./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e24917ef8695200a643e71e238ee3c2cc9fb2120 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e24917ef8695200a643e71e238ee3c2cc9fb2120 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:30:45,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:30:45,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:30:45,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:30:45,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:30:45,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:30:45,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:30:45,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:30:45,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:30:45,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:30:45,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:30:45,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:30:45,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:30:45,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:30:45,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:30:45,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:30:45,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:30:45,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:30:45,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:30:45,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:30:45,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:30:45,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:30:45,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:30:45,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:30:45,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:30:45,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:30:45,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:30:45,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:30:45,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:30:45,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:30:45,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:30:45,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:30:45,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:30:45,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:30:45,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:30:45,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:30:45,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:30:45,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:30:45,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:30:45,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:30:45,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:30:45,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:30:45,264 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:30:45,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:30:45,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:30:45,275 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:30:45,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:30:45,275 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:30:45,276 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:30:45,276 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:30:45,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:30:45,276 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:30:45,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:30:45,277 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:30:45,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:30:45,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:30:45,277 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:30:45,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:30:45,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:30:45,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:30:45,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:30:45,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:30:45,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:30:45,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:30:45,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:30:45,280 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:30:45,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:30:45,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:30:45,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:30:45,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:30:45,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:30:45,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:30:45,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:30:45,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:30:45,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:30:45,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:30:45,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:30:45,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:30:45,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:30:45,283 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e24917ef8695200a643e71e238ee3c2cc9fb2120 [2019-11-26 02:30:45,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:30:45,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:30:45,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:30:45,471 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:30:45,471 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:30:45,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-26 02:30:45,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/ce1e333d5/a68b38ececa2452e8163df0f39b63f20/FLAG3951960c0 [2019-11-26 02:30:45,999 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:30:46,000 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-26 02:30:46,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/ce1e333d5/a68b38ececa2452e8163df0f39b63f20/FLAG3951960c0 [2019-11-26 02:30:46,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/ce1e333d5/a68b38ececa2452e8163df0f39b63f20 [2019-11-26 02:30:46,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:30:46,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:30:46,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:46,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:30:46,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:30:46,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ba139c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46, skipping insertion in model container [2019-11-26 02:30:46,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:46,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:30:46,429 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:30:46,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:46,827 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:30:46,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:46,964 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:30:46,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46 WrapperNode [2019-11-26 02:30:46,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:46,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:46,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:30:46,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:30:46,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:47,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:30:47,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:30:47,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:30:47,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... [2019-11-26 02:30:47,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:30:47,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:30:47,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:30:47,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:30:47,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/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 [2019-11-26 02:30:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-26 02:30:47,108 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-26 02:30:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-26 02:30:47,108 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-26 02:30:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:30:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:30:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:30:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:30:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:30:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:30:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:30:47,111 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:30:47,487 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:30:47,487 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:30:47,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:47 BoogieIcfgContainer [2019-11-26 02:30:47,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:30:47,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:30:47,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:30:47,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:30:47,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:30:46" (1/3) ... [2019-11-26 02:30:47,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba2640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:47, skipping insertion in model container [2019-11-26 02:30:47,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:46" (2/3) ... [2019-11-26 02:30:47,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba2640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:47, skipping insertion in model container [2019-11-26 02:30:47,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:47" (3/3) ... [2019-11-26 02:30:47,495 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2019-11-26 02:30:47,535 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,536 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,536 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,536 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,537 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,538 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,539 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,539 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,539 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,540 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,540 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,540 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,541 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,541 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,541 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,541 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,542 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,543 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,543 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,543 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,544 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,545 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,545 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,545 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,546 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,546 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,546 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,546 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,546 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,546 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,546 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,547 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,547 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,547 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,547 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,547 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,547 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,547 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,548 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,549 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,549 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,549 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,549 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,549 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,549 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,549 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,550 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,550 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,550 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,550 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,550 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,550 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,551 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,551 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,551 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,551 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,551 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,552 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,552 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,552 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,552 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,552 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,552 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,553 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,553 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,553 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,553 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,553 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,554 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,554 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,554 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,554 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,554 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,554 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,555 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,555 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,555 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:47,584 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:30:47,584 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:30:47,594 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:30:47,603 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:30:47,619 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:30:47,619 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:30:47,619 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:30:47,620 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:30:47,620 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:30:47,620 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:30:47,620 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:30:47,620 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:30:47,630 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 93 transitions [2019-11-26 02:30:47,733 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1013 states. [2019-11-26 02:30:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states. [2019-11-26 02:30:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-26 02:30:47,743 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:47,744 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] [2019-11-26 02:30:47,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:47,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:47,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1140660711, now seen corresponding path program 1 times [2019-11-26 02:30:47,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:47,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096783859] [2019-11-26 02:30:47,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:48,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096783859] [2019-11-26 02:30:48,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:48,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:30:48,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074333038] [2019-11-26 02:30:48,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:30:48,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:30:48,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:30:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:30:48,095 INFO L87 Difference]: Start difference. First operand 1013 states. Second operand 5 states. [2019-11-26 02:30:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:48,297 INFO L93 Difference]: Finished difference Result 1778 states and 5126 transitions. [2019-11-26 02:30:48,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:30:48,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-26 02:30:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:48,330 INFO L225 Difference]: With dead ends: 1778 [2019-11-26 02:30:48,331 INFO L226 Difference]: Without dead ends: 500 [2019-11-26 02:30:48,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:30:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-26 02:30:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 388. [2019-11-26 02:30:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-11-26 02:30:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 993 transitions. [2019-11-26 02:30:48,421 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 993 transitions. Word has length 20 [2019-11-26 02:30:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:48,421 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 993 transitions. [2019-11-26 02:30:48,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:30:48,422 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 993 transitions. [2019-11-26 02:30:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:30:48,423 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:48,424 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] [2019-11-26 02:30:48,424 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1489054159, now seen corresponding path program 1 times [2019-11-26 02:30:48,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:48,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594388227] [2019-11-26 02:30:48,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:48,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594388227] [2019-11-26 02:30:48,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:48,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:30:48,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831085960] [2019-11-26 02:30:48,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:30:48,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:30:48,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:30:48,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:30:48,587 INFO L87 Difference]: Start difference. First operand 388 states and 993 transitions. Second operand 5 states. [2019-11-26 02:30:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:48,696 INFO L93 Difference]: Finished difference Result 563 states and 1392 transitions. [2019-11-26 02:30:48,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:30:48,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-26 02:30:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:48,700 INFO L225 Difference]: With dead ends: 563 [2019-11-26 02:30:48,700 INFO L226 Difference]: Without dead ends: 354 [2019-11-26 02:30:48,701 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:30:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-11-26 02:30:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2019-11-26 02:30:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-11-26 02:30:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 883 transitions. [2019-11-26 02:30:48,734 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 883 transitions. Word has length 23 [2019-11-26 02:30:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:48,734 INFO L462 AbstractCegarLoop]: Abstraction has 354 states and 883 transitions. [2019-11-26 02:30:48,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:30:48,735 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 883 transitions. [2019-11-26 02:30:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:30:48,741 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:48,741 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] [2019-11-26 02:30:48,742 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash 913376083, now seen corresponding path program 1 times [2019-11-26 02:30:48,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:48,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048356786] [2019-11-26 02:30:48,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:48,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048356786] [2019-11-26 02:30:48,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:48,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:30:48,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427386580] [2019-11-26 02:30:48,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:30:48,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:30:48,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:30:48,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:30:48,848 INFO L87 Difference]: Start difference. First operand 354 states and 883 transitions. Second operand 5 states. [2019-11-26 02:30:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:48,936 INFO L93 Difference]: Finished difference Result 431 states and 1037 transitions. [2019-11-26 02:30:48,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:30:48,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-26 02:30:48,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:48,940 INFO L225 Difference]: With dead ends: 431 [2019-11-26 02:30:48,940 INFO L226 Difference]: Without dead ends: 301 [2019-11-26 02:30:48,940 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:30:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-26 02:30:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2019-11-26 02:30:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-11-26 02:30:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 709 transitions. [2019-11-26 02:30:48,956 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 709 transitions. Word has length 23 [2019-11-26 02:30:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:48,957 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 709 transitions. [2019-11-26 02:30:48,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:30:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 709 transitions. [2019-11-26 02:30:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:30:48,958 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:48,958 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] [2019-11-26 02:30:48,958 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:48,959 INFO L82 PathProgramCache]: Analyzing trace with hash 597396229, now seen corresponding path program 1 times [2019-11-26 02:30:48,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:48,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520067983] [2019-11-26 02:30:48,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:49,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520067983] [2019-11-26 02:30:49,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:49,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:30:49,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736101913] [2019-11-26 02:30:49,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:30:49,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:30:49,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:30:49,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:30:49,083 INFO L87 Difference]: Start difference. First operand 288 states and 709 transitions. Second operand 6 states. [2019-11-26 02:30:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:49,234 INFO L93 Difference]: Finished difference Result 448 states and 1078 transitions. [2019-11-26 02:30:49,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:30:49,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-26 02:30:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:49,238 INFO L225 Difference]: With dead ends: 448 [2019-11-26 02:30:49,239 INFO L226 Difference]: Without dead ends: 320 [2019-11-26 02:30:49,239 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:30:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-26 02:30:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-26 02:30:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-26 02:30:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 773 transitions. [2019-11-26 02:30:49,252 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 773 transitions. Word has length 26 [2019-11-26 02:30:49,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:49,253 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 773 transitions. [2019-11-26 02:30:49,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:30:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 773 transitions. [2019-11-26 02:30:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-26 02:30:49,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:49,254 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:49,254 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:49,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash -66636472, now seen corresponding path program 1 times [2019-11-26 02:30:49,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:30:49,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039791052] [2019-11-26 02:30:49,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:30:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:49,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039791052] [2019-11-26 02:30:49,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217395851] [2019-11-26 02:30:49,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:49,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:30:49,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:49,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:49,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:49,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:49,544 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:49,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:49,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:49,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:49,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:49,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1682086576] [2019-11-26 02:30:49,616 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: UnsupportedOperationException [2019-11-26 02:30:49,821 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:49,821 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:269) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1556) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:30:49,826 INFO L168 Benchmark]: Toolchain (without parser) took 3473.97 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 944.8 MB in the beginning and 853.8 MB in the end (delta: 91.0 MB). Peak memory consumption was 209.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:49,826 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:30:49,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -135.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:49,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:30:49,830 INFO L168 Benchmark]: Boogie Preprocessor took 25.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:30:49,832 INFO L168 Benchmark]: RCFGBuilder took 434.04 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:49,835 INFO L168 Benchmark]: TraceAbstraction took 2334.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 853.8 MB in the end (delta: 198.1 MB). Peak memory consumption was 198.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:30:49,837 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 613.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -135.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 434.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2334.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 853.8 MB in the end (delta: 198.1 MB). Peak memory consumption was 198.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:30:51,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:30:51,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:30:51,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:30:51,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:30:51,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:30:51,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:30:51,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:30:51,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:30:51,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:30:51,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:30:51,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:30:51,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:30:51,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:30:51,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:30:51,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:30:51,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:30:51,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:30:51,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:30:51,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:30:51,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:30:51,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:30:51,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:30:51,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:30:51,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:30:51,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:30:51,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:30:51,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:30:51,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:30:51,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:30:51,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:30:51,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:30:51,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:30:51,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:30:51,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:30:51,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:30:51,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:30:51,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:30:51,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:30:51,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:30:51,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:30:51,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:30:51,767 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:30:51,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:30:51,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:30:51,770 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:30:51,771 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:30:51,771 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:30:51,771 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:30:51,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:30:51,772 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:30:51,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:30:51,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:30:51,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:30:51,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:30:51,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:30:51,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:30:51,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:30:51,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:30:51,775 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:30:51,775 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:30:51,776 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:30:51,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:30:51,776 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:30:51,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:30:51,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:30:51,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:30:51,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:30:51,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:30:51,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:30:51,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:30:51,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:30:51,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:30:51,778 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:30:51,779 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:30:51,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:30:51,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:30:51,780 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e24917ef8695200a643e71e238ee3c2cc9fb2120 [2019-11-26 02:30:52,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:30:52,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:30:52,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:30:52,131 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:30:52,131 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:30:52,132 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-26 02:30:52,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/4fa8ec3c0/975268896f324de59acd833132cff534/FLAGd477707c5 [2019-11-26 02:30:52,656 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:30:52,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-26 02:30:52,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/4fa8ec3c0/975268896f324de59acd833132cff534/FLAGd477707c5 [2019-11-26 02:30:53,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/data/4fa8ec3c0/975268896f324de59acd833132cff534 [2019-11-26 02:30:53,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:30:53,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:30:53,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:53,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:30:53,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:30:53,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d18c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53, skipping insertion in model container [2019-11-26 02:30:53,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:30:53,071 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:30:53,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:53,588 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:30:53,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:30:53,748 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:30:53,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53 WrapperNode [2019-11-26 02:30:53,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:30:53,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:53,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:30:53,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:30:53,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:30:53,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:30:53,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:30:53,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:30:53,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... [2019-11-26 02:30:53,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:30:53,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:30:53,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:30:53,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:30:53,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/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 [2019-11-26 02:30:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-26 02:30:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-26 02:30:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-26 02:30:53,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-26 02:30:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:30:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:30:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:30:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:30:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:30:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:30:53,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:30:53,890 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:30:54,202 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:30:54,202 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:30:54,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:54 BoogieIcfgContainer [2019-11-26 02:30:54,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:30:54,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:30:54,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:30:54,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:30:54,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:30:53" (1/3) ... [2019-11-26 02:30:54,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a75b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:54, skipping insertion in model container [2019-11-26 02:30:54,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:30:53" (2/3) ... [2019-11-26 02:30:54,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a75b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:30:54, skipping insertion in model container [2019-11-26 02:30:54,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:54" (3/3) ... [2019-11-26 02:30:54,216 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2019-11-26 02:30:54,255 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,255 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,255 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,255 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,256 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,256 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,256 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,257 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,257 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,257 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,257 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,258 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,258 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,258 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,258 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,259 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,259 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,259 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,259 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,260 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,260 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,260 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,260 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,261 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,261 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,261 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,261 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,261 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,262 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,262 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,262 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,262 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,263 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,263 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,263 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,263 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,264 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,264 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,264 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,264 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,265 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,265 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,265 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,265 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,266 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,266 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,266 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,266 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,267 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,267 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,267 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,267 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,268 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,268 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,268 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,268 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,269 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,269 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,269 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,269 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,269 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,270 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,270 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,271 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,271 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,271 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,271 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,272 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,272 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,272 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,272 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,273 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,273 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,273 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,273 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,273 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,274 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,274 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,274 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,274 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,275 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,275 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,275 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,276 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:30:54,308 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:30:54,308 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:30:54,315 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:30:54,326 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:30:54,345 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:30:54,345 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:30:54,346 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:30:54,346 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:30:54,347 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:30:54,347 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:30:54,351 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:30:54,352 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:30:54,369 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 94 transitions [2019-11-26 02:30:54,490 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1014 states. [2019-11-26 02:30:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states. [2019-11-26 02:30:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:30:54,503 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:54,504 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] [2019-11-26 02:30:54,504 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:54,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1759604671, now seen corresponding path program 1 times [2019-11-26 02:30:54,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:54,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1265209059] [2019-11-26 02:30:54,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:54,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:30:54,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:54,839 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:54,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:54,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:54,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1265209059] [2019-11-26 02:30:54,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:54,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-26 02:30:54,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561550155] [2019-11-26 02:30:54,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:30:54,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:54,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:30:54,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:30:54,959 INFO L87 Difference]: Start difference. First operand 1014 states. Second operand 7 states. [2019-11-26 02:30:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:55,303 INFO L93 Difference]: Finished difference Result 2731 states and 7871 transitions. [2019-11-26 02:30:55,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:30:55,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-26 02:30:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:55,325 INFO L225 Difference]: With dead ends: 2731 [2019-11-26 02:30:55,325 INFO L226 Difference]: Without dead ends: 586 [2019-11-26 02:30:55,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:30:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2019-11-26 02:30:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 387. [2019-11-26 02:30:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-11-26 02:30:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 949 transitions. [2019-11-26 02:30:55,407 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 949 transitions. Word has length 21 [2019-11-26 02:30:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:55,407 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 949 transitions. [2019-11-26 02:30:55,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:30:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 949 transitions. [2019-11-26 02:30:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:30:55,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:55,410 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] [2019-11-26 02:30:55,621 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:55,621 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:55,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1049840537, now seen corresponding path program 1 times [2019-11-26 02:30:55,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:55,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [843961830] [2019-11-26 02:30:55,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:55,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:30:55,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:55,843 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:55,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:55,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:55,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:55,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [843961830] [2019-11-26 02:30:55,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:55,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:30:55,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903878780] [2019-11-26 02:30:55,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:30:55,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:55,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:30:55,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:30:55,952 INFO L87 Difference]: Start difference. First operand 387 states and 949 transitions. Second operand 9 states. [2019-11-26 02:30:56,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:56,437 INFO L93 Difference]: Finished difference Result 761 states and 1843 transitions. [2019-11-26 02:30:56,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-26 02:30:56,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-26 02:30:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:56,442 INFO L225 Difference]: With dead ends: 761 [2019-11-26 02:30:56,442 INFO L226 Difference]: Without dead ends: 358 [2019-11-26 02:30:56,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:30:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2019-11-26 02:30:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 327. [2019-11-26 02:30:56,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-11-26 02:30:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 786 transitions. [2019-11-26 02:30:56,480 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 786 transitions. Word has length 27 [2019-11-26 02:30:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:56,481 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 786 transitions. [2019-11-26 02:30:56,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:30:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 786 transitions. [2019-11-26 02:30:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:30:56,486 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:56,487 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] [2019-11-26 02:30:56,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:56,691 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash -719025187, now seen corresponding path program 2 times [2019-11-26 02:30:56,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:56,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1570027976] [2019-11-26 02:30:56,693 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:56,839 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-26 02:30:56,839 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:30:56,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:30:56,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:56,903 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:56,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:56,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:57,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1570027976] [2019-11-26 02:30:57,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:30:57,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:30:57,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273877942] [2019-11-26 02:30:57,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:30:57,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:30:57,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:30:57,039 INFO L87 Difference]: Start difference. First operand 327 states and 786 transitions. Second operand 9 states. [2019-11-26 02:30:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:57,438 INFO L93 Difference]: Finished difference Result 677 states and 1633 transitions. [2019-11-26 02:30:57,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:30:57,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-26 02:30:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:57,441 INFO L225 Difference]: With dead ends: 677 [2019-11-26 02:30:57,442 INFO L226 Difference]: Without dead ends: 385 [2019-11-26 02:30:57,442 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:30:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2019-11-26 02:30:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2019-11-26 02:30:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-11-26 02:30:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 902 transitions. [2019-11-26 02:30:57,464 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 902 transitions. Word has length 27 [2019-11-26 02:30:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:57,465 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 902 transitions. [2019-11-26 02:30:57,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:30:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 902 transitions. [2019-11-26 02:30:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:30:57,469 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:57,470 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:30:57,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:57,673 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:30:57,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:30:57,674 INFO L82 PathProgramCache]: Analyzing trace with hash -38586022, now seen corresponding path program 1 times [2019-11-26 02:30:57,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:30:57,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [549385301] [2019-11-26 02:30:57,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:30:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:57,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:30:57,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:57,928 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:57,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:57,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:58,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549385301] [2019-11-26 02:30:58,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779841635] [2019-11-26 02:30:58,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:30:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:30:58,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:30:58,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:30:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:58,233 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:30:58,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:58,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:58,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:30:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:30:58,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:30:58,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 15 [2019-11-26 02:30:58,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018146066] [2019-11-26 02:30:58,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:30:58,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:30:58,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:30:58,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:30:58,249 INFO L87 Difference]: Start difference. First operand 385 states and 902 transitions. Second operand 15 states. [2019-11-26 02:30:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:30:59,800 INFO L93 Difference]: Finished difference Result 1022 states and 2470 transitions. [2019-11-26 02:30:59,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-26 02:30:59,801 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-26 02:30:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:30:59,804 INFO L225 Difference]: With dead ends: 1022 [2019-11-26 02:30:59,805 INFO L226 Difference]: Without dead ends: 481 [2019-11-26 02:30:59,805 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2019-11-26 02:30:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2019-11-26 02:30:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 417. [2019-11-26 02:30:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-11-26 02:30:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 966 transitions. [2019-11-26 02:30:59,817 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 966 transitions. Word has length 39 [2019-11-26 02:30:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:30:59,817 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 966 transitions. [2019-11-26 02:30:59,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:30:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 966 transitions. [2019-11-26 02:30:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:30:59,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:30:59,819 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:00,221 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:00,222 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash 639874330, now seen corresponding path program 2 times [2019-11-26 02:31:00,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:00,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1092853605] [2019-11-26 02:31:00,222 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:00,385 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:31:00,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:00,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:31:00,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:00,485 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:00,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:00,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:00,490 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:00,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1092853605] [2019-11-26 02:31:00,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928126458] [2019-11-26 02:31:00,748 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:00,828 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:31:00,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:00,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:31:00,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:00,855 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:00,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:00,860 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:00,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:31:00,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 15 [2019-11-26 02:31:00,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932059448] [2019-11-26 02:31:00,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:31:00,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:31:00,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:31:00,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:31:00,887 INFO L87 Difference]: Start difference. First operand 417 states and 966 transitions. Second operand 15 states. [2019-11-26 02:31:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:01,964 INFO L93 Difference]: Finished difference Result 1278 states and 2982 transitions. [2019-11-26 02:31:01,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-26 02:31:01,965 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-26 02:31:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:01,970 INFO L225 Difference]: With dead ends: 1278 [2019-11-26 02:31:01,970 INFO L226 Difference]: Without dead ends: 737 [2019-11-26 02:31:01,971 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2019-11-26 02:31:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-11-26 02:31:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 577. [2019-11-26 02:31:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-11-26 02:31:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 1286 transitions. [2019-11-26 02:31:01,989 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 1286 transitions. Word has length 39 [2019-11-26 02:31:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:01,990 INFO L462 AbstractCegarLoop]: Abstraction has 577 states and 1286 transitions. [2019-11-26 02:31:01,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:31:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 1286 transitions. [2019-11-26 02:31:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-26 02:31:01,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:01,992 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:02,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:02,395 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:02,395 INFO L82 PathProgramCache]: Analyzing trace with hash 566971566, now seen corresponding path program 3 times [2019-11-26 02:31:02,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:02,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [722185190] [2019-11-26 02:31:02,396 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:02,635 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:31:02,635 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:02,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:31:02,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:31:02,789 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:02,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:02,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:31:03,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [722185190] [2019-11-26 02:31:03,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483246994] [2019-11-26 02:31:03,457 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:03,531 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:31:03,531 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:03,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:31:03,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:31:03,553 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:03,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:03,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:31:03,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:31:03,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2019-11-26 02:31:03,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207658796] [2019-11-26 02:31:03,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-26 02:31:03,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:31:03,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-26 02:31:03,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2019-11-26 02:31:03,601 INFO L87 Difference]: Start difference. First operand 577 states and 1286 transitions. Second operand 25 states. [2019-11-26 02:31:04,247 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 16 [2019-11-26 02:31:04,814 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 16 [2019-11-26 02:31:06,108 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2019-11-26 02:31:06,399 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 21 [2019-11-26 02:31:06,625 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2019-11-26 02:31:06,851 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 21 [2019-11-26 02:31:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:08,000 INFO L93 Difference]: Finished difference Result 1888 states and 4447 transitions. [2019-11-26 02:31:08,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-26 02:31:08,001 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2019-11-26 02:31:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:08,007 INFO L225 Difference]: With dead ends: 1888 [2019-11-26 02:31:08,007 INFO L226 Difference]: Without dead ends: 925 [2019-11-26 02:31:08,008 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=758, Invalid=2434, Unknown=0, NotChecked=0, Total=3192 [2019-11-26 02:31:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2019-11-26 02:31:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 645. [2019-11-26 02:31:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-26 02:31:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1422 transitions. [2019-11-26 02:31:08,050 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1422 transitions. Word has length 63 [2019-11-26 02:31:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:08,050 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1422 transitions. [2019-11-26 02:31:08,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-26 02:31:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1422 transitions. [2019-11-26 02:31:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-26 02:31:08,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:08,052 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:08,458 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:08,459 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:08,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1387589022, now seen corresponding path program 4 times [2019-11-26 02:31:08,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:08,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1026067845] [2019-11-26 02:31:08,460 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:08,603 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-26 02:31:08,603 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:08,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:31:08,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:31:08,751 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:08,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:08,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:31:09,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1026067845] [2019-11-26 02:31:09,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122177880] [2019-11-26 02:31:09,348 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:09,420 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-26 02:31:09,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:09,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:31:09,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:31:09,438 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:09,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:09,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:31:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:31:09,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:31:09,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2019-11-26 02:31:09,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586233088] [2019-11-26 02:31:09,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-26 02:31:09,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:31:09,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-26 02:31:09,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2019-11-26 02:31:09,463 INFO L87 Difference]: Start difference. First operand 645 states and 1422 transitions. Second operand 25 states. [2019-11-26 02:31:10,036 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2019-11-26 02:31:11,252 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2019-11-26 02:31:11,497 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 21 [2019-11-26 02:31:11,938 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 21 [2019-11-26 02:31:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:13,601 INFO L93 Difference]: Finished difference Result 1956 states and 4583 transitions. [2019-11-26 02:31:13,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-26 02:31:13,602 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2019-11-26 02:31:13,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:13,609 INFO L225 Difference]: With dead ends: 1956 [2019-11-26 02:31:13,609 INFO L226 Difference]: Without dead ends: 993 [2019-11-26 02:31:13,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=730, Invalid=2350, Unknown=0, NotChecked=0, Total=3080 [2019-11-26 02:31:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2019-11-26 02:31:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 897. [2019-11-26 02:31:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-11-26 02:31:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1926 transitions. [2019-11-26 02:31:13,639 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1926 transitions. Word has length 63 [2019-11-26 02:31:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:13,640 INFO L462 AbstractCegarLoop]: Abstraction has 897 states and 1926 transitions. [2019-11-26 02:31:13,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-26 02:31:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1926 transitions. [2019-11-26 02:31:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-26 02:31:13,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:13,644 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:14,048 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:14,048 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:14,049 INFO L82 PathProgramCache]: Analyzing trace with hash 35566890, now seen corresponding path program 5 times [2019-11-26 02:31:14,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:14,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [4966747] [2019-11-26 02:31:14,050 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:14,336 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-26 02:31:14,337 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:14,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-26 02:31:14,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:14,746 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:16,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [4966747] [2019-11-26 02:31:16,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643378020] [2019-11-26 02:31:16,331 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:16,473 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-11-26 02:31:16,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:16,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-26 02:31:16,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:16,510 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 10 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:16,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:31:16,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 24] total 45 [2019-11-26 02:31:16,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364179656] [2019-11-26 02:31:16,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-11-26 02:31:16,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:31:16,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-11-26 02:31:16,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2019-11-26 02:31:16,656 INFO L87 Difference]: Start difference. First operand 897 states and 1926 transitions. Second operand 45 states. [2019-11-26 02:31:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:17,801 INFO L93 Difference]: Finished difference Result 3849 states and 7641 transitions. [2019-11-26 02:31:17,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-26 02:31:17,801 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 103 [2019-11-26 02:31:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:17,805 INFO L225 Difference]: With dead ends: 3849 [2019-11-26 02:31:17,805 INFO L226 Difference]: Without dead ends: 557 [2019-11-26 02:31:17,807 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=560, Invalid=3600, Unknown=0, NotChecked=0, Total=4160 [2019-11-26 02:31:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2019-11-26 02:31:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2019-11-26 02:31:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2019-11-26 02:31:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1172 transitions. [2019-11-26 02:31:17,822 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1172 transitions. Word has length 103 [2019-11-26 02:31:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:17,822 INFO L462 AbstractCegarLoop]: Abstraction has 557 states and 1172 transitions. [2019-11-26 02:31:17,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-11-26 02:31:17,822 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1172 transitions. [2019-11-26 02:31:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-26 02:31:17,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:31:17,824 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:31:18,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:18,230 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:31:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:31:18,230 INFO L82 PathProgramCache]: Analyzing trace with hash 565338346, now seen corresponding path program 6 times [2019-11-26 02:31:18,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:31:18,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [583490244] [2019-11-26 02:31:18,231 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:18,502 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-26 02:31:18,503 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:18,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-26 02:31:18,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:18,828 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:20,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [583490244] [2019-11-26 02:31:20,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818800407] [2019-11-26 02:31:20,379 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:31:20,505 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-26 02:31:20,506 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:31:20,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-26 02:31:20,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:31:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:20,529 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:31:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:31:20,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:31:20,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 23] total 44 [2019-11-26 02:31:20,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673249390] [2019-11-26 02:31:20,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-26 02:31:20,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:31:20,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-26 02:31:20,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1686, Unknown=0, NotChecked=0, Total=1892 [2019-11-26 02:31:20,556 INFO L87 Difference]: Start difference. First operand 557 states and 1172 transitions. Second operand 44 states. [2019-11-26 02:31:21,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:31:21,641 INFO L93 Difference]: Finished difference Result 1765 states and 3207 transitions. [2019-11-26 02:31:21,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-26 02:31:21,642 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 103 [2019-11-26 02:31:21,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:31:21,643 INFO L225 Difference]: With dead ends: 1765 [2019-11-26 02:31:21,643 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:31:21,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=516, Invalid=3516, Unknown=0, NotChecked=0, Total=4032 [2019-11-26 02:31:21,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:31:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:31:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:31:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:31:21,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2019-11-26 02:31:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:31:21,645 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:31:21,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-26 02:31:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:31:21,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:31:22,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:31:22,048 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:31:22,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:31:22 BasicIcfg [2019-11-26 02:31:22,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:31:22,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:31:22,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:31:22,050 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:31:22,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:30:54" (3/4) ... [2019-11-26 02:31:22,052 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:31:22,060 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2019-11-26 02:31:22,060 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2019-11-26 02:31:22,065 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-26 02:31:22,065 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:31:22,066 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:31:22,107 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_46bc40bc-268c-4b6d-b10e-ae9f75d49720/bin/utaipan/witness.graphml [2019-11-26 02:31:22,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:31:22,109 INFO L168 Benchmark]: Toolchain (without parser) took 29104.97 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 369.6 MB). Free memory was 956.4 MB in the beginning and 951.1 MB in the end (delta: 5.3 MB). Peak memory consumption was 375.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:22,109 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:22,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:22,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:22,110 INFO L168 Benchmark]: Boogie Preprocessor took 31.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:22,111 INFO L168 Benchmark]: RCFGBuilder took 376.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:22,111 INFO L168 Benchmark]: TraceAbstraction took 27844.61 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.9 MB). Free memory was 1.1 GB in the beginning and 951.1 MB in the end (delta: 172.7 MB). Peak memory consumption was 364.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:31:22,112 INFO L168 Benchmark]: Witness Printer took 58.29 ms. Allocated memory is still 1.4 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:31:22,114 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 744.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 376.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27844.61 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 191.9 MB). Free memory was 1.1 GB in the beginning and 951.1 MB in the end (delta: 172.7 MB). Peak memory consumption was 364.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.29 ms. Allocated memory is still 1.4 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 102 locations, 1 error locations. Result: SAFE, OverallTime: 27.7s, OverallIterations: 9, TraceHistogramMax: 11, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 993 SDtfs, 6248 SDslu, 14246 SDs, 0 SdLazy, 2735 SolverSat, 573 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1937 GetRequests, 1601 SyntacticMatches, 3 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2137 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1014occurred in iteration=0, 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, 830 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 895 NumberOfCodeBlocks, 895 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 1760 ConstructedInterpolants, 0 QuantifiedInterpolants, 674906 SizeOfPredicates, 182 NumberOfNonLiveVariables, 1390 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 30/3384 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 correct! Received shutdown request...