./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 49b5fd9c76ac6ad95191b3c7b3f7f12fe89c1f9b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:55:31,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:55:31,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:55:31,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:55:31,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:55:31,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:55:31,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:55:31,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:55:31,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:55:31,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:55:31,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:55:31,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:55:31,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:55:31,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:55:31,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:55:31,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:55:31,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:55:31,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:55:31,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:55:31,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:55:31,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:55:31,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:55:31,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:55:31,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:55:31,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:55:31,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:55:31,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:55:31,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:55:31,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:55:31,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:55:31,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:55:31,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:55:31,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:55:31,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:55:31,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:55:31,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:55:31,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:55:31,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:55:31,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:55:31,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:55:31,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:55:31,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:55:31,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:55:31,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:55:31,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:55:31,242 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:55:31,243 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:55:31,243 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:55:31,243 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:55:31,243 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:55:31,244 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:55:31,244 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:55:31,245 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:55:31,245 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:55:31,245 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:55:31,245 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:55:31,246 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:55:31,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:55:31,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:55:31,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:55:31,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:55:31,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:55:31,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:55:31,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:55:31,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:55:31,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:55:31,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:55:31,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:55:31,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:55:31,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:55:31,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:55:31,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:55:31,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:55:31,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:55:31,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:55:31,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:55:31,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:55:31,252 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:55:31,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:55:31,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:55:31,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:55:31,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:55:31,253 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49b5fd9c76ac6ad95191b3c7b3f7f12fe89c1f9b [2020-11-22 12:55:31,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:55:31,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:55:31,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:55:31,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:55:31,573 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:55:31,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe020_pso.opt.i [2020-11-22 12:55:31,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/data/96b646041/053573e9795f4554b6a0993a5253bb75/FLAGcb13cee9a [2020-11-22 12:55:32,224 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:55:32,225 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/sv-benchmarks/c/pthread-wmm/safe020_pso.opt.i [2020-11-22 12:55:32,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/data/96b646041/053573e9795f4554b6a0993a5253bb75/FLAGcb13cee9a [2020-11-22 12:55:32,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/data/96b646041/053573e9795f4554b6a0993a5253bb75 [2020-11-22 12:55:32,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:55:32,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:55:32,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:32,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:55:32,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:55:32,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:32" (1/1) ... [2020-11-22 12:55:32,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b00d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:32, skipping insertion in model container [2020-11-22 12:55:32,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:32" (1/1) ... [2020-11-22 12:55:32,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:55:32,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:55:32,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:32,951 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:55:32,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:33,064 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:55:33,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33 WrapperNode [2020-11-22 12:55:33,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:33,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:33,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:55:33,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:55:33,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:33,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:55:33,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:55:33,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:55:33,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... [2020-11-22 12:55:33,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:55:33,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:55:33,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:55:33,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:55:33,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/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 [2020-11-22 12:55:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:55:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:55:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:55:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:55:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:55:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:55:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:55:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:55:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:55:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:55:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:55:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:55:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:55:33,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:55:33,214 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:55:33,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:55:33,632 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:55:33,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:33 BoogieIcfgContainer [2020-11-22 12:55:33,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:55:33,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:55:33,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:55:33,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:55:33,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:55:32" (1/3) ... [2020-11-22 12:55:33,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3527de4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:33, skipping insertion in model container [2020-11-22 12:55:33,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:33" (2/3) ... [2020-11-22 12:55:33,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3527de4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:33, skipping insertion in model container [2020-11-22 12:55:33,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:33" (3/3) ... [2020-11-22 12:55:33,654 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2020-11-22 12:55:33,664 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:55:33,664 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:55:33,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:55:33,669 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:55:33,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,700 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,700 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,708 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,708 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,713 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,713 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:33,718 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:55:33,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:55:33,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:55:33,745 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:55:33,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:55:33,745 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:55:33,746 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:55:33,746 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:55:33,746 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:55:33,746 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:55:33,757 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:55:33,759 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-22 12:55:33,761 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-22 12:55:33,763 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-22 12:55:33,806 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-22 12:55:33,806 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:55:33,810 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-22 12:55:33,812 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-22 12:55:35,869 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-22 12:55:36,345 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-22 12:55:36,638 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-22 12:55:36,727 INFO L131 LiptonReduction]: Checked pairs total: 3056 [2020-11-22 12:55:36,727 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-22 12:55:36,732 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-11-22 12:55:36,753 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-11-22 12:55:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-11-22 12:55:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:55:36,760 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:36,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:36,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-11-22 12:55:36,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:36,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650149537] [2020-11-22 12:55:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:36,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650149537] [2020-11-22 12:55:36,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:36,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:55:36,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423671607] [2020-11-22 12:55:36,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:36,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:36,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:36,980 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-11-22 12:55:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:37,026 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-11-22 12:55:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:37,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 12:55:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:37,045 INFO L225 Difference]: With dead ends: 220 [2020-11-22 12:55:37,065 INFO L226 Difference]: Without dead ends: 172 [2020-11-22 12:55:37,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-22 12:55:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-11-22 12:55:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-22 12:55:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-11-22 12:55:37,135 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-11-22 12:55:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:37,136 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-11-22 12:55:37,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-11-22 12:55:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:55:37,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:37,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:37,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:55:37,138 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:37,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-11-22 12:55:37,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:37,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045633060] [2020-11-22 12:55:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:37,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045633060] [2020-11-22 12:55:37,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:37,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:55:37,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359836585] [2020-11-22 12:55:37,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:37,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:37,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:37,268 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-11-22 12:55:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:37,291 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-11-22 12:55:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:37,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-22 12:55:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:37,297 INFO L225 Difference]: With dead ends: 163 [2020-11-22 12:55:37,297 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 12:55:37,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 12:55:37,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 12:55:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 12:55:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-11-22 12:55:37,311 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-11-22 12:55:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:37,311 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-11-22 12:55:37,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-11-22 12:55:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:55:37,313 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:37,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:37,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:55:37,313 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-11-22 12:55:37,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:37,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121455950] [2020-11-22 12:55:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:37,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121455950] [2020-11-22 12:55:37,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:37,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:37,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204834853] [2020-11-22 12:55:37,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:55:37,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:37,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:55:37,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:37,369 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-11-22 12:55:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:37,385 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-11-22 12:55:37,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:55:37,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-22 12:55:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:37,388 INFO L225 Difference]: With dead ends: 211 [2020-11-22 12:55:37,388 INFO L226 Difference]: Without dead ends: 175 [2020-11-22 12:55:37,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:55:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-22 12:55:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-11-22 12:55:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-22 12:55:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-11-22 12:55:37,408 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-11-22 12:55:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:37,408 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-11-22 12:55:37,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:55:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-11-22 12:55:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:55:37,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:37,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:37,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:55:37,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:37,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:37,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-11-22 12:55:37,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:37,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60062403] [2020-11-22 12:55:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:37,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60062403] [2020-11-22 12:55:37,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:37,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:37,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953397059] [2020-11-22 12:55:37,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:37,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:37,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:37,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:37,481 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-11-22 12:55:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:37,523 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-11-22 12:55:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:37,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 12:55:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:37,526 INFO L225 Difference]: With dead ends: 196 [2020-11-22 12:55:37,526 INFO L226 Difference]: Without dead ends: 124 [2020-11-22 12:55:37,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:37,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-22 12:55:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-22 12:55:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-22 12:55:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-11-22 12:55:37,534 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-11-22 12:55:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:37,534 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-11-22 12:55:37,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-11-22 12:55:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:55:37,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:37,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:37,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:55:37,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:37,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-11-22 12:55:37,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:37,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109359152] [2020-11-22 12:55:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:37,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109359152] [2020-11-22 12:55:37,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:37,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:37,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328445491] [2020-11-22 12:55:37,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:37,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:37,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:37,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:37,648 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 4 states. [2020-11-22 12:55:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:37,705 INFO L93 Difference]: Finished difference Result 144 states and 309 transitions. [2020-11-22 12:55:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:37,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-22 12:55:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:37,709 INFO L225 Difference]: With dead ends: 144 [2020-11-22 12:55:37,709 INFO L226 Difference]: Without dead ends: 108 [2020-11-22 12:55:37,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-22 12:55:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-22 12:55:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-22 12:55:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 232 transitions. [2020-11-22 12:55:37,714 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 232 transitions. Word has length 11 [2020-11-22 12:55:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:37,714 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 232 transitions. [2020-11-22 12:55:37,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 232 transitions. [2020-11-22 12:55:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:55:37,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:37,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:37,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:55:37,716 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:37,717 INFO L82 PathProgramCache]: Analyzing trace with hash 693308811, now seen corresponding path program 1 times [2020-11-22 12:55:37,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:37,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628768946] [2020-11-22 12:55:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:37,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628768946] [2020-11-22 12:55:37,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:37,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:37,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855241785] [2020-11-22 12:55:37,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:55:37,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:55:37,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:37,800 INFO L87 Difference]: Start difference. First operand 108 states and 232 transitions. Second operand 5 states. [2020-11-22 12:55:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:37,860 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2020-11-22 12:55:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:55:37,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-22 12:55:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:37,862 INFO L225 Difference]: With dead ends: 108 [2020-11-22 12:55:37,862 INFO L226 Difference]: Without dead ends: 84 [2020-11-22 12:55:37,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:55:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-22 12:55:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-22 12:55:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-22 12:55:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-11-22 12:55:37,866 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 12 [2020-11-22 12:55:37,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:37,866 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-11-22 12:55:37,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:55:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-11-22 12:55:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:55:37,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:37,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:37,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:55:37,868 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-11-22 12:55:37,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:37,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051809551] [2020-11-22 12:55:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:38,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051809551] [2020-11-22 12:55:38,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:38,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:38,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618017672] [2020-11-22 12:55:38,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:55:38,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:55:38,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:55:38,027 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 6 states. [2020-11-22 12:55:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:38,114 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-11-22 12:55:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:55:38,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 12:55:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:38,115 INFO L225 Difference]: With dead ends: 80 [2020-11-22 12:55:38,115 INFO L226 Difference]: Without dead ends: 33 [2020-11-22 12:55:38,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:55:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-22 12:55:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-22 12:55:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 12:55:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-22 12:55:38,118 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-11-22 12:55:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:38,131 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-22 12:55:38,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:55:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-22 12:55:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:55:38,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:38,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:38,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 12:55:38,132 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:38,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-11-22 12:55:38,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:38,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644227488] [2020-11-22 12:55:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:38,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644227488] [2020-11-22 12:55:38,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:38,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:38,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338068528] [2020-11-22 12:55:38,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:38,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:38,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:38,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:38,207 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-11-22 12:55:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:38,241 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-22 12:55:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:38,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-22 12:55:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:38,241 INFO L225 Difference]: With dead ends: 32 [2020-11-22 12:55:38,241 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:55:38,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:55:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:55:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:55:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:55:38,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-22 12:55:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:38,243 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:55:38,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:55:38,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:55:38,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:55:38,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:55:38 BasicIcfg [2020-11-22 12:55:38,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:55:38,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:55:38,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:55:38,247 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:55:38,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:33" (3/4) ... [2020-11-22 12:55:38,250 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:55:38,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:55:38,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:55:38,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:55:38,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:55:38,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:55:38,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:38,265 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:38,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_da53338e-9e37-4e4b-af4f-2268ce0f68be/bin/utaipan/witness.graphml [2020-11-22 12:55:38,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:55:38,333 INFO L168 Benchmark]: Toolchain (without parser) took 5820.81 ms. Allocated memory was 123.7 MB in the beginning and 186.6 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 149.7 MB in the end (delta: -56.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:38,335 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 48.9 MB in the beginning and 48.9 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:38,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.94 ms. Allocated memory is still 123.7 MB. Free memory was 93.3 MB in the beginning and 80.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:38,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.18 ms. Allocated memory is still 123.7 MB. Free memory was 79.7 MB in the beginning and 78.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:38,337 INFO L168 Benchmark]: Boogie Preprocessor took 24.68 ms. Allocated memory is still 123.7 MB. Free memory was 78.1 MB in the beginning and 76.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:38,338 INFO L168 Benchmark]: RCFGBuilder took 500.38 ms. Allocated memory is still 123.7 MB. Free memory was 76.6 MB in the beginning and 99.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:38,338 INFO L168 Benchmark]: TraceAbstraction took 4597.93 ms. Allocated memory was 123.7 MB in the beginning and 186.6 MB in the end (delta: 62.9 MB). Free memory was 98.4 MB in the beginning and 152.8 MB in the end (delta: -54.4 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:38,338 INFO L168 Benchmark]: Witness Printer took 85.00 ms. Allocated memory is still 186.6 MB. Free memory was 152.8 MB in the beginning and 149.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:38,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 48.9 MB in the beginning and 48.9 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 548.94 ms. Allocated memory is still 123.7 MB. Free memory was 93.3 MB in the beginning and 80.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.18 ms. Allocated memory is still 123.7 MB. Free memory was 79.7 MB in the beginning and 78.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.68 ms. Allocated memory is still 123.7 MB. Free memory was 78.1 MB in the beginning and 76.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 500.38 ms. Allocated memory is still 123.7 MB. Free memory was 76.6 MB in the beginning and 99.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4597.93 ms. Allocated memory was 123.7 MB in the beginning and 186.6 MB in the end (delta: 62.9 MB). Free memory was 98.4 MB in the beginning and 152.8 MB in the end (delta: -54.4 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Witness Printer took 85.00 ms. Allocated memory is still 186.6 MB. Free memory was 152.8 MB in the beginning and 149.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 MoverChecksTotal - PositiveResult [Line: 17]: 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 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 134 SDtfs, 110 SDslu, 162 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...