), 174 states have call successors, (207) [2022-11-19 07:15:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1549 transitions. [2022-11-19 07:15:09,439 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1549 transitions. Word has length 132 [2022-11-19 07:15:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:09,440 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1549 transitions. [2022-11-19 07:15:09,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 9 states have internal predecessors, (93), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-19 07:15:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1549 transitions. [2022-11-19 07:15:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:15:09,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:09,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:09,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:09,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:09,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:09,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1610095755, now seen corresponding path program 1 times [2022-11-19 07:15:09,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:09,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536012695] [2022-11-19 07:15:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:09,863 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 07:15:09,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:09,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:09,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (14)] Waiting until timeout for monitored process [2022-11-19 07:15:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:10,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:10,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:10,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:10,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:10,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536012695] [2022-11-19 07:15:10,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536012695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:10,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [602913791] [2022-11-19 07:15:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:10,365 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:10,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:10,367 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:10,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-19 07:15:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:10,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:15:10,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 07:15:11,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:11,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [602913791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:11,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:15:11,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4] total 12 [2022-11-19 07:15:11,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894936717] [2022-11-19 07:15:11,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:11,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:15:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:15:11,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:15:11,027 INFO L87 Difference]: Start difference. First operand 1021 states and 1549 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:15:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:11,885 INFO L93 Difference]: Finished difference Result 2332 states and 3508 transitions. [2022-11-19 07:15:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:15:11,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 133 [2022-11-19 07:15:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:11,893 INFO L225 Difference]: With dead ends: 2332 [2022-11-19 07:15:11,894 INFO L226 Difference]: Without dead ends: 1239 [2022-11-19 07:15:11,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-11-19 07:15:11,899 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 939 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:11,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 2930 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:15:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-19 07:15:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1104. [2022-11-19 07:15:12,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 839 states have (on average 1.4696066746126342) internal successors, (1233), 855 states have internal predecessors, (1233), 204 states have call successors, (204), 56 states have call predecessors, (204), 60 states have return successors, (236), 203 states have call predecessors, (236), 201 states have call successors, (236) [2022-11-19 07:15:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1673 transitions. [2022-11-19 07:15:12,067 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1673 transitions. Word has length 133 [2022-11-19 07:15:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:12,067 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1673 transitions. [2022-11-19 07:15:12,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:15:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1673 transitions. [2022-11-19 07:15:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:15:12,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:12,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:12,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:12,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:12,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash -266834589, now seen corresponding path program 1 times [2022-11-19 07:15:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:12,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060446087] [2022-11-19 07:15:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:12,492 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 07:15:12,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:12,493 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:12,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:12,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:12,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:12,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:13,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:13,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060446087] [2022-11-19 07:15:13,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060446087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:13,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [132597113] [2022-11-19 07:15:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:13,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:13,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:13,047 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:13,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 07:15:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:13,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:15:13,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:15:13,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:13,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [132597113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:13,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:15:13,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 16 [2022-11-19 07:15:13,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206933512] [2022-11-19 07:15:13,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:13,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:15:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:15:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:15:13,933 INFO L87 Difference]: Start difference. First operand 1104 states and 1673 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-19 07:15:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:16,428 INFO L93 Difference]: Finished difference Result 3087 states and 4641 transitions. [2022-11-19 07:15:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:15:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 133 [2022-11-19 07:15:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:16,447 INFO L225 Difference]: With dead ends: 3087 [2022-11-19 07:15:16,447 INFO L226 Difference]: Without dead ends: 2582 [2022-11-19 07:15:16,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:15:16,452 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 1339 mSDsluCounter, 4052 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 4702 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:16,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 4702 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 07:15:16,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2022-11-19 07:15:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2456. [2022-11-19 07:15:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 1861 states have (on average 1.4631918323481998) internal successors, (2723), 1897 states have internal predecessors, (2723), 464 states have call successors, (464), 122 states have call predecessors, (464), 130 states have return successors, (556), 463 states have call predecessors, (556), 457 states have call successors, (556) [2022-11-19 07:15:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3743 transitions. [2022-11-19 07:15:16,794 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3743 transitions. Word has length 133 [2022-11-19 07:15:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:16,794 INFO L495 AbstractCegarLoop]: Abstraction has 2456 states and 3743 transitions. [2022-11-19 07:15:16,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-19 07:15:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3743 transitions. [2022-11-19 07:15:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:15:16,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:16,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:16,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Ended with exit code 0 [2022-11-19 07:15:17,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:17,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:17,219 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1661438113, now seen corresponding path program 1 times [2022-11-19 07:15:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:17,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607196278] [2022-11-19 07:15:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:17,220 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 07:15:17,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:17,221 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:17,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:17,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:17,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:17,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:17,625 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607196278] [2022-11-19 07:15:17,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607196278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2144984810] [2022-11-19 07:15:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:17,626 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:17,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:17,627 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:17,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-19 07:15:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:17,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:15:17,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:15:18,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 07:15:18,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2144984810] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:15:18,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:15:18,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 5] total 14 [2022-11-19 07:15:18,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40478001] [2022-11-19 07:15:18,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:18,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:15:18,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:15:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:15:18,527 INFO L87 Difference]: Start difference. First operand 2456 states and 3743 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:20,068 INFO L93 Difference]: Finished difference Result 8084 states and 11975 transitions. [2022-11-19 07:15:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:15:20,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-11-19 07:15:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:20,111 INFO L225 Difference]: With dead ends: 8084 [2022-11-19 07:15:20,111 INFO L226 Difference]: Without dead ends: 6636 [2022-11-19 07:15:20,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:15:20,119 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1079 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:20,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 2142 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:15:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2022-11-19 07:15:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6590. [2022-11-19 07:15:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 4959 states have (on average 1.4222625529340593) internal successors, (7053), 5079 states have internal predecessors, (7053), 1186 states have call successors, (1186), 374 states have call predecessors, (1186), 444 states have return successors, (1527), 1214 states have call predecessors, (1527), 1158 states have call successors, (1527) [2022-11-19 07:15:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9766 transitions. [2022-11-19 07:15:21,119 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9766 transitions. Word has length 133 [2022-11-19 07:15:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:21,119 INFO L495 AbstractCegarLoop]: Abstraction has 6590 states and 9766 transitions. [2022-11-19 07:15:21,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:15:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9766 transitions. [2022-11-19 07:15:21,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-19 07:15:21,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:21,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:21,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:21,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:21,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:21,542 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1366866348, now seen corresponding path program 1 times [2022-11-19 07:15:21,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:21,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573842858] [2022-11-19 07:15:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:21,543 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 07:15:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:21,544 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:21,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:21,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:21,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:21,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:21,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:21,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573842858] [2022-11-19 07:15:21,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573842858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:21,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1137782662] [2022-11-19 07:15:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:21,980 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:21,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:21,981 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:21,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-19 07:15:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:22,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 07:15:22,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:15:22,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:22,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1137782662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:22,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:15:22,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 15 [2022-11-19 07:15:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28936949] [2022-11-19 07:15:22,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:22,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:15:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:15:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:15:22,542 INFO L87 Difference]: Start difference. First operand 6590 states and 9766 transitions. Second operand has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-19 07:15:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:23,973 INFO L93 Difference]: Finished difference Result 10901 states and 16020 transitions. [2022-11-19 07:15:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:15:23,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 134 [2022-11-19 07:15:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:24,002 INFO L225 Difference]: With dead ends: 10901 [2022-11-19 07:15:24,003 INFO L226 Difference]: Without dead ends: 5391 [2022-11-19 07:15:24,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:15:24,022 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 325 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:24,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 4374 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:15:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2022-11-19 07:15:25,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 5183. [2022-11-19 07:15:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 3913 states have (on average 1.431638129312548) internal successors, (5602), 4020 states have internal predecessors, (5602), 914 states have call successors, (914), 294 states have call predecessors, (914), 355 states have return successors, (1216), 929 states have call predecessors, (1216), 893 states have call successors, (1216) [2022-11-19 07:15:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 7732 transitions. [2022-11-19 07:15:25,088 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 7732 transitions. Word has length 134 [2022-11-19 07:15:25,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:25,089 INFO L495 AbstractCegarLoop]: Abstraction has 5183 states and 7732 transitions. [2022-11-19 07:15:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-19 07:15:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 7732 transitions. [2022-11-19 07:15:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 07:15:25,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:25,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:25,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:25,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:25,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash -87145624, now seen corresponding path program 1 times [2022-11-19 07:15:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:25,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106702382] [2022-11-19 07:15:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:25,514 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 07:15:25,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:25,515 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:25,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:25,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:25,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:25,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:25,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:25,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106702382] [2022-11-19 07:15:25,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106702382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:25,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1109194587] [2022-11-19 07:15:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:25,959 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:25,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:25,963 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:25,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 07:15:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:15:26,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 07:15:26,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:26,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1109194587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:26,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:15:26,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-11-19 07:15:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347475146] [2022-11-19 07:15:26,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:26,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:15:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:26,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:15:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:15:26,373 INFO L87 Difference]: Start difference. First operand 5183 states and 7732 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 07:15:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:28,029 INFO L93 Difference]: Finished difference Result 12193 states and 18331 transitions. [2022-11-19 07:15:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:28,030 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), 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 07:15:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:28,082 INFO L225 Difference]: With dead ends: 12193 [2022-11-19 07:15:28,082 INFO L226 Difference]: Without dead ends: 7910 [2022-11-19 07:15:28,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:15:28,096 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 190 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:28,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1765 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:15:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7910 states. [2022-11-19 07:15:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7910 to 5138. [2022-11-19 07:15:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 3900 states have (on average 1.426153846153846) internal successors, (5562), 4003 states have internal predecessors, (5562), 883 states have call successors, (883), 294 states have call predecessors, (883), 354 states have return successors, (1178), 898 states have call predecessors, (1178), 862 states have call successors, (1178) [2022-11-19 07:15:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 7623 transitions. [2022-11-19 07:15:29,128 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 7623 transitions. Word has length 143 [2022-11-19 07:15:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:29,128 INFO L495 AbstractCegarLoop]: Abstraction has 5138 states and 7623 transitions. [2022-11-19 07:15:29,128 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), 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 07:15:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 7623 transitions. [2022-11-19 07:15:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 07:15:29,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:29,138 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:29,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:29,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:29,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:29,552 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1261075540, now seen corresponding path program 1 times [2022-11-19 07:15:29,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:29,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459625377] [2022-11-19 07:15:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:29,553 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 07:15:29,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:29,555 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:29,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (24)] Waiting until timeout for monitored process [2022-11-19 07:15:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:29,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:29,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:29,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:29,976 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:29,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459625377] [2022-11-19 07:15:29,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459625377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:29,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160745106] [2022-11-19 07:15:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:29,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:29,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:29,978 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:29,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-19 07:15:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:30,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:15:30,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 07:15:30,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:30,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1160745106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:30,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:15:30,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 13 [2022-11-19 07:15:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794664422] [2022-11-19 07:15:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:30,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:15:30,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:15:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:15:30,430 INFO L87 Difference]: Start difference. First operand 5138 states and 7623 transitions. Second operand has 9 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-19 07:15:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:31,507 INFO L93 Difference]: Finished difference Result 8268 states and 11991 transitions. [2022-11-19 07:15:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:15:31,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 143 [2022-11-19 07:15:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:31,542 INFO L225 Difference]: With dead ends: 8268 [2022-11-19 07:15:31,543 INFO L226 Difference]: Without dead ends: 4622 [2022-11-19 07:15:31,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:15:31,555 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 187 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:31,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 3609 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:15:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-11-19 07:15:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4565. [2022-11-19 07:15:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 3480 states have (on average 1.4272988505747126) internal successors, (4967), 3569 states have internal predecessors, (4967), 744 states have call successors, (744), 280 states have call predecessors, (744), 340 states have return successors, (994), 760 states have call predecessors, (994), 724 states have call successors, (994) [2022-11-19 07:15:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6705 transitions. [2022-11-19 07:15:32,690 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6705 transitions. Word has length 143 [2022-11-19 07:15:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:32,691 INFO L495 AbstractCegarLoop]: Abstraction has 4565 states and 6705 transitions. [2022-11-19 07:15:32,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-19 07:15:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6705 transitions. [2022-11-19 07:15:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 07:15:32,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:32,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:32,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:32,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-11-19 07:15:33,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:33,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1442275579, now seen corresponding path program 1 times [2022-11-19 07:15:33,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:33,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831693361] [2022-11-19 07:15:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:33,116 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 07:15:33,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:33,117 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:33,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (26)] Waiting until timeout for monitored process [2022-11-19 07:15:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:33,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:15:33,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:33,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:33,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:33,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831693361] [2022-11-19 07:15:33,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831693361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:33,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [714800159] [2022-11-19 07:15:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:33,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:15:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:15:33,499 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:15:33,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-19 07:15:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:33,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:15:33,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 07:15:33,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:33,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [714800159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:33,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:15:33,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 9 [2022-11-19 07:15:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515091004] [2022-11-19 07:15:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:15:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:15:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:15:33,907 INFO L87 Difference]: Start difference. First operand 4565 states and 6705 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), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:15:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:34,393 INFO L93 Difference]: Finished difference Result 5848 states and 8425 transitions. [2022-11-19 07:15:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:34,394 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), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2022-11-19 07:15:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:34,410 INFO L225 Difference]: With dead ends: 5848 [2022-11-19 07:15:34,410 INFO L226 Difference]: Without dead ends: 3745 [2022-11-19 07:15:34,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:15:34,418 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 9 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:34,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1884 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2022-11-19 07:15:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3678. [2022-11-19 07:15:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 2831 states have (on average 1.4450724125750618) internal successors, (4091), 2896 states have internal predecessors, (4091), 549 states have call successors, (549), 251 states have call predecessors, (549), 297 states have return successors, (716), 562 states have call predecessors, (716), 530 states have call successors, (716) [2022-11-19 07:15:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 5356 transitions. [2022-11-19 07:15:34,949 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 5356 transitions. Word has length 143 [2022-11-19 07:15:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:34,949 INFO L495 AbstractCegarLoop]: Abstraction has 3678 states and 5356 transitions. [2022-11-19 07:15:34,950 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), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:15:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 5356 transitions. [2022-11-19 07:15:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 07:15:34,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:34,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:34,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:35,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (26)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:35,361 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1724559246, now seen corresponding path program 1 times [2022-11-19 07:15:35,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:35,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478255825] [2022-11-19 07:15:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:35,363 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 07:15:35,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:35,364 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:35,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (28)] Waiting until timeout for monitored process [2022-11-19 07:15:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:35,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:15:35,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:35,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:35,711 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478255825] [2022-11-19 07:15:35,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478255825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:35,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:35,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274181062] [2022-11-19 07:15:35,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:35,716 INFO L87 Difference]: Start difference. First operand 3678 states and 5356 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:36,382 INFO L93 Difference]: Finished difference Result 7929 states and 11696 transitions. [2022-11-19 07:15:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:36,383 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-11-19 07:15:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:36,401 INFO L225 Difference]: With dead ends: 7929 [2022-11-19 07:15:36,401 INFO L226 Difference]: Without dead ends: 4292 [2022-11-19 07:15:36,410 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 07:15:36,411 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 109 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 987 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 07:15:36,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 987 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2022-11-19 07:15:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4170. [2022-11-19 07:15:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 3223 states have (on average 1.4703692212224635) internal successors, (4739), 3288 states have internal predecessors, (4739), 649 states have call successors, (649), 251 states have call predecessors, (649), 297 states have return successors, (856), 662 states have call predecessors, (856), 630 states have call successors, (856) [2022-11-19 07:15:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6244 transitions. [2022-11-19 07:15:36,982 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6244 transitions. Word has length 161 [2022-11-19 07:15:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:36,983 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6244 transitions. [2022-11-19 07:15:36,983 INFO L496 AbstractCegarLoop]: INTERPOLANT 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, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6244 transitions. [2022-11-19 07:15:36,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-19 07:15:36,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:36,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:37,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (28)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:37,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:37,207 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:37,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2058532675, now seen corresponding path program 1 times [2022-11-19 07:15:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:37,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775993532] [2022-11-19 07:15:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:37,208 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 07:15:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:37,210 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:37,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (29)] Waiting until timeout for monitored process [2022-11-19 07:15:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:37,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:15:37,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:37,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:37,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:37,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775993532] [2022-11-19 07:15:37,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775993532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:37,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:37,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:37,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994337254] [2022-11-19 07:15:37,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:37,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:37,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:37,569 INFO L87 Difference]: Start difference. First operand 4170 states and 6244 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:38,327 INFO L93 Difference]: Finished difference Result 9397 states and 14320 transitions. [2022-11-19 07:15:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:38,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2022-11-19 07:15:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:38,350 INFO L225 Difference]: With dead ends: 9397 [2022-11-19 07:15:38,351 INFO L226 Difference]: Without dead ends: 5268 [2022-11-19 07:15:38,362 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 07:15:38,362 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 107 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 975 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 07:15:38,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 975 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-11-19 07:15:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5146. [2022-11-19 07:15:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 4015 states have (on average 1.501120797011208) internal successors, (6027), 4080 states have internal predecessors, (6027), 833 states have call successors, (833), 251 states have call predecessors, (833), 297 states have return successors, (1112), 846 states have call predecessors, (1112), 814 states have call successors, (1112) [2022-11-19 07:15:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 7972 transitions. [2022-11-19 07:15:39,144 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 7972 transitions. Word has length 162 [2022-11-19 07:15:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:39,144 INFO L495 AbstractCegarLoop]: Abstraction has 5146 states and 7972 transitions. [2022-11-19 07:15:39,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 7972 transitions. [2022-11-19 07:15:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 07:15:39,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:39,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:39,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (29)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:39,375 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1098535868, now seen corresponding path program 1 times [2022-11-19 07:15:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:39,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781249837] [2022-11-19 07:15:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:39,376 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 07:15:39,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:39,377 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:39,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (30)] Waiting until timeout for monitored process [2022-11-19 07:15:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:39,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:15:39,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:15:39,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:39,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:39,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781249837] [2022-11-19 07:15:39,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781249837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:39,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:39,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:15:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454935991] [2022-11-19 07:15:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:39,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:15:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:15:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:15:39,841 INFO L87 Difference]: Start difference. First operand 5146 states and 7972 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 07:15:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:40,819 INFO L93 Difference]: Finished difference Result 10283 states and 16019 transitions. [2022-11-19 07:15:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:15:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2022-11-19 07:15:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:40,842 INFO L225 Difference]: With dead ends: 10283 [2022-11-19 07:15:40,842 INFO L226 Difference]: Without dead ends: 5178 [2022-11-19 07:15:40,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:15:40,857 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 468 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:40,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1243 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:15:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2022-11-19 07:15:41,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 5178. [2022-11-19 07:15:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5178 states, 4043 states have (on average 1.5016077170418007) internal successors, (6071), 4112 states have internal predecessors, (6071), 833 states have call successors, (833), 251 states have call predecessors, (833), 301 states have return successors, (1164), 846 states have call predecessors, (1164), 814 states have call successors, (1164) [2022-11-19 07:15:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 8068 transitions. [2022-11-19 07:15:41,669 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 8068 transitions. Word has length 163 [2022-11-19 07:15:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:41,669 INFO L495 AbstractCegarLoop]: Abstraction has 5178 states and 8068 transitions. [2022-11-19 07:15:41,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 07:15:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 8068 transitions. [2022-11-19 07:15:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 07:15:41,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:41,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:41,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (30)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:41,898 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1719749249, now seen corresponding path program 1 times [2022-11-19 07:15:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:41,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157095314] [2022-11-19 07:15:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:41,900 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 07:15:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:41,901 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:41,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (31)] Waiting until timeout for monitored process [2022-11-19 07:15:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:42,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:15:42,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:42,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:42,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:42,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157095314] [2022-11-19 07:15:42,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157095314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:42,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:42,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319965247] [2022-11-19 07:15:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:42,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:42,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:42,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:42,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:42,260 INFO L87 Difference]: Start difference. First operand 5178 states and 8068 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:42,990 INFO L93 Difference]: Finished difference Result 12245 states and 19480 transitions. [2022-11-19 07:15:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:42,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 164 [2022-11-19 07:15:42,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:43,025 INFO L225 Difference]: With dead ends: 12245 [2022-11-19 07:15:43,026 INFO L226 Difference]: Without dead ends: 7108 [2022-11-19 07:15:43,040 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 07:15:43,041 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 105 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 967 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 07:15:43,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 967 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:15:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7108 states. [2022-11-19 07:15:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7108 to 6986. [2022-11-19 07:15:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6986 states, 5563 states have (on average 1.5371202588531367) internal successors, (8551), 5632 states have internal predecessors, (8551), 1121 states have call successors, (1121), 251 states have call predecessors, (1121), 301 states have return successors, (1620), 1134 states have call predecessors, (1620), 1102 states have call successors, (1620) [2022-11-19 07:15:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6986 states to 6986 states and 11292 transitions. [2022-11-19 07:15:44,032 INFO L78 Accepts]: Start accepts. Automaton has 6986 states and 11292 transitions. Word has length 164 [2022-11-19 07:15:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:44,033 INFO L495 AbstractCegarLoop]: Abstraction has 6986 states and 11292 transitions. [2022-11-19 07:15:44,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6986 states and 11292 transitions. [2022-11-19 07:15:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 07:15:44,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:44,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:44,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (31)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:44,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:44,265 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash 939035095, now seen corresponding path program 1 times [2022-11-19 07:15:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:44,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290468240] [2022-11-19 07:15:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:44,266 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 07:15:44,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:44,267 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:44,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (32)] Waiting until timeout for monitored process [2022-11-19 07:15:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:44,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:15:44,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:44,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:44,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:44,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290468240] [2022-11-19 07:15:44,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290468240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:44,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:44,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:15:44,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776941267] [2022-11-19 07:15:44,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:44,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:15:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:44,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:15:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:15:44,717 INFO L87 Difference]: Start difference. First operand 6986 states and 11292 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:49,140 INFO L93 Difference]: Finished difference Result 21108 states and 36110 transitions. [2022-11-19 07:15:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:15:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 164 [2022-11-19 07:15:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:49,208 INFO L225 Difference]: With dead ends: 21108 [2022-11-19 07:15:49,208 INFO L226 Difference]: Without dead ends: 14163 [2022-11-19 07:15:49,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:15:49,229 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 942 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:49,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 700 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 07:15:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14163 states. [2022-11-19 07:15:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14163 to 11210. [2022-11-19 07:15:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11210 states, 9031 states have (on average 1.573136972649762) internal successors, (14207), 9116 states have internal predecessors, (14207), 1825 states have call successors, (1825), 283 states have call predecessors, (1825), 353 states have return successors, (3800), 1842 states have call predecessors, (3800), 1806 states have call successors, (3800) [2022-11-19 07:15:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11210 states to 11210 states and 19832 transitions. [2022-11-19 07:15:51,056 INFO L78 Accepts]: Start accepts. Automaton has 11210 states and 19832 transitions. Word has length 164 [2022-11-19 07:15:51,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:51,057 INFO L495 AbstractCegarLoop]: Abstraction has 11210 states and 19832 transitions. [2022-11-19 07:15:51,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states and 19832 transitions. [2022-11-19 07:15:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 07:15:51,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:51,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:51,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (32)] Ended with exit code 0 [2022-11-19 07:15:51,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:51,290 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1718017182, now seen corresponding path program 1 times [2022-11-19 07:15:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:15:51,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769187467] [2022-11-19 07:15:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:51,291 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 07:15:51,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:15:51,292 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:15:51,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (33)] Waiting until timeout for monitored process [2022-11-19 07:15:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:51,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:15:51,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:15:51,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:15:51,725 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:15:51,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769187467] [2022-11-19 07:15:51,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769187467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:51,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:51,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:15:51,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689499997] [2022-11-19 07:15:51,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:51,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:15:51,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:15:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:15:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:15:51,727 INFO L87 Difference]: Start difference. First operand 11210 states and 19832 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:15:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:58,133 INFO L93 Difference]: Finished difference Result 33960 states and 63990 transitions. [2022-11-19 07:15:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:15:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 164 [2022-11-19 07:15:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:58,243 INFO L225 Difference]: With dead ends: 33960 [2022-11-19 07:15:58,244 INFO L226 Difference]: Without dead ends: 22791 [2022-11-19 07:15:58,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:15:58,283 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 793 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:58,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1017 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 07:15:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22791 states. [2022-11-19 07:16:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22791 to 19702. [2022-11-19 07:16:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19702 states, 15987 states have (on average 1.596734847063239) internal successors, (25527), 16116 states have internal predecessors, (25527), 3241 states have call successors, (3241), 347 states have call predecessors, (3241), 473 states have return successors, (9216), 3270 states have call predecessors, (9216), 3222 states have call successors, (9216) [2022-11-19 07:16:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19702 states to 19702 states and 37984 transitions. [2022-11-19 07:16:01,558 INFO L78 Accepts]: Start accepts. Automaton has 19702 states and 37984 transitions. Word has length 164 [2022-11-19 07:16:01,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:01,559 INFO L495 AbstractCegarLoop]: Abstraction has 19702 states and 37984 transitions. [2022-11-19 07:16:01,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:16:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 19702 states and 37984 transitions. [2022-11-19 07:16:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-19 07:16:01,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:01,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:01,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (33)] Forceful destruction successful, exit code 0 [2022-11-19 07:16:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:16:01,890 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash -830893919, now seen corresponding path program 1 times [2022-11-19 07:16:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:16:01,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626473583] [2022-11-19 07:16:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:01,891 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 07:16:01,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:16:01,892 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 07:16:01,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32036b5f-b349-471f-97a5-471636140abd/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 (34)] Waiting until timeout for monitored process [2022-11-19 07:16:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:02,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:16:02,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:16:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:16:02,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:16:02,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:16:02,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626473583] [2022-11-19 07:16:02,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626473583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:02,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:02,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:16:02,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92297789] [2022-11-19 07:16:02,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:02,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:16:02,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:16:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:16:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:16:02,300 INFO L87 Difference]: Start difference. First operand 19702 states and 37984 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 07:16:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:05,799 INFO L93 Difference]: Finished difference Result 39523 states and 77675 transitions. [2022-11-19 07:16:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:16:05,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 165 [2022-11-19 07:16:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:05,904 INFO L225 Difference]: With dead ends: 39523 [2022-11-19 07:16:05,904 INFO L226 Difference]: Without dead ends: 19862 [2022-11-19 07:16:05,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:16:05,968 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 476 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:05,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1217 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:16:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19862 states.