./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1a2a4f6154f8b607411cb85c1a9c20d409d0ca16407a9f3bb2fc8f7ede01236 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:54:59,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:54:59,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:54:59,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:54:59,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:54:59,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:54:59,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:54:59,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:54:59,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:54:59,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:54:59,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:54:59,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:54:59,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:54:59,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:54:59,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:54:59,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:54:59,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:54:59,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:54:59,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:54:59,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:54:59,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:54:59,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:54:59,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:54:59,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:54:59,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:54:59,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:54:59,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:54:59,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:54:59,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:54:59,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:54:59,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:54:59,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:54:59,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:54:59,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:54:59,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:54:59,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:54:59,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:54:59,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:54:59,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:54:59,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:54:59,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:54:59,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:54:59,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:54:59,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:54:59,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:54:59,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:54:59,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:54:59,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:54:59,663 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:54:59,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:54:59,663 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:54:59,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:54:59,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:54:59,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:54:59,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:54:59,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:54:59,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:54:59,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:54:59,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:54:59,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:54:59,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:54:59,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:54:59,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:54:59,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:54:59,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:54:59,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:54:59,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:54:59,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:54:59,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:54:59,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:54:59,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:54:59,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:54:59,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:54:59,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:54:59,674 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_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1a2a4f6154f8b607411cb85c1a9c20d409d0ca16407a9f3bb2fc8f7ede01236 [2021-10-28 09:55:00,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:55:00,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:55:00,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:55:00,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:55:00,065 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:55:00,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2021-10-28 09:55:00,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/data/d9b04b87c/9369215bf8ed400ea050d36fd34fb26d/FLAGc8680cf3c [2021-10-28 09:55:00,884 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:55:00,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2021-10-28 09:55:00,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/data/d9b04b87c/9369215bf8ed400ea050d36fd34fb26d/FLAGc8680cf3c [2021-10-28 09:55:01,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/data/d9b04b87c/9369215bf8ed400ea050d36fd34fb26d [2021-10-28 09:55:01,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:55:01,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:55:01,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:55:01,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:55:01,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:55:01,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d795e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01, skipping insertion in model container [2021-10-28 09:55:01,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:55:01,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:55:01,557 WARN L228 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_30d4805e-25b7-4cad-a793-eb9088ea0191/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c[12584,12597] [2021-10-28 09:55:01,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:55:01,633 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:55:01,702 WARN L228 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_30d4805e-25b7-4cad-a793-eb9088ea0191/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c[12584,12597] [2021-10-28 09:55:01,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:55:01,752 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:55:01,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01 WrapperNode [2021-10-28 09:55:01,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:55:01,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:55:01,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:55:01,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:55:01,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:55:01,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:55:01,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:55:01,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:55:01,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:55:01,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:55:01,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:55:01,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:55:01,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (1/1) ... [2021-10-28 09:55:01,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:55:01,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:01,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:02,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:55:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:55:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:55:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:55:02,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:55:03,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:55:03,033 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-10-28 09:55:03,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:03 BoogieIcfgContainer [2021-10-28 09:55:03,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:55:03,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:55:03,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:55:03,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:55:03,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:55:01" (1/3) ... [2021-10-28 09:55:03,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a916d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:55:03, skipping insertion in model container [2021-10-28 09:55:03,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:01" (2/3) ... [2021-10-28 09:55:03,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a916d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:55:03, skipping insertion in model container [2021-10-28 09:55:03,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:03" (3/3) ... [2021-10-28 09:55:03,050 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2021-10-28 09:55:03,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:55:03,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:55:03,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:55:03,147 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:55:03,148 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:55:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:55:03,179 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:03,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:55:03,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1424204181, now seen corresponding path program 1 times [2021-10-28 09:55:03,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:03,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894933071] [2021-10-28 09:55:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:03,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:03,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:03,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894933071] [2021-10-28 09:55:03,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894933071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:03,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:03,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:55:03,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323836958] [2021-10-28 09:55:03,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:55:03,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:55:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:55:03,750 INFO L87 Difference]: Start difference. First operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:03,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:03,803 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2021-10-28 09:55:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:55:03,805 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-28 09:55:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:03,821 INFO L225 Difference]: With dead ends: 150 [2021-10-28 09:55:03,821 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:55:03,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:55:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:55:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 09:55:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 73 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-10-28 09:55:03,891 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2021-10-28 09:55:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:03,892 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-28 09:55:03,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:03,892 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-10-28 09:55:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:55:03,895 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:03,895 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:55:03,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:55:03,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -631654862, now seen corresponding path program 1 times [2021-10-28 09:55:03,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:03,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96664425] [2021-10-28 09:55:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:03,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:04,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:04,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96664425] [2021-10-28 09:55:04,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96664425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:04,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:04,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:55:04,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878851868] [2021-10-28 09:55:04,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:55:04,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:55:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:55:04,060 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-10-28 09:55:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:04,071 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-10-28 09:55:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:55:04,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 [2021-10-28 09:55:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:04,073 INFO L225 Difference]: With dead ends: 74 [2021-10-28 09:55:04,074 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 09:55:04,075 INFO L786 BasicCegarLoop]: 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 [2021-10-28 09:55:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 09:55:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-28 09:55:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2021-10-28 09:55:04,081 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2021-10-28 09:55:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:04,082 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2021-10-28 09:55:04,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2021-10-28 09:55:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2021-10-28 09:55:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:55:04,084 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:04,084 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:55:04,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:55:04,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2021-10-28 09:55:04,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:04,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150505044] [2021-10-28 09:55:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:04,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:04,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150505044] [2021-10-28 09:55:04,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150505044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:04,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:04,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:55:04,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466714262] [2021-10-28 09:55:04,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:55:04,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:55:04,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:55:04,268 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:04,344 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2021-10-28 09:55:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:55:04,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-10-28 09:55:04,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:04,348 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:55:04,348 INFO L226 Difference]: Without dead ends: 34 [2021-10-28 09:55:04,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:55:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-28 09:55:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-28 09:55:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2021-10-28 09:55:04,356 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2021-10-28 09:55:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:04,356 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2021-10-28 09:55:04,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2021-10-28 09:55:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:55:04,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:04,358 INFO L513 BasicCegarLoop]: 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] [2021-10-28 09:55:04,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:55:04,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2021-10-28 09:55:04,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:04,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012474555] [2021-10-28 09:55:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:04,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:04,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012474555] [2021-10-28 09:55:04,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012474555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:04,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:04,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:55:04,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297193123] [2021-10-28 09:55:04,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:55:04,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:04,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:55:04,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:55:04,458 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:04,482 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2021-10-28 09:55:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:55:04,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-10-28 09:55:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:04,485 INFO L225 Difference]: With dead ends: 83 [2021-10-28 09:55:04,485 INFO L226 Difference]: Without dead ends: 55 [2021-10-28 09:55:04,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:55:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-28 09:55:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-28 09:55:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 52 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2021-10-28 09:55:04,497 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2021-10-28 09:55:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:04,497 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2021-10-28 09:55:04,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2021-10-28 09:55:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:55:04,499 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:04,500 INFO L513 BasicCegarLoop]: 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, 1] [2021-10-28 09:55:04,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:55:04,500 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2021-10-28 09:55:04,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:04,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683186505] [2021-10-28 09:55:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:04,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:04,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683186505] [2021-10-28 09:55:04,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683186505] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:04,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:04,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:55:04,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412291542] [2021-10-28 09:55:04,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:55:04,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:55:04,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:55:04,638 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:04,724 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2021-10-28 09:55:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:55:04,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2021-10-28 09:55:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:04,727 INFO L225 Difference]: With dead ends: 139 [2021-10-28 09:55:04,727 INFO L226 Difference]: Without dead ends: 92 [2021-10-28 09:55:04,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:55:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-28 09:55:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-10-28 09:55:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2021-10-28 09:55:04,739 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2021-10-28 09:55:04,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:04,740 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2021-10-28 09:55:04,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2021-10-28 09:55:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:55:04,742 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:04,742 INFO L513 BasicCegarLoop]: 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, 1] [2021-10-28 09:55:04,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:55:04,743 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2021-10-28 09:55:04,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:04,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860522372] [2021-10-28 09:55:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:04,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:04,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:04,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860522372] [2021-10-28 09:55:04,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860522372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:04,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:04,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:55:04,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523928950] [2021-10-28 09:55:04,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:55:04,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:55:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:55:04,883 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:05,007 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2021-10-28 09:55:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:55:05,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2021-10-28 09:55:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:05,022 INFO L225 Difference]: With dead ends: 270 [2021-10-28 09:55:05,022 INFO L226 Difference]: Without dead ends: 220 [2021-10-28 09:55:05,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:55:05,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-28 09:55:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2021-10-28 09:55:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3838383838383839) internal successors, (137), 99 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2021-10-28 09:55:05,047 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2021-10-28 09:55:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:05,047 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2021-10-28 09:55:05,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2021-10-28 09:55:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:55:05,050 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:05,050 INFO L513 BasicCegarLoop]: 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, 1, 1] [2021-10-28 09:55:05,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:55:05,050 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1166654740, now seen corresponding path program 1 times [2021-10-28 09:55:05,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:05,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644913277] [2021-10-28 09:55:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:05,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:05,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:05,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644913277] [2021-10-28 09:55:05,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644913277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:05,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:05,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:55:05,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701089831] [2021-10-28 09:55:05,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:55:05,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:55:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:55:05,127 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:05,268 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2021-10-28 09:55:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:55:05,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2021-10-28 09:55:05,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:05,273 INFO L225 Difference]: With dead ends: 280 [2021-10-28 09:55:05,274 INFO L226 Difference]: Without dead ends: 278 [2021-10-28 09:55:05,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:55:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-28 09:55:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-10-28 09:55:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3737373737373737) internal successors, (136), 99 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2021-10-28 09:55:05,326 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2021-10-28 09:55:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:05,327 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2021-10-28 09:55:05,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2021-10-28 09:55:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:55:05,336 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:05,337 INFO L513 BasicCegarLoop]: 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, 1, 1] [2021-10-28 09:55:05,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:55:05,337 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash 72774503, now seen corresponding path program 1 times [2021-10-28 09:55:05,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:05,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883442199] [2021-10-28 09:55:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:05,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:05,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:05,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883442199] [2021-10-28 09:55:05,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883442199] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:05,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:05,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:55:05,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850966653] [2021-10-28 09:55:05,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:55:05,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:55:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:55:05,464 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:05,555 INFO L93 Difference]: Finished difference Result 276 states and 374 transitions. [2021-10-28 09:55:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:55:05,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 30 [2021-10-28 09:55:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:05,559 INFO L225 Difference]: With dead ends: 276 [2021-10-28 09:55:05,559 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 09:55:05,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:55:05,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 09:55:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 104. [2021-10-28 09:55:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3592233009708738) internal successors, (140), 103 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2021-10-28 09:55:05,594 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2021-10-28 09:55:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:05,595 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2021-10-28 09:55:05,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2021-10-28 09:55:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:55:05,597 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:05,597 INFO L513 BasicCegarLoop]: 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, 1, 1] [2021-10-28 09:55:05,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:55:05,599 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:05,600 INFO L85 PathProgramCache]: Analyzing trace with hash 330939941, now seen corresponding path program 1 times [2021-10-28 09:55:05,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:05,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046322430] [2021-10-28 09:55:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:05,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:05,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:55:05,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046322430] [2021-10-28 09:55:05,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046322430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:05,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:05,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:55:05,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154028238] [2021-10-28 09:55:05,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:55:05,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:55:05,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:55:05,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:55:05,679 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:05,727 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2021-10-28 09:55:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:55:05,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2021-10-28 09:55:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:05,730 INFO L225 Difference]: With dead ends: 250 [2021-10-28 09:55:05,731 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 09:55:05,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:55:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 09:55:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-28 09:55:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.3112582781456954) internal successors, (198), 151 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) [2021-10-28 09:55:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2021-10-28 09:55:05,770 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2021-10-28 09:55:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:05,770 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2021-10-28 09:55:05,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:55:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2021-10-28 09:55:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:55:05,776 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:05,777 INFO L513 BasicCegarLoop]: 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, 1, 1, 1] [2021-10-28 09:55:05,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:55:05,777 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:55:05,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1676876253, now seen corresponding path program 1 times [2021-10-28 09:55:05,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:55:05,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596319545] [2021-10-28 09:55:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:05,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:55:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:05,901 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:55:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:55:06,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:55:06,061 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:55:06,063 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:55:06,065 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:55:06,066 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:55:06,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:55:06,071 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:55:06,076 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:55:06,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:55:06 BoogieIcfgContainer [2021-10-28 09:55:06,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:55:06,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:55:06,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:55:06,254 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:55:06,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:03" (3/4) ... [2021-10-28 09:55:06,257 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:55:06,413 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:55:06,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:55:06,415 INFO L168 Benchmark]: Toolchain (without parser) took 5234.50 ms. Allocated memory was 134.2 MB in the beginning and 178.3 MB in the end (delta: 44.0 MB). Free memory was 101.2 MB in the beginning and 98.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:06,416 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 37.3 MB in the beginning and 37.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:06,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.19 ms. Allocated memory is still 134.2 MB. Free memory was 100.9 MB in the beginning and 103.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:06,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.85 ms. Allocated memory is still 134.2 MB. Free memory was 103.0 MB in the beginning and 99.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:06,418 INFO L168 Benchmark]: Boogie Preprocessor took 85.92 ms. Allocated memory is still 134.2 MB. Free memory was 99.6 MB in the beginning and 97.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:06,418 INFO L168 Benchmark]: RCFGBuilder took 1085.81 ms. Allocated memory is still 134.2 MB. Free memory was 97.5 MB in the beginning and 58.2 MB in the end (delta: 39.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:06,419 INFO L168 Benchmark]: TraceAbstraction took 3214.02 ms. Allocated memory was 134.2 MB in the beginning and 178.3 MB in the end (delta: 44.0 MB). Free memory was 57.6 MB in the beginning and 111.4 MB in the end (delta: -53.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:55:06,419 INFO L168 Benchmark]: Witness Printer took 159.98 ms. Allocated memory is still 178.3 MB. Free memory was 111.4 MB in the beginning and 98.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:55:06,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 37.3 MB in the beginning and 37.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 565.19 ms. Allocated memory is still 134.2 MB. Free memory was 100.9 MB in the beginning and 103.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.85 ms. Allocated memory is still 134.2 MB. Free memory was 103.0 MB in the beginning and 99.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.92 ms. Allocated memory is still 134.2 MB. Free memory was 99.6 MB in the beginning and 97.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1085.81 ms. Allocated memory is still 134.2 MB. Free memory was 97.5 MB in the beginning and 58.2 MB in the end (delta: 39.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3214.02 ms. Allocated memory was 134.2 MB in the beginning and 178.3 MB in the end (delta: 44.0 MB). Free memory was 57.6 MB in the beginning and 111.4 MB in the end (delta: -53.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 159.98 ms. Allocated memory is still 178.3 MB. Free memory was 111.4 MB in the beginning and 98.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * 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: 524]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L323] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int waterLevel = 1; [L535] int methaneLevelCritical = 0; [L699] int pumpRunning = 0; [L700] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] int retValue_acc ; [L915] retValue_acc = 1 [L916] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L630] int splverifierCounter ; [L631] int tmp ; [L632] int tmp___0 ; [L633] int tmp___1 ; [L634] int tmp___2 ; [L637] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L639] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L641] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L647] tmp = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L552] COND TRUE waterLevel < 2 [L553] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L657] tmp___0 = __VERIFIER_nondet_int() [L659] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND FALSE !(\read(methaneLevelCritical)) [L567] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L667] tmp___2 = __VERIFIER_nondet_int() [L669] COND TRUE \read(tmp___2) [L855] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L707] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L714] COND TRUE \read(systemActive) [L736] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L739] COND TRUE ! pumpRunning [L833] int retValue_acc ; [L834] int tmp ; [L835] int tmp___0 ; [L614] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L617] COND FALSE !(waterLevel < 2) [L621] retValue_acc = 0 [L622] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L839] tmp = isHighWaterSensorDry() [L841] COND FALSE !(\read(tmp)) [L844] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L846] retValue_acc = tmp___0 [L847] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L741] tmp = isHighWaterLevel() [L743] COND TRUE \read(tmp) [L764] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L861] int tmp ; [L862] int tmp___0 ; [L573] int retValue_acc ; [L576] retValue_acc = methaneLevelCritical [L577] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L866] tmp = isMethaneLevelCritical() [L868] COND TRUE \read(tmp) [L788] int retValue_acc ; [L791] retValue_acc = pumpRunning [L792] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L870] tmp___0 = isPumpRunning() [L872] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L524] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 524]: 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: 524]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 575 SDtfs, 881 SDslu, 774 SDs, 0 SdLazy, 107 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=9, InterpolantAutomatonStates: 46, 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, 9 MinimizatonAttempts, 414 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2021-10-28 09:55:06,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4805e-25b7-4cad-a793-eb9088ea0191/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...