./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b9ee3f88e8f44d2d06ff193dda062789325bd80 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:02:30,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:02:30,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:02:30,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:02:30,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:02:30,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:02:30,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:02:30,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:02:30,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:02:30,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:02:30,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:02:30,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:02:30,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:02:30,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:02:30,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:02:30,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:02:30,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:02:30,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:02:30,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:02:30,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:02:30,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:02:30,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:02:30,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:02:30,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:02:30,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:02:30,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:02:30,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:02:30,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:02:30,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:02:30,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:02:30,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:02:30,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:02:30,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:02:30,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:02:30,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:02:30,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:02:30,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:02:30,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:02:30,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:02:30,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:02:30,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:02:30,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:02:30,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:02:30,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:02:30,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:02:30,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:02:30,270 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:02:30,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:02:30,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:02:30,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:02:30,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:02:30,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:02:30,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:02:30,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:02:30,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:02:30,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:02:30,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:02:30,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:02:30,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:02:30,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:02:30,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:02:30,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:02:30,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:02:30,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:02:30,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:02:30,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:02:30,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:02:30,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:02:30,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:02:30,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:02:30,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:02:30,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b9ee3f88e8f44d2d06ff193dda062789325bd80 [2020-10-20 03:02:30,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:02:30,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:02:30,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:02:30,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:02:30,504 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:02:30,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-10-20 03:02:30,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed123bd05/3b930159b44642968a0dbf324cbfe6a8/FLAG9f12eaae4 [2020-10-20 03:02:31,149 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:02:31,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-10-20 03:02:31,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed123bd05/3b930159b44642968a0dbf324cbfe6a8/FLAG9f12eaae4 [2020-10-20 03:02:31,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed123bd05/3b930159b44642968a0dbf324cbfe6a8 [2020-10-20 03:02:31,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:02:31,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:02:31,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:02:31,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:02:31,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:02:31,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:02:31" (1/1) ... [2020-10-20 03:02:31,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cec1183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:31, skipping insertion in model container [2020-10-20 03:02:31,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:02:31" (1/1) ... [2020-10-20 03:02:31,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:02:31,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:02:32,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:02:32,032 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:02:32,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:02:32,170 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:02:32,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32 WrapperNode [2020-10-20 03:02:32,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:02:32,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:02:32,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:02:32,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:02:32,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:02:32,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:02:32,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:02:32,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:02:32,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... [2020-10-20 03:02:32,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:02:32,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:02:32,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:02:32,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:02:32,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 03:02:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:02:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:02:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:02:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:02:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:02:32,350 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:02:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:02:32,350 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:02:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:02:32,351 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:02:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:02:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:02:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:02:32,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:02:32,354 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:02:32,721 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:02:32,722 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:02:32,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:32 BoogieIcfgContainer [2020-10-20 03:02:32,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:02:32,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:02:32,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:02:32,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:02:32,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:02:31" (1/3) ... [2020-10-20 03:02:32,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd632ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:02:32, skipping insertion in model container [2020-10-20 03:02:32,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:32" (2/3) ... [2020-10-20 03:02:32,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd632ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:02:32, skipping insertion in model container [2020-10-20 03:02:32,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:32" (3/3) ... [2020-10-20 03:02:32,741 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2020-10-20 03:02:32,771 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:02:32,777 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:02:32,788 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:02:32,790 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:02:32,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:32,869 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:02:32,884 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:02:32,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:02:32,902 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:02:32,902 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:02:32,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:02:32,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:02:32,903 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:02:32,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:02:32,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:02:32,917 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:02:32,919 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:02:32,922 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:02:32,924 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:02:32,975 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:02:32,976 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:02:32,986 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 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. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:02:32,990 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:02:34,801 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-20 03:02:34,910 INFO L132 LiptonReduction]: Checked pairs total: 2779 [2020-10-20 03:02:34,911 INFO L134 LiptonReduction]: Total number of compositions: 70 [2020-10-20 03:02:34,918 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:02:34,970 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:02:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:02:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:02:34,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:34,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:34,988 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-20 03:02:35,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:35,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327022836] [2020-10-20 03:02:35,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:35,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327022836] [2020-10-20 03:02:35,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:35,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:35,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450642741] [2020-10-20 03:02:35,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:02:35,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:35,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:02:35,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:02:35,197 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:02:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:35,229 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:02:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:02:35,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:02:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:35,249 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:02:35,249 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:02:35,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:02:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:02:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:02:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:02:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:02:35,340 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:02:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:35,343 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:02:35,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:02:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:02:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:02:35,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:35,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:35,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:02:35,350 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:35,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-20 03:02:35,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:35,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662576660] [2020-10-20 03:02:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:35,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662576660] [2020-10-20 03:02:35,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:35,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:35,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56154785] [2020-10-20 03:02:35,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:35,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:35,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:35,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:35,584 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-10-20 03:02:35,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:35,648 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-20 03:02:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:02:35,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 03:02:35,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:35,652 INFO L225 Difference]: With dead ends: 330 [2020-10-20 03:02:35,652 INFO L226 Difference]: Without dead ends: 266 [2020-10-20 03:02:35,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:02:35,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-20 03:02:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-20 03:02:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-20 03:02:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-20 03:02:35,695 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-20 03:02:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:35,695 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-20 03:02:35,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-20 03:02:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:02:35,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:35,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:35,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:02:35,697 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-10-20 03:02:35,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:35,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137684806] [2020-10-20 03:02:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:35,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137684806] [2020-10-20 03:02:35,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:35,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:35,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571517063] [2020-10-20 03:02:35,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:35,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:35,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:35,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:35,826 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-10-20 03:02:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:35,880 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-20 03:02:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:02:35,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 03:02:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:35,883 INFO L225 Difference]: With dead ends: 290 [2020-10-20 03:02:35,884 INFO L226 Difference]: Without dead ends: 242 [2020-10-20 03:02:35,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:02:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-20 03:02:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-20 03:02:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-20 03:02:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-20 03:02:35,897 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-20 03:02:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:35,897 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-20 03:02:35,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-20 03:02:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:02:35,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:35,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:35,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:02:35,900 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:35,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:35,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-10-20 03:02:35,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:35,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562865853] [2020-10-20 03:02:35,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:35,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562865853] [2020-10-20 03:02:35,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:35,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:35,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125156024] [2020-10-20 03:02:35,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:02:35,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:35,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:02:35,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:02:35,956 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-10-20 03:02:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:35,979 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-10-20 03:02:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:35,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:02:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:35,982 INFO L225 Difference]: With dead ends: 260 [2020-10-20 03:02:35,982 INFO L226 Difference]: Without dead ends: 224 [2020-10-20 03:02:35,982 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 [2020-10-20 03:02:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-20 03:02:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-10-20 03:02:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-20 03:02:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-10-20 03:02:35,999 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-10-20 03:02:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:35,999 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-10-20 03:02:36,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:02:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-10-20 03:02:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:02:36,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:36,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:36,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:02:36,010 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-10-20 03:02:36,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:36,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317174234] [2020-10-20 03:02:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:36,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317174234] [2020-10-20 03:02:36,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:36,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:36,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926293984] [2020-10-20 03:02:36,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:36,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:36,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:36,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:36,060 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-10-20 03:02:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:36,179 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-10-20 03:02:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:02:36,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:02:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:36,181 INFO L225 Difference]: With dead ends: 293 [2020-10-20 03:02:36,181 INFO L226 Difference]: Without dead ends: 146 [2020-10-20 03:02:36,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:02:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-20 03:02:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-20 03:02:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-20 03:02:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-10-20 03:02:36,187 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-10-20 03:02:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:36,187 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-10-20 03:02:36,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-10-20 03:02:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:02:36,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:36,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:36,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:02:36,189 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:36,189 INFO L82 PathProgramCache]: Analyzing trace with hash -365258832, now seen corresponding path program 1 times [2020-10-20 03:02:36,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:36,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99917602] [2020-10-20 03:02:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:36,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99917602] [2020-10-20 03:02:36,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:36,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:36,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944641180] [2020-10-20 03:02:36,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:02:36,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:36,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:02:36,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:02:36,231 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 4 states. [2020-10-20 03:02:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:36,255 INFO L93 Difference]: Finished difference Result 160 states and 379 transitions. [2020-10-20 03:02:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:36,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:02:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:36,257 INFO L225 Difference]: With dead ends: 160 [2020-10-20 03:02:36,257 INFO L226 Difference]: Without dead ends: 142 [2020-10-20 03:02:36,257 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 [2020-10-20 03:02:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-20 03:02:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-20 03:02:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-20 03:02:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2020-10-20 03:02:36,262 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2020-10-20 03:02:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:36,262 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2020-10-20 03:02:36,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:02:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2020-10-20 03:02:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:02:36,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:36,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:36,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:02:36,264 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-10-20 03:02:36,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:36,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764438893] [2020-10-20 03:02:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:36,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764438893] [2020-10-20 03:02:36,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:36,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:36,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039458315] [2020-10-20 03:02:36,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:36,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:36,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:36,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:36,313 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand 5 states. [2020-10-20 03:02:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:36,352 INFO L93 Difference]: Finished difference Result 186 states and 444 transitions. [2020-10-20 03:02:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:36,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:02:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:36,354 INFO L225 Difference]: With dead ends: 186 [2020-10-20 03:02:36,354 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 03:02:36,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:02:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 03:02:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-20 03:02:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 03:02:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-10-20 03:02:36,358 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 14 [2020-10-20 03:02:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:36,359 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-10-20 03:02:36,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-10-20 03:02:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:02:36,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:36,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:36,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:02:36,361 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1047574954, now seen corresponding path program 1 times [2020-10-20 03:02:36,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:36,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126232201] [2020-10-20 03:02:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:02:36,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126232201] [2020-10-20 03:02:36,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:36,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:02:36,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585816393] [2020-10-20 03:02:36,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:02:36,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:36,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:02:36,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:02:36,430 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 6 states. [2020-10-20 03:02:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:36,496 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-10-20 03:02:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:02:36,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 03:02:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:36,497 INFO L225 Difference]: With dead ends: 62 [2020-10-20 03:02:36,497 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:02:36,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-20 03:02:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:02:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:02:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:02:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:02:36,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-20 03:02:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:36,499 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:02:36,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:02:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:02:36,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:02:36,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:02:36,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:02:36 BasicIcfg [2020-10-20 03:02:36,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:02:36,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:02:36,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:02:36,505 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:02:36,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:32" (3/4) ... [2020-10-20 03:02:36,510 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:02:36,518 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:02:36,518 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:02:36,518 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:02:36,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:02:36,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:02:36,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:02:36,525 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:02:36,576 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:02:36,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:02:36,581 INFO L168 Benchmark]: Toolchain (without parser) took 5142.50 ms. Allocated memory was 36.7 MB in the beginning and 86.5 MB in the end (delta: 49.8 MB). Free memory was 10.7 MB in the beginning and 48.9 MB in the end (delta: -38.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:36,582 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 36.2 MB. Free memory is still 15.7 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 03:02:36,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.23 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 9.8 MB in the beginning and 20.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:36,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.88 ms. Allocated memory is still 46.1 MB. Free memory was 19.8 MB in the beginning and 17.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:36,586 INFO L168 Benchmark]: Boogie Preprocessor took 46.91 ms. Allocated memory is still 46.1 MB. Free memory was 17.7 MB in the beginning and 16.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:36,587 INFO L168 Benchmark]: RCFGBuilder took 447.18 ms. Allocated memory was 46.1 MB in the beginning and 46.7 MB in the end (delta: 524.3 kB). Free memory was 16.0 MB in the beginning and 11.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:36,589 INFO L168 Benchmark]: TraceAbstraction took 3777.57 ms. Allocated memory was 46.7 MB in the beginning and 86.5 MB in the end (delta: 39.8 MB). Free memory was 10.4 MB in the beginning and 52.8 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 03:02:36,594 INFO L168 Benchmark]: Witness Printer took 75.18 ms. Allocated memory is still 86.5 MB. Free memory was 52.8 MB in the beginning and 48.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:36,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 36.2 MB. Free memory is still 15.7 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 721.23 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 9.8 MB in the beginning and 20.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.88 ms. Allocated memory is still 46.1 MB. Free memory was 19.8 MB in the beginning and 17.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 46.91 ms. Allocated memory is still 46.1 MB. Free memory was 17.7 MB in the beginning and 16.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 447.18 ms. Allocated memory was 46.1 MB in the beginning and 46.7 MB in the end (delta: 524.3 kB). Free memory was 16.0 MB in the beginning and 11.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3777.57 ms. Allocated memory was 46.7 MB in the beginning and 86.5 MB in the end (delta: 39.8 MB). Free memory was 10.4 MB in the beginning and 52.8 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 75.18 ms. Allocated memory is still 86.5 MB. Free memory was 52.8 MB in the beginning and 48.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 963 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 158 SDtfs, 188 SDslu, 257 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 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...