./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/safe036_power.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 b7679b93c90de704915c51ce912c58e2ab0edd1e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:34:24,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:34:24,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:34:24,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:34:24,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:34:24,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:34:24,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:34:24,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:34:24,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:34:24,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:34:24,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:34:24,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:34:24,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:34:24,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:34:24,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:34:24,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:34:24,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:34:24,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:34:24,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:34:24,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:34:24,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:34:24,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:34:24,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:34:24,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:34:24,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:34:24,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:34:24,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:34:24,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:34:24,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:34:24,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:34:24,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:34:24,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:34:24,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:34:24,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:34:24,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:34:24,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:34:24,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:34:24,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:34:24,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:34:24,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:34:24,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:34:24,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:34:24,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:34:24,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:34:24,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:34:24,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:34:24,224 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:34:24,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:34:24,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:34:24,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:34:24,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:34:24,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:34:24,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:34:24,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:34:24,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:34:24,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:34:24,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:34:24,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:34:24,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:34:24,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:34:24,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:34:24,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:34:24,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:34:24,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:34:24,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:34:24,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:34:24,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:34:24,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:34:24,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:34:24,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:34:24,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:34:24,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7679b93c90de704915c51ce912c58e2ab0edd1e [2020-10-26 00:34:24,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:34:24,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:34:24,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:34:24,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:34:24,747 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:34:24,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i [2020-10-26 00:34:24,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd37e057f/889faacff54e4f279ad3efbe198dbd83/FLAGc47beb9b9 [2020-10-26 00:34:25,606 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:34:25,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_power.oepc.i [2020-10-26 00:34:25,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd37e057f/889faacff54e4f279ad3efbe198dbd83/FLAGc47beb9b9 [2020-10-26 00:34:25,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd37e057f/889faacff54e4f279ad3efbe198dbd83 [2020-10-26 00:34:25,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:34:25,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:34:25,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:34:25,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:34:25,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:34:25,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:34:25" (1/1) ... [2020-10-26 00:34:25,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556151d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:25, skipping insertion in model container [2020-10-26 00:34:25,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:34:25" (1/1) ... [2020-10-26 00:34:25,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:34:25,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:34:26,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:34:26,480 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:34:26,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:34:26,652 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:34:26,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26 WrapperNode [2020-10-26 00:34:26,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:34:26,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:34:26,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:34:26,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:34:26,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:34:26,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:34:26,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:34:26,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:34:26,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (1/1) ... [2020-10-26 00:34:26,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:34:26,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:34:26,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:34:26,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:34:26,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (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 [2020-10-26 00:34:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:34:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:34:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:34:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:34:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:34:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:34:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:34:26,827 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:34:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:34:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:34:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:34:26,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:34:26,831 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:34:27,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:34:27,270 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:34:27,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:27 BoogieIcfgContainer [2020-10-26 00:34:27,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:34:27,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:34:27,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:34:27,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:34:27,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:34:25" (1/3) ... [2020-10-26 00:34:27,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7000e370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:34:27, skipping insertion in model container [2020-10-26 00:34:27,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:34:26" (2/3) ... [2020-10-26 00:34:27,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7000e370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:34:27, skipping insertion in model container [2020-10-26 00:34:27,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:27" (3/3) ... [2020-10-26 00:34:27,282 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.oepc.i [2020-10-26 00:34:27,296 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:34:27,296 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:34:27,304 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:34:27,305 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:34:27,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,331 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,332 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,332 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,333 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,333 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,336 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,344 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,345 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:34:27,347 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:34:27,361 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-26 00:34:27,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:34:27,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:34:27,390 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:34:27,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:34:27,391 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:34:27,391 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:34:27,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:34:27,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:34:27,404 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:34:27,406 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-26 00:34:27,409 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-26 00:34:27,412 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-26 00:34:27,455 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-26 00:34:27,455 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:34:27,459 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-26 00:34:27,462 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-26 00:34:29,072 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-26 00:34:29,181 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 00:34:29,222 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-10-26 00:34:29,222 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-26 00:34:29,230 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-26 00:34:29,248 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-26 00:34:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-26 00:34:29,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 00:34:29,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:29,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 00:34:29,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:29,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-10-26 00:34:29,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:29,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490710106] [2020-10-26 00:34:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:29,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490710106] [2020-10-26 00:34:29,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:29,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:34:29,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406972707] [2020-10-26 00:34:29,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:34:29,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:29,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:34:29,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:34:29,496 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-26 00:34:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:29,515 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-26 00:34:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:34:29,517 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-26 00:34:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:29,527 INFO L225 Difference]: With dead ends: 90 [2020-10-26 00:34:29,528 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 00:34:29,529 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 [2020-10-26 00:34:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 00:34:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-26 00:34:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-26 00:34:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-26 00:34:29,596 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-26 00:34:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:29,598 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-26 00:34:29,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:34:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-26 00:34:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-26 00:34:29,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:29,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:29,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:34:29,601 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:29,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-10-26 00:34:29,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:29,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075044343] [2020-10-26 00:34:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:29,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075044343] [2020-10-26 00:34:29,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:29,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:34:29,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494269432] [2020-10-26 00:34:29,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:34:29,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:29,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:34:29,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:34:29,730 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-26 00:34:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:29,774 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-26 00:34:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:29,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-26 00:34:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:29,776 INFO L225 Difference]: With dead ends: 63 [2020-10-26 00:34:29,776 INFO L226 Difference]: Without dead ends: 47 [2020-10-26 00:34:29,777 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 [2020-10-26 00:34:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-26 00:34:29,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-26 00:34:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 00:34:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-10-26 00:34:29,784 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-10-26 00:34:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:29,784 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-10-26 00:34:29,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:34:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-10-26 00:34:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:34:29,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:29,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:29,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:34:29,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:29,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:29,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-10-26 00:34:29,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:29,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638417192] [2020-10-26 00:34:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:29,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638417192] [2020-10-26 00:34:29,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:29,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:34:29,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186725886] [2020-10-26 00:34:29,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:29,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:29,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:29,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:29,922 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-10-26 00:34:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:29,976 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-10-26 00:34:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:34:29,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-26 00:34:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:29,978 INFO L225 Difference]: With dead ends: 36 [2020-10-26 00:34:29,978 INFO L226 Difference]: Without dead ends: 29 [2020-10-26 00:34:29,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:34:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-26 00:34:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-26 00:34:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-26 00:34:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-26 00:34:29,986 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-10-26 00:34:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:29,986 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-26 00:34:29,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-26 00:34:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:34:29,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:29,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:29,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:34:29,988 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:29,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-10-26 00:34:29,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:29,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098307204] [2020-10-26 00:34:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:30,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098307204] [2020-10-26 00:34:30,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:30,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:34:30,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559677634] [2020-10-26 00:34:30,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:30,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:30,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:30,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:30,130 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-10-26 00:34:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:30,172 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-10-26 00:34:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:30,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:34:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:30,174 INFO L225 Difference]: With dead ends: 37 [2020-10-26 00:34:30,174 INFO L226 Difference]: Without dead ends: 17 [2020-10-26 00:34:30,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:34:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-26 00:34:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-26 00:34:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-26 00:34:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-26 00:34:30,178 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-26 00:34:30,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:30,178 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-26 00:34:30,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:30,178 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-26 00:34:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:34:30,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:34:30,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:34:30,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:34:30,179 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:34:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:34:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-10-26 00:34:30,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:34:30,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212160418] [2020-10-26 00:34:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:34:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:34:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:34:30,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212160418] [2020-10-26 00:34:30,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:34:30,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:34:30,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809847063] [2020-10-26 00:34:30,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:34:30,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:34:30,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:34:30,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:34:30,235 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-10-26 00:34:30,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:34:30,262 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-26 00:34:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:34:30,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:34:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:34:30,263 INFO L225 Difference]: With dead ends: 16 [2020-10-26 00:34:30,263 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:34:30,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:34:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:34:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:34:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:34:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:34:30,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-26 00:34:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:34:30,265 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:34:30,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:34:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:34:30,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:34:30,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:34:30,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:34:30 BasicIcfg [2020-10-26 00:34:30,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:34:30,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:34:30,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:34:30,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:34:30,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:34:27" (3/4) ... [2020-10-26 00:34:30,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:34:30,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:34:30,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:34:30,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-26 00:34:30,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:34:30,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:30,287 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:34:30,330 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:34:30,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:34:30,333 INFO L168 Benchmark]: Toolchain (without parser) took 4509.29 ms. Allocated memory was 46.1 MB in the beginning and 83.9 MB in the end (delta: 37.7 MB). Free memory was 30.4 MB in the beginning and 43.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:30,333 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 46.1 MB. Free memory is still 28.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:30,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.39 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.8 MB in the beginning and 34.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:30,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.83 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 32.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:30,335 INFO L168 Benchmark]: Boogie Preprocessor took 28.91 ms. Allocated memory is still 56.6 MB. Free memory was 32.9 MB in the beginning and 31.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:34:30,336 INFO L168 Benchmark]: RCFGBuilder took 538.78 ms. Allocated memory is still 56.6 MB. Free memory was 31.7 MB in the beginning and 27.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:30,337 INFO L168 Benchmark]: TraceAbstraction took 2994.27 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 26.5 MB in the beginning and 46.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:30,337 INFO L168 Benchmark]: Witness Printer took 61.65 ms. Allocated memory is still 83.9 MB. Free memory was 46.9 MB in the beginning and 43.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:34:30,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 46.1 MB. Free memory is still 28.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 821.39 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.8 MB in the beginning and 34.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.83 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 32.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.91 ms. Allocated memory is still 56.6 MB. Free memory was 32.9 MB in the beginning and 31.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 538.78 ms. Allocated memory is still 56.6 MB. Free memory was 31.7 MB in the beginning and 27.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2994.27 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 26.5 MB in the beginning and 46.9 MB in the end (delta: -20.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Witness Printer took 61.65 ms. Allocated memory is still 83.9 MB. Free memory was 46.9 MB in the beginning and 43.9 MB in the end (delta: 3.0 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 525 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 99 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...