./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3236d89cedc127e9d85364eeaf0ba1493a1eae64 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 18:50:25,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:50:25,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:50:25,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:50:25,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:50:25,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:50:25,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:50:25,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:50:25,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:50:25,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:50:25,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:50:25,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:50:25,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:50:25,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:50:25,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:50:25,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:50:25,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:50:25,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:50:25,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:50:25,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:50:25,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:50:25,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:50:25,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:50:25,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:50:25,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:50:25,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:50:25,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:50:25,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:50:25,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:50:25,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:50:25,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:50:25,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:50:25,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:50:25,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:50:25,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:50:25,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:50:25,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:50:25,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:50:25,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:50:25,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:50:25,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:50:25,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:50:25,871 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:50:25,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:50:25,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:50:25,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:50:25,873 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:50:25,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:50:25,873 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:50:25,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:50:25,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:50:25,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:50:25,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:50:25,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:50:25,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:50:25,875 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:50:25,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:50:25,875 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:50:25,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:50:25,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:50:25,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:50:25,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:50:25,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:50:25,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:50:25,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer 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(__VERIFIER_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 -> 3236d89cedc127e9d85364eeaf0ba1493a1eae64 [2019-12-07 18:50:25,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:50:25,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:50:25,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:50:25,992 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:50:25,992 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:50:25,993 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2019-12-07 18:50:26,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/data/b85cf91c6/54bdd120b50a4264827e3a05cfb13e4b/FLAG463426fec [2019-12-07 18:50:26,402 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:50:26,402 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2019-12-07 18:50:26,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/data/b85cf91c6/54bdd120b50a4264827e3a05cfb13e4b/FLAG463426fec [2019-12-07 18:50:26,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/data/b85cf91c6/54bdd120b50a4264827e3a05cfb13e4b [2019-12-07 18:50:26,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:50:26,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:50:26,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:50:26,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:50:26,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:50:26,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e4e238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26, skipping insertion in model container [2019-12-07 18:50:26,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:50:26,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:50:26,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:50:26,689 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:50:26,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:50:26,756 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:50:26,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26 WrapperNode [2019-12-07 18:50:26,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:50:26,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:50:26,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:50:26,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:50:26,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:50:26,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:50:26,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:50:26,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:50:26,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... [2019-12-07 18:50:26,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:50:26,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:50:26,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:50:26,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:50:26,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:50:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:50:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 18:50:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:50:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:50:27,415 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:50:27,415 INFO L287 CfgBuilder]: Removed 282 assume(true) statements. [2019-12-07 18:50:27,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:50:27 BoogieIcfgContainer [2019-12-07 18:50:27,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:50:27,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:50:27,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:50:27,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:50:27,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:50:26" (1/3) ... [2019-12-07 18:50:27,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f53c9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:50:27, skipping insertion in model container [2019-12-07 18:50:27,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:50:26" (2/3) ... [2019-12-07 18:50:27,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f53c9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:50:27, skipping insertion in model container [2019-12-07 18:50:27,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:50:27" (3/3) ... [2019-12-07 18:50:27,422 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2019-12-07 18:50:27,429 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:50:27,433 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 18:50:27,441 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 18:50:27,458 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:50:27,458 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:50:27,458 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:50:27,458 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:50:27,458 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:50:27,458 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:50:27,458 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:50:27,458 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:50:27,472 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-12-07 18:50:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 18:50:27,476 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:27,477 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:27,477 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:27,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:27,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1937289636, now seen corresponding path program 1 times [2019-12-07 18:50:27,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:27,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859512654] [2019-12-07 18:50:27,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:27,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859512654] [2019-12-07 18:50:27,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:27,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:50:27,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13847486] [2019-12-07 18:50:27,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:50:27,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:27,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:50:27,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:50:27,654 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 2 states. [2019-12-07 18:50:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:27,681 INFO L93 Difference]: Finished difference Result 376 states and 575 transitions. [2019-12-07 18:50:27,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:50:27,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 18:50:27,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:27,690 INFO L225 Difference]: With dead ends: 376 [2019-12-07 18:50:27,690 INFO L226 Difference]: Without dead ends: 187 [2019-12-07 18:50:27,693 INFO L630 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 [2019-12-07 18:50:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-12-07 18:50:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2019-12-07 18:50:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-12-07 18:50:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2019-12-07 18:50:27,726 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 16 [2019-12-07 18:50:27,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:27,727 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2019-12-07 18:50:27,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:50:27,727 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2019-12-07 18:50:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 18:50:27,728 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:27,728 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:50:27,728 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash 890532739, now seen corresponding path program 1 times [2019-12-07 18:50:27,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:27,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024063354] [2019-12-07 18:50:27,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:27,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024063354] [2019-12-07 18:50:27,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:27,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:50:27,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308083258] [2019-12-07 18:50:27,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:50:27,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:27,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:50:27,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:50:27,788 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand 3 states. [2019-12-07 18:50:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:27,799 INFO L93 Difference]: Finished difference Result 187 states and 279 transitions. [2019-12-07 18:50:27,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:50:27,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 18:50:27,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:27,800 INFO L225 Difference]: With dead ends: 187 [2019-12-07 18:50:27,800 INFO L226 Difference]: Without dead ends: 73 [2019-12-07 18:50:27,801 INFO L630 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 [2019-12-07 18:50:27,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-12-07 18:50:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2019-12-07 18:50:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 18:50:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2019-12-07 18:50:27,807 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 17 [2019-12-07 18:50:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:27,807 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2019-12-07 18:50:27,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:50:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2019-12-07 18:50:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 18:50:27,808 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:27,808 INFO L410 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] [2019-12-07 18:50:27,808 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:27,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1577730230, now seen corresponding path program 1 times [2019-12-07 18:50:27,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:27,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933045965] [2019-12-07 18:50:27,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:27,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933045965] [2019-12-07 18:50:27,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:27,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:50:27,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480510853] [2019-12-07 18:50:27,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:50:27,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:27,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:50:27,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:50:27,860 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 3 states. [2019-12-07 18:50:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:27,886 INFO L93 Difference]: Finished difference Result 207 states and 312 transitions. [2019-12-07 18:50:27,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:50:27,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-12-07 18:50:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:27,888 INFO L225 Difference]: With dead ends: 207 [2019-12-07 18:50:27,888 INFO L226 Difference]: Without dead ends: 140 [2019-12-07 18:50:27,889 INFO L630 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 [2019-12-07 18:50:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-12-07 18:50:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2019-12-07 18:50:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-12-07 18:50:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 205 transitions. [2019-12-07 18:50:27,902 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 205 transitions. Word has length 22 [2019-12-07 18:50:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:27,902 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 205 transitions. [2019-12-07 18:50:27,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:50:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 205 transitions. [2019-12-07 18:50:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 18:50:27,904 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:27,904 INFO L410 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] [2019-12-07 18:50:27,904 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:27,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:27,904 INFO L82 PathProgramCache]: Analyzing trace with hash 792163456, now seen corresponding path program 1 times [2019-12-07 18:50:27,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:27,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159172070] [2019-12-07 18:50:27,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:27,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159172070] [2019-12-07 18:50:27,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:27,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:50:27,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63589411] [2019-12-07 18:50:27,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:50:27,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:27,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:50:27,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:50:27,949 INFO L87 Difference]: Start difference. First operand 136 states and 205 transitions. Second operand 3 states. [2019-12-07 18:50:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:27,985 INFO L93 Difference]: Finished difference Result 283 states and 430 transitions. [2019-12-07 18:50:27,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:50:27,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-12-07 18:50:27,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:27,986 INFO L225 Difference]: With dead ends: 283 [2019-12-07 18:50:27,987 INFO L226 Difference]: Without dead ends: 153 [2019-12-07 18:50:27,987 INFO L630 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 [2019-12-07 18:50:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-12-07 18:50:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2019-12-07 18:50:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-12-07 18:50:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2019-12-07 18:50:27,997 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 25 [2019-12-07 18:50:27,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:27,997 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2019-12-07 18:50:27,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:50:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2019-12-07 18:50:27,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 18:50:27,998 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:27,998 INFO L410 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] [2019-12-07 18:50:27,998 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:27,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1022954699, now seen corresponding path program 1 times [2019-12-07 18:50:27,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:27,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60527351] [2019-12-07 18:50:27,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:28,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60527351] [2019-12-07 18:50:28,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:28,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:50:28,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365013313] [2019-12-07 18:50:28,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:50:28,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:50:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:50:28,039 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand 5 states. [2019-12-07 18:50:28,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:28,111 INFO L93 Difference]: Finished difference Result 763 states and 1120 transitions. [2019-12-07 18:50:28,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:50:28,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-12-07 18:50:28,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:28,114 INFO L225 Difference]: With dead ends: 763 [2019-12-07 18:50:28,114 INFO L226 Difference]: Without dead ends: 618 [2019-12-07 18:50:28,115 INFO L630 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 [2019-12-07 18:50:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-12-07 18:50:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 286. [2019-12-07 18:50:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2019-12-07 18:50:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 411 transitions. [2019-12-07 18:50:28,135 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 411 transitions. Word has length 25 [2019-12-07 18:50:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:28,136 INFO L462 AbstractCegarLoop]: Abstraction has 286 states and 411 transitions. [2019-12-07 18:50:28,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:50:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 411 transitions. [2019-12-07 18:50:28,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 18:50:28,137 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:28,137 INFO L410 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] [2019-12-07 18:50:28,137 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:28,138 INFO L82 PathProgramCache]: Analyzing trace with hash 819147605, now seen corresponding path program 1 times [2019-12-07 18:50:28,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:28,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314402036] [2019-12-07 18:50:28,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:28,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314402036] [2019-12-07 18:50:28,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:28,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:50:28,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116163529] [2019-12-07 18:50:28,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:50:28,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:28,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:50:28,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:50:28,181 INFO L87 Difference]: Start difference. First operand 286 states and 411 transitions. Second operand 5 states. [2019-12-07 18:50:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:28,302 INFO L93 Difference]: Finished difference Result 832 states and 1198 transitions. [2019-12-07 18:50:28,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:50:28,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-12-07 18:50:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:28,306 INFO L225 Difference]: With dead ends: 832 [2019-12-07 18:50:28,306 INFO L226 Difference]: Without dead ends: 830 [2019-12-07 18:50:28,307 INFO L630 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 [2019-12-07 18:50:28,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2019-12-07 18:50:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 286. [2019-12-07 18:50:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2019-12-07 18:50:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 409 transitions. [2019-12-07 18:50:28,339 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 409 transitions. Word has length 26 [2019-12-07 18:50:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:28,339 INFO L462 AbstractCegarLoop]: Abstraction has 286 states and 409 transitions. [2019-12-07 18:50:28,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:50:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 409 transitions. [2019-12-07 18:50:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 18:50:28,341 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:28,341 INFO L410 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, 1] [2019-12-07 18:50:28,341 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:28,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:28,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1010263109, now seen corresponding path program 1 times [2019-12-07 18:50:28,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:28,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906582642] [2019-12-07 18:50:28,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:28,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906582642] [2019-12-07 18:50:28,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:28,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:50:28,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683728779] [2019-12-07 18:50:28,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:50:28,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:50:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:50:28,385 INFO L87 Difference]: Start difference. First operand 286 states and 409 transitions. Second operand 5 states. [2019-12-07 18:50:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:28,460 INFO L93 Difference]: Finished difference Result 766 states and 1076 transitions. [2019-12-07 18:50:28,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:50:28,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-12-07 18:50:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:28,463 INFO L225 Difference]: With dead ends: 766 [2019-12-07 18:50:28,463 INFO L226 Difference]: Without dead ends: 486 [2019-12-07 18:50:28,463 INFO L630 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 [2019-12-07 18:50:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-12-07 18:50:28,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 322. [2019-12-07 18:50:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-12-07 18:50:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 445 transitions. [2019-12-07 18:50:28,478 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 445 transitions. Word has length 32 [2019-12-07 18:50:28,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:28,478 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 445 transitions. [2019-12-07 18:50:28,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:50:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 445 transitions. [2019-12-07 18:50:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 18:50:28,479 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:28,479 INFO L410 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, 1] [2019-12-07 18:50:28,480 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1403290119, now seen corresponding path program 1 times [2019-12-07 18:50:28,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:28,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633242930] [2019-12-07 18:50:28,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:28,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633242930] [2019-12-07 18:50:28,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:28,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:50:28,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069712827] [2019-12-07 18:50:28,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:50:28,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:28,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:50:28,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:50:28,514 INFO L87 Difference]: Start difference. First operand 322 states and 445 transitions. Second operand 5 states. [2019-12-07 18:50:28,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:28,621 INFO L93 Difference]: Finished difference Result 882 states and 1193 transitions. [2019-12-07 18:50:28,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:50:28,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-12-07 18:50:28,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:28,624 INFO L225 Difference]: With dead ends: 882 [2019-12-07 18:50:28,624 INFO L226 Difference]: Without dead ends: 566 [2019-12-07 18:50:28,624 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:50:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2019-12-07 18:50:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 346. [2019-12-07 18:50:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2019-12-07 18:50:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 469 transitions. [2019-12-07 18:50:28,640 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 469 transitions. Word has length 32 [2019-12-07 18:50:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:28,641 INFO L462 AbstractCegarLoop]: Abstraction has 346 states and 469 transitions. [2019-12-07 18:50:28,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:50:28,641 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 469 transitions. [2019-12-07 18:50:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 18:50:28,641 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:28,641 INFO L410 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, 1] [2019-12-07 18:50:28,642 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1145124681, now seen corresponding path program 1 times [2019-12-07 18:50:28,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:28,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728500747] [2019-12-07 18:50:28,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:50:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:50:28,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728500747] [2019-12-07 18:50:28,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:50:28,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:50:28,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536442882] [2019-12-07 18:50:28,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:50:28,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:50:28,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:50:28,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:50:28,665 INFO L87 Difference]: Start difference. First operand 346 states and 469 transitions. Second operand 3 states. [2019-12-07 18:50:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:50:28,696 INFO L93 Difference]: Finished difference Result 794 states and 1070 transitions. [2019-12-07 18:50:28,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:50:28,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-12-07 18:50:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:50:28,698 INFO L225 Difference]: With dead ends: 794 [2019-12-07 18:50:28,698 INFO L226 Difference]: Without dead ends: 454 [2019-12-07 18:50:28,699 INFO L630 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 [2019-12-07 18:50:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-12-07 18:50:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2019-12-07 18:50:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-12-07 18:50:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 599 transitions. [2019-12-07 18:50:28,718 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 599 transitions. Word has length 32 [2019-12-07 18:50:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:50:28,718 INFO L462 AbstractCegarLoop]: Abstraction has 454 states and 599 transitions. [2019-12-07 18:50:28,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:50:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 599 transitions. [2019-12-07 18:50:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 18:50:28,719 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:50:28,719 INFO L410 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, 1, 1] [2019-12-07 18:50:28,719 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:50:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:50:28,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2078796085, now seen corresponding path program 1 times [2019-12-07 18:50:28,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:50:28,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655525902] [2019-12-07 18:50:28,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:50:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:50:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:50:28,818 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:50:28,819 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:50:28,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:50:28 BoogieIcfgContainer [2019-12-07 18:50:28,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:50:28,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:50:28,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:50:28,882 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:50:28,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:50:27" (3/4) ... [2019-12-07 18:50:28,884 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:50:28,941 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ff7e0b35-0309-4744-a9fd-7e58e674bd62/bin/uautomizer/witness.graphml [2019-12-07 18:50:28,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:50:28,943 INFO L168 Benchmark]: Toolchain (without parser) took 2519.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 936.7 MB in the beginning and 905.3 MB in the end (delta: 31.4 MB). Peak memory consumption was 119.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:28,943 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:50:28,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -137.9 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:28,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:28,944 INFO L168 Benchmark]: Boogie Preprocessor took 38.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:28,944 INFO L168 Benchmark]: RCFGBuilder took 569.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 973.3 MB in the end (delta: 90.5 MB). Peak memory consumption was 90.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:28,944 INFO L168 Benchmark]: TraceAbstraction took 1464.57 ms. Allocated memory is still 1.1 GB. Free memory was 973.3 MB in the beginning and 919.6 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:28,945 INFO L168 Benchmark]: Witness Printer took 59.74 ms. Allocated memory is still 1.1 GB. Free memory was 919.6 MB in the beginning and 905.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:50:28,946 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -137.9 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 569.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 973.3 MB in the end (delta: 90.5 MB). Peak memory consumption was 90.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1464.57 ms. Allocated memory is still 1.1 GB. Free memory was 973.3 MB in the beginning and 919.6 MB in the end (delta: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * Witness Printer took 59.74 ms. Allocated memory is still 1.1 GB. Free memory was 919.6 MB in the beginning and 905.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int pumpRunning = 0; [L491] int systemActive = 1; [L811] int cleanupTimeShifts = 4; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L884] int retValue_acc ; [L885] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L766] int retValue_acc ; [L769] retValue_acc = 1 [L770] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L891] tmp = valid_product() [L893] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L422] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L424] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L938] COND FALSE !(\read(methaneLevelCritical)) [L941] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L732] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L498] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L505] COND TRUE \read(systemActive) [L579] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L582] COND FALSE !(\read(pumpRunning)) [L553] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L556] COND FALSE !(\read(pumpRunning)) [L527] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L530] COND TRUE ! pumpRunning [L676] int retValue_acc ; [L677] int tmp ; [L678] int tmp___0 ; [L988] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L991] COND FALSE !(waterLevel < 2) [L995] retValue_acc = 0 [L996] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] tmp = isHighWaterSensorDry() [L684] COND FALSE !(\read(tmp)) [L687] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L689] retValue_acc = tmp___0 [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] tmp = isHighWaterLevel() [L534] COND TRUE \read(tmp) [L607] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L777] int tmp ; [L778] int tmp___0 ; [L947] int retValue_acc ; [L950] retValue_acc = methaneLevelCritical [L951] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] tmp = isMethaneLevelCritical() [L784] COND TRUE \read(tmp) [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L786] tmp___0 = isPumpRunning() [L788] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L806] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 191 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1184 SDtfs, 1469 SDslu, 1535 SDs, 0 SdLazy, 215 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=454occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 1266 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 10538 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...