./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI --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 d8d5749cb33f10edd647435755bf2e2192f6038b258c1bda289ea3f61ba8ee50 --- 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-5e519f3 [2022-11-03 03:53:15,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:53:15,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:53:15,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:53:15,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:53:15,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:53:15,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:53:15,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:53:15,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:53:15,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:53:15,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:53:15,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:53:15,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:53:15,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:53:15,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:53:15,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:53:15,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:53:15,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:53:15,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:53:15,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:53:15,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:53:15,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:53:15,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:53:15,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:53:15,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:53:15,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:53:15,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:53:15,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:53:15,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:53:15,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:53:15,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:53:15,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:53:15,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:53:15,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:53:15,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:53:15,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:53:15,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:53:15,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:53:15,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:53:15,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:53:15,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:53:15,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:53:15,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:53:15,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:53:15,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:53:15,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:53:15,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:53:15,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:53:15,730 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:53:15,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:53:15,731 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:53:15,731 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:53:15,732 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:53:15,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:53:15,733 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:53:15,733 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:53:15,733 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:53:15,733 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:53:15,734 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:53:15,734 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:53:15,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:53:15,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:53:15,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:53:15,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:53:15,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:53:15,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:53:15,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:53:15,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:53:15,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:53:15,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:53:15,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:53:15,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:53:15,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:53:15,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:53:15,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:53:15,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:53:15,741 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:53:15,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:53:15,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:53:15,741 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:53:15,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:53:15,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:53:15,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:53:15,742 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_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8d5749cb33f10edd647435755bf2e2192f6038b258c1bda289ea3f61ba8ee50 [2022-11-03 03:53:16,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:53:16,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:53:16,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:53:16,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:53:16,094 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:53:16,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2022-11-03 03:53:16,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/data/96261a34f/02848533059b42478102406b10007d3d/FLAG1649455a6 [2022-11-03 03:53:16,757 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:53:16,757 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2022-11-03 03:53:16,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/data/96261a34f/02848533059b42478102406b10007d3d/FLAG1649455a6 [2022-11-03 03:53:17,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/data/96261a34f/02848533059b42478102406b10007d3d [2022-11-03 03:53:17,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:53:17,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:53:17,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:53:17,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:53:17,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:53:17,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4d9151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17, skipping insertion in model container [2022-11-03 03:53:17,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:53:17,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:53:17,370 WARN L230 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_2b6a73d1-da6f-492f-8879-ce5f377854a3/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c[3064,3077] [2022-11-03 03:53:17,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:53:17,463 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:53:17,483 WARN L230 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_2b6a73d1-da6f-492f-8879-ce5f377854a3/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c[3064,3077] [2022-11-03 03:53:17,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:53:17,596 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:53:17,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17 WrapperNode [2022-11-03 03:53:17,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:53:17,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:53:17,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:53:17,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:53:17,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,674 INFO L138 Inliner]: procedures = 53, calls = 151, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 224 [2022-11-03 03:53:17,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:53:17,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:53:17,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:53:17,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:53:17,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:53:17,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:53:17,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:53:17,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:53:17,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (1/1) ... [2022-11-03 03:53:17,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:53:17,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:17,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:53:17,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:53:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:53:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-03 03:53:17,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-03 03:53:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 03:53:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 03:53:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 03:53:17,812 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 03:53:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-03 03:53:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-03 03:53:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 03:53:17,813 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 03:53:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:53:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 03:53:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 03:53:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:53:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:53:17,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:53:17,895 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:53:18,224 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:53:18,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:53:18,447 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:53:18,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:18 BoogieIcfgContainer [2022-11-03 03:53:18,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:53:18,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:53:18,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:53:18,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:53:18,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:53:17" (1/3) ... [2022-11-03 03:53:18,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e759938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:18, skipping insertion in model container [2022-11-03 03:53:18,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:17" (2/3) ... [2022-11-03 03:53:18,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e759938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:18, skipping insertion in model container [2022-11-03 03:53:18,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:18" (3/3) ... [2022-11-03 03:53:18,460 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2022-11-03 03:53:18,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:53:18,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:53:18,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:53:18,561 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;@214af3ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:53:18,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:53:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 03:53:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:53:18,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:18,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:18,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:18,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2009331302, now seen corresponding path program 1 times [2022-11-03 03:53:18,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:18,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083242723] [2022-11-03 03:53:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:18,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:18,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083242723] [2022-11-03 03:53:18,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083242723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:18,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:18,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:53:18,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690190936] [2022-11-03 03:53:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:18,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:53:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:53:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:53:18,958 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:19,029 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2022-11-03 03:53:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:53:19,032 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 03:53:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:19,042 INFO L225 Difference]: With dead ends: 94 [2022-11-03 03:53:19,042 INFO L226 Difference]: Without dead ends: 43 [2022-11-03 03:53:19,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:53:19,050 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:19,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:53:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-03 03:53:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-03 03:53:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 03:53:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-11-03 03:53:19,115 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 16 [2022-11-03 03:53:19,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:19,116 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-11-03 03:53:19,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-11-03 03:53:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:53:19,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:19,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:19,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:53:19,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -27539796, now seen corresponding path program 1 times [2022-11-03 03:53:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:19,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834914361] [2022-11-03 03:53:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:19,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834914361] [2022-11-03 03:53:19,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834914361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:19,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:19,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719068661] [2022-11-03 03:53:19,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:19,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:19,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:19,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:19,273 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:19,346 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2022-11-03 03:53:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 03:53:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:19,348 INFO L225 Difference]: With dead ends: 63 [2022-11-03 03:53:19,348 INFO L226 Difference]: Without dead ends: 35 [2022-11-03 03:53:19,348 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 [2022-11-03 03:53:19,350 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:19,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-03 03:53:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-03 03:53:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:53:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-11-03 03:53:19,358 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 17 [2022-11-03 03:53:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:19,358 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-11-03 03:53:19,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-11-03 03:53:19,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:53:19,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:19,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:19,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:53:19,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:19,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1817648900, now seen corresponding path program 1 times [2022-11-03 03:53:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:19,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835643480] [2022-11-03 03:53:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:19,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:19,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835643480] [2022-11-03 03:53:19,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835643480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:19,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:19,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703582151] [2022-11-03 03:53:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:19,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:19,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:19,627 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:19,828 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2022-11-03 03:53:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:53:19,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-03 03:53:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:19,830 INFO L225 Difference]: With dead ends: 99 [2022-11-03 03:53:19,830 INFO L226 Difference]: Without dead ends: 66 [2022-11-03 03:53:19,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:53:19,837 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:19,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 150 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-03 03:53:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2022-11-03 03:53:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 49 states have internal predecessors, (53), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 03:53:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-11-03 03:53:19,865 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 19 [2022-11-03 03:53:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:19,866 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-11-03 03:53:19,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-11-03 03:53:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 03:53:19,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:19,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:53:19,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2086819571, now seen corresponding path program 1 times [2022-11-03 03:53:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:19,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828326964] [2022-11-03 03:53:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:20,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828326964] [2022-11-03 03:53:20,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828326964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:20,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:20,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39015430] [2022-11-03 03:53:20,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:20,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:20,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:20,362 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:20,768 INFO L93 Difference]: Finished difference Result 287 states and 357 transitions. [2022-11-03 03:53:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:53:20,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-03 03:53:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:20,778 INFO L225 Difference]: With dead ends: 287 [2022-11-03 03:53:20,778 INFO L226 Difference]: Without dead ends: 227 [2022-11-03 03:53:20,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:53:20,788 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 140 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:20,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 182 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-03 03:53:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 187. [2022-11-03 03:53:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 140 states have internal predecessors, (156), 29 states have call successors, (29), 29 states have call predecessors, (29), 31 states have return successors, (41), 29 states have call predecessors, (41), 29 states have call successors, (41) [2022-11-03 03:53:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 226 transitions. [2022-11-03 03:53:20,834 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 226 transitions. Word has length 22 [2022-11-03 03:53:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:20,834 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 226 transitions. [2022-11-03 03:53:20,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 226 transitions. [2022-11-03 03:53:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 03:53:20,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:20,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:20,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:53:20,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1843176107, now seen corresponding path program 1 times [2022-11-03 03:53:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:20,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791928677] [2022-11-03 03:53:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:21,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:21,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791928677] [2022-11-03 03:53:21,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791928677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:21,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:21,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51865536] [2022-11-03 03:53:21,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:21,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:21,088 INFO L87 Difference]: Start difference. First operand 187 states and 226 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:21,265 INFO L93 Difference]: Finished difference Result 522 states and 632 transitions. [2022-11-03 03:53:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-03 03:53:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:21,268 INFO L225 Difference]: With dead ends: 522 [2022-11-03 03:53:21,268 INFO L226 Difference]: Without dead ends: 337 [2022-11-03 03:53:21,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:21,270 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 70 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:21,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 165 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-03 03:53:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 284. [2022-11-03 03:53:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 193 states have (on average 1.2124352331606219) internal successors, (234), 214 states have internal predecessors, (234), 42 states have call successors, (42), 40 states have call predecessors, (42), 48 states have return successors, (60), 42 states have call predecessors, (60), 42 states have call successors, (60) [2022-11-03 03:53:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 336 transitions. [2022-11-03 03:53:21,316 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 336 transitions. Word has length 25 [2022-11-03 03:53:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:21,316 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 336 transitions. [2022-11-03 03:53:21,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:53:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 336 transitions. [2022-11-03 03:53:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:53:21,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:21,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:21,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:53:21,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1989059275, now seen corresponding path program 1 times [2022-11-03 03:53:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:21,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097740317] [2022-11-03 03:53:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:53:21,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:53:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:53:21,398 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:53:21,398 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:53:21,399 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:53:21,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:53:21,405 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-03 03:53:21,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:53:21,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:53:21 BoogieIcfgContainer [2022-11-03 03:53:21,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:53:21,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:53:21,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:53:21,442 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:53:21,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:18" (3/4) ... [2022-11-03 03:53:21,445 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 03:53:21,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:53:21,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:53:21,495 INFO L158 Benchmark]: Toolchain (without parser) took 4427.02ms. Allocated memory was 117.4MB in the beginning and 169.9MB in the end (delta: 52.4MB). Free memory was 91.3MB in the beginning and 132.9MB in the end (delta: -41.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-03 03:53:21,495 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:53:21,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.78ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 84.7MB in the end (delta: 6.4MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-03 03:53:21,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.39ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 82.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:53:21,496 INFO L158 Benchmark]: Boogie Preprocessor took 55.00ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 80.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:53:21,496 INFO L158 Benchmark]: RCFGBuilder took 719.04ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 50.4MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-03 03:53:21,497 INFO L158 Benchmark]: TraceAbstraction took 2989.41ms. Allocated memory was 117.4MB in the beginning and 169.9MB in the end (delta: 52.4MB). Free memory was 49.8MB in the beginning and 137.1MB in the end (delta: -87.3MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2022-11-03 03:53:21,497 INFO L158 Benchmark]: Witness Printer took 52.24ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 132.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:53:21,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.78ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 84.7MB in the end (delta: 6.4MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.39ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 82.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.00ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 80.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 719.04ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 50.4MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2989.41ms. Allocated memory was 117.4MB in the beginning and 169.9MB in the end (delta: 52.4MB). Free memory was 49.8MB in the beginning and 137.1MB in the end (delta: -87.3MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Witness Printer took 52.24ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 132.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 155]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L260] int pumpRunning = 0; [L261] int systemActive = 1; [L465] int cleanupTimeShifts = 4; [L730] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L538] int retValue_acc ; [L539] int tmp ; [L543] FCALL select_helpers() [L544] FCALL select_features() [L545] CALL, EXPR valid_product() [L456] int retValue_acc ; [L459] retValue_acc = 1 [L460] return (retValue_acc); [L545] RET, EXPR valid_product() [L545] tmp = valid_product() [L547] COND TRUE \read(tmp) [L549] FCALL setup() [L550] CALL runTest() [L532] CALL test() [L191] int splverifierCounter ; [L192] int tmp ; [L193] int tmp___0 ; [L194] int tmp___1 ; [L195] int tmp___2 ; [L198] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L200] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L202] COND TRUE splverifierCounter < 4 [L208] tmp = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L212] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 [L212] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L218] tmp___0 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L222] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 [L222] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L228] tmp___2 = __VERIFIER_nondet_int() [L230] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=0, tmp___2=-1, waterLevel=2] [L245] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L267] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L274] COND TRUE \read(systemActive) [L276] CALL processEnvironment() [L296] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L299] COND TRUE ! pumpRunning [L301] CALL, EXPR isHighWaterLevel() [L393] int retValue_acc ; [L394] int tmp ; [L395] int tmp___0 ; [L399] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); [L399] RET, EXPR isHighWaterSensorDry() [L399] tmp = isHighWaterSensorDry() [L401] COND FALSE !(\read(tmp)) [L404] tmp___0 = 1 [L406] retValue_acc = tmp___0 [L407] return (retValue_acc); [L301] RET, EXPR isHighWaterLevel() [L301] tmp = isHighWaterLevel() [L303] COND TRUE \read(tmp) [L305] CALL activatePump() [L324] pumpRunning = 1 [L305] RET activatePump() [L276] RET processEnvironment() [L282] CALL __utac_acc__Specification1_spec__1() [L162] int tmp ; [L163] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L167] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] tmp = isMethaneLevelCritical() [L169] COND TRUE \read(tmp) [L171] CALL, EXPR isPumpRunning() [L348] int retValue_acc ; [L351] retValue_acc = pumpRunning [L352] return (retValue_acc); [L171] RET, EXPR isPumpRunning() [L171] tmp___0 = isPumpRunning() [L173] COND TRUE \read(tmp___0) [L175] CALL __automaton_fail() [L155] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 241 mSDsluCounter, 592 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 492 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 369 IncrementalHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 208 mSDtfsCounter, 369 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=5, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 97 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2022-11-03 03:53:21,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6a73d1-da6f-492f-8879-ce5f377854a3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE