./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW --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 dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- 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-4e7fbc6 [2022-11-23 16:07:22,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:07:22,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:07:22,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:07:22,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:07:22,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:07:22,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:07:22,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:07:22,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:07:22,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:07:22,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:07:22,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:07:22,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:07:22,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:07:22,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:07:22,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:07:22,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:07:22,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:07:22,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:07:22,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:07:22,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:07:22,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:07:22,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:07:22,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:07:22,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:07:22,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:07:22,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:07:22,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:07:22,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:07:22,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:07:22,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:07:22,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:07:22,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:07:22,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:07:22,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:07:22,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:07:22,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:07:22,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:07:22,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:07:22,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:07:22,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:07:22,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:07:22,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:07:22,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:07:22,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:07:22,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:07:22,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:07:22,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:07:22,732 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:07:22,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:07:22,732 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:07:22,733 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:07:22,734 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:07:22,734 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:07:22,734 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:07:22,735 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:07:22,735 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:07:22,735 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:07:22,736 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:07:22,736 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:07:22,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:07:22,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:07:22,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:07:22,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:07:22,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:07:22,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:07:22,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:07:22,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:07:22,740 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:07:22,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:07:22,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:07:22,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:07:22,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:07:22,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:07:22,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:22,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:07:22,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:07:22,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:07:22,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:07:22,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:07:22,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:07:22,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:07:22,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:07:22,744 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_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2022-11-23 16:07:23,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:07:23,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:07:23,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:07:23,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:07:23,089 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:07:23,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-23 16:07:26,352 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:07:26,727 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:07:26,728 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-11-23 16:07:26,748 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/data/457f5b3c7/c3c1d4fea3f649c49515d71e8b9bbf1b/FLAGd7cd19976 [2022-11-23 16:07:26,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/data/457f5b3c7/c3c1d4fea3f649c49515d71e8b9bbf1b [2022-11-23 16:07:26,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:07:26,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:07:26,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:26,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:07:26,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:07:26,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:26" (1/1) ... [2022-11-23 16:07:26,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7043a621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:26, skipping insertion in model container [2022-11-23 16:07:26,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:26" (1/1) ... [2022-11-23 16:07:26,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:07:26,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:07:27,031 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 16:07:27,597 WARN L237 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_97534f39-babe-425e-ba20-43bec2e5ee60/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-23 16:07:27,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:27,650 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:07:27,672 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 16:07:27,746 WARN L237 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_97534f39-babe-425e-ba20-43bec2e5ee60/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2022-11-23 16:07:27,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:27,938 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:07:27,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27 WrapperNode [2022-11-23 16:07:27,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:27,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:27,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:07:27,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:07:27,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:27,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,003 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2022-11-23 16:07:28,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:28,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:07:28,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:07:28,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:07:28,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:07:28,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:07:28,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:07:28,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:07:28,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (1/1) ... [2022-11-23 16:07:28,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:28,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:07:28,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:07:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 16:07:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:07:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 16:07:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:07:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:07:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:07:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:07:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:07:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-23 16:07:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-23 16:07:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:07:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:07:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:07:28,153 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 16:07:28,528 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:07:28,530 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:07:28,808 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:07:28,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:07:28,840 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 16:07:28,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:28 BoogieIcfgContainer [2022-11-23 16:07:28,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:07:28,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:07:28,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:07:28,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:07:28,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:07:26" (1/3) ... [2022-11-23 16:07:28,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61947725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:28, skipping insertion in model container [2022-11-23 16:07:28,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:27" (2/3) ... [2022-11-23 16:07:28,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61947725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:28, skipping insertion in model container [2022-11-23 16:07:28,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:28" (3/3) ... [2022-11-23 16:07:28,851 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2022-11-23 16:07:28,860 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 16:07:28,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:07:28,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 16:07:28,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 16:07:28,970 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 16:07:29,015 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 16:07:29,028 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 163 transitions, 342 flow [2022-11-23 16:07:29,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 163 transitions, 342 flow [2022-11-23 16:07:29,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2022-11-23 16:07:29,107 INFO L130 PetriNetUnfolder]: 8/208 cut-off events. [2022-11-23 16:07:29,107 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 16:07:29,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 8/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2022-11-23 16:07:29,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 2420 [2022-11-23 16:08:23,412 INFO L134 LiptonReduction]: Checked pairs total: 4177 [2022-11-23 16:08:23,412 INFO L136 LiptonReduction]: Total number of compositions: 182 [2022-11-23 16:08:23,421 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 31 transitions, 78 flow [2022-11-23 16:08:23,454 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 193 states, 185 states have (on average 2.4324324324324325) internal successors, (450), 192 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:23,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:08:23,481 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;@1576ce33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:08:23,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 16:08:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 185 states have (on average 2.4324324324324325) internal successors, (450), 192 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 16:08:23,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:23,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 16:08:23,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash 17828661, now seen corresponding path program 1 times [2022-11-23 16:08:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:23,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767284072] [2022-11-23 16:08:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:23,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:24,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:24,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767284072] [2022-11-23 16:08:24,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767284072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:24,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:24,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:08:24,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073909938] [2022-11-23 16:08:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:24,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:08:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:24,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:08:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:08:24,413 INFO L87 Difference]: Start difference. First operand has 193 states, 185 states have (on average 2.4324324324324325) internal successors, (450), 192 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:24,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:24,604 INFO L93 Difference]: Finished difference Result 266 states and 614 transitions. [2022-11-23 16:08:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:08:24,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 16:08:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:24,619 INFO L225 Difference]: With dead ends: 266 [2022-11-23 16:08:24,620 INFO L226 Difference]: Without dead ends: 249 [2022-11-23 16:08:24,621 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 [2022-11-23 16:08:24,624 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:24,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:08:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-23 16:08:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 204. [2022-11-23 16:08:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 2.321608040201005) internal successors, (462), 203 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 462 transitions. [2022-11-23 16:08:24,678 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 462 transitions. Word has length 4 [2022-11-23 16:08:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:24,679 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 462 transitions. [2022-11-23 16:08:24,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 462 transitions. [2022-11-23 16:08:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:08:24,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:24,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:08:24,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:08:24,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:24,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash -46522303, now seen corresponding path program 1 times [2022-11-23 16:08:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:24,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360517158] [2022-11-23 16:08:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:25,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360517158] [2022-11-23 16:08:25,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360517158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:25,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:25,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:08:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106215818] [2022-11-23 16:08:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:25,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:08:25,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:08:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:08:25,019 INFO L87 Difference]: Start difference. First operand 204 states and 462 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:25,310 INFO L93 Difference]: Finished difference Result 277 states and 613 transitions. [2022-11-23 16:08:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:08:25,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 16:08:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:25,313 INFO L225 Difference]: With dead ends: 277 [2022-11-23 16:08:25,313 INFO L226 Difference]: Without dead ends: 238 [2022-11-23 16:08:25,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:08:25,315 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:25,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:08:25,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-23 16:08:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 223. [2022-11-23 16:08:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 219 states have (on average 2.3698630136986303) internal successors, (519), 222 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 519 transitions. [2022-11-23 16:08:25,349 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 519 transitions. Word has length 6 [2022-11-23 16:08:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:25,350 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 519 transitions. [2022-11-23 16:08:25,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 519 transitions. [2022-11-23 16:08:25,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 16:08:25,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:25,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:25,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:08:25,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1715309037, now seen corresponding path program 1 times [2022-11-23 16:08:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:25,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137844300] [2022-11-23 16:08:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:25,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:25,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:25,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137844300] [2022-11-23 16:08:25,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137844300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:25,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:25,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:08:25,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027027691] [2022-11-23 16:08:25,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:25,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:08:25,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:08:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:08:25,506 INFO L87 Difference]: Start difference. First operand 223 states and 519 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:25,593 INFO L93 Difference]: Finished difference Result 73 states and 144 transitions. [2022-11-23 16:08:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:08:25,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 16:08:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:25,595 INFO L225 Difference]: With dead ends: 73 [2022-11-23 16:08:25,595 INFO L226 Difference]: Without dead ends: 73 [2022-11-23 16:08:25,595 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 [2022-11-23 16:08:25,596 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:25,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:08:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-23 16:08:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-23 16:08:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 2.028169014084507) internal successors, (144), 72 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 144 transitions. [2022-11-23 16:08:25,601 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 144 transitions. Word has length 9 [2022-11-23 16:08:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:25,602 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 144 transitions. [2022-11-23 16:08:25,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 144 transitions. [2022-11-23 16:08:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:25,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:25,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:25,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:08:25,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:25,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash -331298892, now seen corresponding path program 1 times [2022-11-23 16:08:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:25,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745811141] [2022-11-23 16:08:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:27,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:27,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745811141] [2022-11-23 16:08:27,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745811141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:27,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:27,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:08:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552567211] [2022-11-23 16:08:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:27,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:08:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:08:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:08:27,070 INFO L87 Difference]: Start difference. First operand 73 states and 144 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:27,362 INFO L93 Difference]: Finished difference Result 95 states and 178 transitions. [2022-11-23 16:08:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:08:27,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:27,364 INFO L225 Difference]: With dead ends: 95 [2022-11-23 16:08:27,364 INFO L226 Difference]: Without dead ends: 95 [2022-11-23 16:08:27,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 16:08:27,365 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:27,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:08:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-23 16:08:27,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2022-11-23 16:08:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 1.9404761904761905) internal successors, (163), 85 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 163 transitions. [2022-11-23 16:08:27,392 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 163 transitions. Word has length 17 [2022-11-23 16:08:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:27,393 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 163 transitions. [2022-11-23 16:08:27,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 163 transitions. [2022-11-23 16:08:27,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:27,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:27,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:27,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:08:27,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:27,399 INFO L85 PathProgramCache]: Analyzing trace with hash -331298868, now seen corresponding path program 1 times [2022-11-23 16:08:27,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:27,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832397751] [2022-11-23 16:08:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:29,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:29,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832397751] [2022-11-23 16:08:29,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832397751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:29,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:29,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 16:08:29,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399259646] [2022-11-23 16:08:29,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:29,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:08:29,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:08:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:08:29,928 INFO L87 Difference]: Start difference. First operand 86 states and 163 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:31,220 INFO L93 Difference]: Finished difference Result 181 states and 325 transitions. [2022-11-23 16:08:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 16:08:31,221 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:31,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:31,222 INFO L225 Difference]: With dead ends: 181 [2022-11-23 16:08:31,222 INFO L226 Difference]: Without dead ends: 164 [2022-11-23 16:08:31,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-23 16:08:31,223 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:31,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:08:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-23 16:08:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 92. [2022-11-23 16:08:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.9777777777777779) internal successors, (178), 91 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 178 transitions. [2022-11-23 16:08:31,230 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 178 transitions. Word has length 17 [2022-11-23 16:08:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:31,231 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 178 transitions. [2022-11-23 16:08:31,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 178 transitions. [2022-11-23 16:08:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:31,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:31,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:31,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:08:31,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1809611320, now seen corresponding path program 2 times [2022-11-23 16:08:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:31,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625486552] [2022-11-23 16:08:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:31,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:32,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625486552] [2022-11-23 16:08:32,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625486552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:32,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:32,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:08:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863115867] [2022-11-23 16:08:32,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:32,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:08:32,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:08:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:08:32,044 INFO L87 Difference]: Start difference. First operand 92 states and 178 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:32,353 INFO L93 Difference]: Finished difference Result 128 states and 231 transitions. [2022-11-23 16:08:32,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:08:32,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:32,354 INFO L225 Difference]: With dead ends: 128 [2022-11-23 16:08:32,355 INFO L226 Difference]: Without dead ends: 128 [2022-11-23 16:08:32,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 16:08:32,356 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:32,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:08:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-23 16:08:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 98. [2022-11-23 16:08:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.9583333333333333) internal successors, (188), 97 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 188 transitions. [2022-11-23 16:08:32,361 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 188 transitions. Word has length 17 [2022-11-23 16:08:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:32,362 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 188 transitions. [2022-11-23 16:08:32,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 188 transitions. [2022-11-23 16:08:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:32,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:32,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:32,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:08:32,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1809611296, now seen corresponding path program 2 times [2022-11-23 16:08:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:32,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589777678] [2022-11-23 16:08:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:32,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:34,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:34,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589777678] [2022-11-23 16:08:34,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589777678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:34,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:34,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 16:08:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363539160] [2022-11-23 16:08:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:34,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:08:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:08:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:08:34,180 INFO L87 Difference]: Start difference. First operand 98 states and 188 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:35,599 INFO L93 Difference]: Finished difference Result 154 states and 292 transitions. [2022-11-23 16:08:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 16:08:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:35,604 INFO L225 Difference]: With dead ends: 154 [2022-11-23 16:08:35,604 INFO L226 Difference]: Without dead ends: 141 [2022-11-23 16:08:35,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-23 16:08:35,605 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:35,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 16:08:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-23 16:08:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 100. [2022-11-23 16:08:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.9489795918367347) internal successors, (191), 99 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 191 transitions. [2022-11-23 16:08:35,610 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 191 transitions. Word has length 17 [2022-11-23 16:08:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:35,610 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 191 transitions. [2022-11-23 16:08:35,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 191 transitions. [2022-11-23 16:08:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:35,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:35,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:35,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:08:35,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2085138100, now seen corresponding path program 3 times [2022-11-23 16:08:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:35,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905636175] [2022-11-23 16:08:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:37,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:37,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905636175] [2022-11-23 16:08:37,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905636175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:37,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:37,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 16:08:37,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165326646] [2022-11-23 16:08:37,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:08:37,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:08:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:08:37,382 INFO L87 Difference]: Start difference. First operand 100 states and 191 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:38,694 INFO L93 Difference]: Finished difference Result 181 states and 320 transitions. [2022-11-23 16:08:38,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 16:08:38,695 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:38,697 INFO L225 Difference]: With dead ends: 181 [2022-11-23 16:08:38,697 INFO L226 Difference]: Without dead ends: 172 [2022-11-23 16:08:38,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-11-23 16:08:38,698 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:38,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:08:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-23 16:08:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 102. [2022-11-23 16:08:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.94) internal successors, (194), 101 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 194 transitions. [2022-11-23 16:08:38,703 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 194 transitions. Word has length 17 [2022-11-23 16:08:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:38,703 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 194 transitions. [2022-11-23 16:08:38,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 194 transitions. [2022-11-23 16:08:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:38,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:38,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:38,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:08:38,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1164151008, now seen corresponding path program 4 times [2022-11-23 16:08:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:38,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626446259] [2022-11-23 16:08:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:40,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:40,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626446259] [2022-11-23 16:08:40,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626446259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:40,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:40,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 16:08:40,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764586969] [2022-11-23 16:08:40,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:40,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:08:40,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:40,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:08:40,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:08:40,506 INFO L87 Difference]: Start difference. First operand 102 states and 194 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:41,687 INFO L93 Difference]: Finished difference Result 174 states and 310 transitions. [2022-11-23 16:08:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 16:08:41,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:41,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:41,689 INFO L225 Difference]: With dead ends: 174 [2022-11-23 16:08:41,690 INFO L226 Difference]: Without dead ends: 161 [2022-11-23 16:08:41,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-11-23 16:08:41,691 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:41,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:08:41,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-23 16:08:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 96. [2022-11-23 16:08:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.946808510638298) internal successors, (183), 95 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 183 transitions. [2022-11-23 16:08:41,695 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 183 transitions. Word has length 17 [2022-11-23 16:08:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:41,696 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 183 transitions. [2022-11-23 16:08:41,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 183 transitions. [2022-11-23 16:08:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:41,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:41,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:41,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:08:41,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:41,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1147058200, now seen corresponding path program 5 times [2022-11-23 16:08:41,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:41,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826153794] [2022-11-23 16:08:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:41,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:43,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826153794] [2022-11-23 16:08:43,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826153794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:43,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:43,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 16:08:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142283420] [2022-11-23 16:08:43,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:43,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:08:43,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:08:43,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:08:43,485 INFO L87 Difference]: Start difference. First operand 96 states and 183 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:44,803 INFO L93 Difference]: Finished difference Result 198 states and 352 transitions. [2022-11-23 16:08:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 16:08:44,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:44,805 INFO L225 Difference]: With dead ends: 198 [2022-11-23 16:08:44,805 INFO L226 Difference]: Without dead ends: 181 [2022-11-23 16:08:44,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-11-23 16:08:44,806 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:44,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:08:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-23 16:08:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 97. [2022-11-23 16:08:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.936842105263158) internal successors, (184), 96 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 184 transitions. [2022-11-23 16:08:44,811 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 184 transitions. Word has length 17 [2022-11-23 16:08:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:44,812 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 184 transitions. [2022-11-23 16:08:44,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 184 transitions. [2022-11-23 16:08:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:44,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:44,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:44,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 16:08:44,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1412636808, now seen corresponding path program 3 times [2022-11-23 16:08:44,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:44,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749865568] [2022-11-23 16:08:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:44,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:45,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:45,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749865568] [2022-11-23 16:08:45,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749865568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:45,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:45,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 16:08:45,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475506253] [2022-11-23 16:08:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:45,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 16:08:45,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 16:08:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 16:08:45,849 INFO L87 Difference]: Start difference. First operand 97 states and 184 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:46,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:46,399 INFO L93 Difference]: Finished difference Result 212 states and 375 transitions. [2022-11-23 16:08:46,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:08:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:46,403 INFO L225 Difference]: With dead ends: 212 [2022-11-23 16:08:46,403 INFO L226 Difference]: Without dead ends: 212 [2022-11-23 16:08:46,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-23 16:08:46,404 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:46,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:08:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-23 16:08:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 105. [2022-11-23 16:08:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.9223300970873787) internal successors, (198), 104 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 198 transitions. [2022-11-23 16:08:46,410 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 198 transitions. Word has length 17 [2022-11-23 16:08:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:46,410 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 198 transitions. [2022-11-23 16:08:46,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 198 transitions. [2022-11-23 16:08:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:46,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:46,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:46,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 16:08:46,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1412636784, now seen corresponding path program 6 times [2022-11-23 16:08:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:46,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597146751] [2022-11-23 16:08:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:46,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:48,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:48,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597146751] [2022-11-23 16:08:48,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597146751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:48,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:48,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 16:08:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105309768] [2022-11-23 16:08:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:48,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 16:08:48,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 16:08:48,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:08:48,006 INFO L87 Difference]: Start difference. First operand 105 states and 198 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:49,357 INFO L93 Difference]: Finished difference Result 207 states and 361 transitions. [2022-11-23 16:08:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 16:08:49,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-23 16:08:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:49,359 INFO L225 Difference]: With dead ends: 207 [2022-11-23 16:08:49,359 INFO L226 Difference]: Without dead ends: 194 [2022-11-23 16:08:49,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-11-23 16:08:49,360 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:49,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 16:08:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-23 16:08:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 106. [2022-11-23 16:08:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.9134615384615385) internal successors, (199), 105 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 199 transitions. [2022-11-23 16:08:49,365 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 199 transitions. Word has length 17 [2022-11-23 16:08:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:49,366 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 199 transitions. [2022-11-23 16:08:49,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:08:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 199 transitions. [2022-11-23 16:08:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 16:08:49,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:49,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:49,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 16:08:49,367 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-23 16:08:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash -125022488, now seen corresponding path program 7 times [2022-11-23 16:08:49,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:49,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743658451] [2022-11-23 16:08:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:08:49,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 16:08:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:08:49,472 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 16:08:49,472 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 16:08:49,473 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-23 16:08:49,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-23 16:08:49,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-23 16:08:49,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-23 16:08:49,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-11-23 16:08:49,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-11-23 16:08:49,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 16:08:49,479 INFO L444 BasicCegarLoop]: Path program histogram: [7, 3, 1, 1, 1] [2022-11-23 16:08:49,484 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 16:08:49,484 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:08:49,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:08:49 BasicIcfg [2022-11-23 16:08:49,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:08:49,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:08:49,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:08:49,551 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:08:49,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:28" (3/4) ... [2022-11-23 16:08:49,554 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 16:08:49,622 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:08:49,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:08:49,623 INFO L158 Benchmark]: Toolchain (without parser) took 82856.37ms. Allocated memory was 186.6MB in the beginning and 400.6MB in the end (delta: 213.9MB). Free memory was 138.7MB in the beginning and 285.2MB in the end (delta: -146.5MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. [2022-11-23 16:08:49,623 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory was 102.2MB in the beginning and 102.2MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:08:49,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1173.95ms. Allocated memory is still 186.6MB. Free memory was 138.7MB in the beginning and 151.7MB in the end (delta: -13.1MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2022-11-23 16:08:49,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.66ms. Allocated memory is still 186.6MB. Free memory was 151.7MB in the beginning and 149.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:08:49,625 INFO L158 Benchmark]: Boogie Preprocessor took 49.49ms. Allocated memory is still 186.6MB. Free memory was 149.0MB in the beginning and 145.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 16:08:49,626 INFO L158 Benchmark]: RCFGBuilder took 787.62ms. Allocated memory is still 186.6MB. Free memory was 145.7MB in the beginning and 122.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 16:08:49,627 INFO L158 Benchmark]: TraceAbstraction took 80706.71ms. Allocated memory was 186.6MB in the beginning and 400.6MB in the end (delta: 213.9MB). Free memory was 121.7MB in the beginning and 292.5MB in the end (delta: -170.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-23 16:08:49,628 INFO L158 Benchmark]: Witness Printer took 71.48ms. Allocated memory is still 400.6MB. Free memory was 292.5MB in the beginning and 285.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 16:08:49,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory was 102.2MB in the beginning and 102.2MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1173.95ms. Allocated memory is still 186.6MB. Free memory was 138.7MB in the beginning and 151.7MB in the end (delta: -13.1MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.66ms. Allocated memory is still 186.6MB. Free memory was 151.7MB in the beginning and 149.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.49ms. Allocated memory is still 186.6MB. Free memory was 149.0MB in the beginning and 145.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 787.62ms. Allocated memory is still 186.6MB. Free memory was 145.7MB in the beginning and 122.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 80706.71ms. Allocated memory was 186.6MB in the beginning and 400.6MB in the end (delta: 213.9MB). Free memory was 121.7MB in the beginning and 292.5MB in the end (delta: -170.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 71.48ms. Allocated memory is still 400.6MB. Free memory was 292.5MB in the beginning and 285.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.4s, 163 PlacesBefore, 34 PlacesAfterwards, 163 TransitionsBefore, 31 TransitionsAfterwards, 2420 CoEnabledTransitionPairs, 8 FixpointIterations, 93 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 20 ConcurrentYvCompositions, 3 ChoiceCompositions, 182 TotalNumberOfCompositions, 4177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2228, independent: 2072, independent conditional: 0, independent unconditional: 2072, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 58, unknown conditional: 0, unknown unconditional: 58] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1675, independent: 1628, independent conditional: 0, independent unconditional: 1628, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 16, unknown conditional: 0, unknown unconditional: 16] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1675, independent: 1626, independent conditional: 0, independent unconditional: 1626, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 16, unknown conditional: 0, unknown unconditional: 16] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35730, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 2222, dependent conditional: 0, dependent unconditional: 2222, unknown: 33501, unknown conditional: 0, unknown unconditional: 33501] ], Cache Queries: [ total: 2228, independent: 444, independent conditional: 0, independent unconditional: 444, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 1717, unknown conditional: 0, unknown unconditional: 1717] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 7, Unknown conditional cache size: 0, Unknown unconditional cache size: 7 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1731] CALL, EXPR 0 my_drv_init() [L1725] 0 return 0; [L1731] RET, EXPR 0 my_drv_init() [L1731] 0 int ret = my_drv_init(); [L1732] COND TRUE 0 ret==0 [L1733] 0 int probe_ret; [L1734] 0 struct my_data data; [L1735] CALL, EXPR 0 my_drv_probe(&data) [L1704] 0 struct device *d = &data->dev; [L1706] 0 data->shared.a = 0 [L1707] 0 data->shared.b = 0 [L1708] 0 int res = __VERIFIER_nondet_int(); [L1709] COND FALSE 0 !(\read(res)) [L1711] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [#in~arg={6:24}, #in~data={6:0}, d={6:24}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-2, res=0, t1={3:0}, t2={4:0}] [L1712] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [#in~arg={6:24}, #in~data={6:0}, d={6:24}, data={6:0}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [#in~arg={6:24}, __mptr={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1713] 0 return 0; [L1735] RET, EXPR 0 my_drv_probe(&data) [L1735] 0 probe_ret = my_drv_probe(&data) [L1736] COND TRUE 0 probe_ret==0 [L1737] CALL 0 my_drv_disconnect(&data) [L1719] 0 void *status; [L1720] 0 \read(t1) VAL [#in~arg={6:24}, #in~data={6:0}, \read(t1)=-2, __mptr={6:24}, arg={6:24}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [#in~arg={6:24}, __mptr={6:24}, arg={6:24}, data={6:0}, dev={6:24}, lb=0, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1720] FCALL, JOIN 1 pthread_join(t1, &status) VAL [#in~arg={6:24}, #in~data={6:0}, \read(t1)=-2, \result={0:0}, __mptr={6:24}, arg={6:24}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1721] 0 \read(t2) VAL [#in~arg={6:24}, #in~data={6:0}, \read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1721] FCALL, JOIN 2 pthread_join(t2, &status) VAL [#in~arg={6:24}, #in~data={6:0}, \read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1737] RET 0 my_drv_disconnect(&data) [L1738] EXPR 0 data.shared.a [L1738] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1738] RET 0 ldv_assert(data.shared.a==1) [L1739] EXPR 0 data.shared.b [L1739] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [#in~arg={6:24}, \result={0:0}, __mptr={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}, unknown-#in~expression-unknown=0] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1711]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 170 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 80.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 54.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 615 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 615 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3359 IncrementalHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 1 mSDtfsCounter, 3359 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=223occurred in iteration=2, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 626 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 3247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 16:08:49,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97534f39-babe-425e-ba20-43bec2e5ee60/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE