./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.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/safe027_pso.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 e252dc11a493b86cf95223e578e74371b6c05709 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:32:39,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:32:39,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:32:39,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:32:39,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:32:39,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:32:39,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:32:39,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:32:39,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:32:39,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:32:39,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:32:39,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:32:39,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:32:39,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:32:39,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:32:39,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:32:39,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:32:39,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:32:39,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:32:39,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:32:39,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:32:39,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:32:39,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:32:39,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:32:39,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:32:39,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:32:39,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:32:39,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:32:39,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:32:39,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:32:39,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:32:39,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:32:39,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:32:39,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:32:39,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:32:39,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:32:39,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:32:39,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:32:39,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:32:39,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:32:39,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:32:39,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:32:39,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:32:39,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:32:39,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:32:39,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:32:39,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:32:39,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:32:39,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:32:39,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:32:39,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:32:39,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:32:39,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:32:39,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:32:39,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:32:39,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:32:39,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:32:39,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:32:39,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:32:39,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:32:39,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:32:39,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:32:39,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:32:39,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:32:39,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:32:39,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:32:39,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:32:39,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:32:39,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:32:39,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:32:39,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:32:39,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e252dc11a493b86cf95223e578e74371b6c05709 [2020-10-26 00:32:40,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:32:40,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:32:40,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:32:40,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:32:40,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:32:40,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2020-10-26 00:32:40,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a85ba09/dbacfedb993d4fe188a15a9a8e44d071/FLAG5853197c1 [2020-10-26 00:32:41,114 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:32:41,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2020-10-26 00:32:41,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a85ba09/dbacfedb993d4fe188a15a9a8e44d071/FLAG5853197c1 [2020-10-26 00:32:41,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a85ba09/dbacfedb993d4fe188a15a9a8e44d071 [2020-10-26 00:32:41,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:32:41,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:32:41,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:32:41,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:32:41,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:32:41,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:41,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e646379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41, skipping insertion in model container [2020-10-26 00:32:41,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:41,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:32:41,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:32:41,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:32:41,814 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:32:41,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:32:41,965 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:32:41,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41 WrapperNode [2020-10-26 00:32:41,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:32:41,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:32:41,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:32:41,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:32:41,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:32:42,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:32:42,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:32:42,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:32:42,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (1/1) ... [2020-10-26 00:32:42,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:32:42,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:32:42,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:32:42,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:32:42,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (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 00:32:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:32:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:32:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:32:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:32:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:32:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:32:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:32:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:32:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:32:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:32:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-26 00:32:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-26 00:32:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:32:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:32:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:32:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:32:42,156 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 00:32:42,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:32:42,696 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:32:42,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:32:42 BoogieIcfgContainer [2020-10-26 00:32:42,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:32:42,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:32:42,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:32:42,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:32:42,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:32:41" (1/3) ... [2020-10-26 00:32:42,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf4242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:32:42, skipping insertion in model container [2020-10-26 00:32:42,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:32:41" (2/3) ... [2020-10-26 00:32:42,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf4242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:32:42, skipping insertion in model container [2020-10-26 00:32:42,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:32:42" (3/3) ... [2020-10-26 00:32:42,709 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-10-26 00:32:42,722 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:32:42,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:32:42,729 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:32:42,730 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:32:42,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,778 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,778 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,778 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,778 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,779 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,780 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,780 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,780 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,780 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,781 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,781 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,784 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,785 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,785 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,792 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,792 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,793 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,793 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,799 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,800 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,804 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,804 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,805 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,805 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:32:42,808 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:32:42,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-26 00:32:42,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:32:42,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:32:42,852 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:32:42,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:32:42,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:32:42,853 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:32:42,853 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:32:42,853 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:32:42,868 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:32:42,871 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 91 transitions, 202 flow [2020-10-26 00:32:42,875 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 91 transitions, 202 flow [2020-10-26 00:32:42,878 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 91 transitions, 202 flow [2020-10-26 00:32:42,939 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2020-10-26 00:32:42,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:32:42,945 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 3/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-10-26 00:32:42,949 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-10-26 00:32:43,980 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-26 00:32:44,790 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-26 00:32:45,345 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-26 00:32:46,016 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-26 00:32:46,144 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 00:32:46,400 INFO L131 LiptonReduction]: Checked pairs total: 3854 [2020-10-26 00:32:46,400 INFO L133 LiptonReduction]: Total number of compositions: 80 [2020-10-26 00:32:46,406 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-10-26 00:32:46,467 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-26 00:32:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-26 00:32:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:32:46,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:46,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:46,482 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash -709438342, now seen corresponding path program 1 times [2020-10-26 00:32:46,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:46,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290323203] [2020-10-26 00:32:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:46,749 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 00:32:46,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290323203] [2020-10-26 00:32:46,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:46,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:32:46,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334074694] [2020-10-26 00:32:46,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:32:46,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:46,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:32:46,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:32:46,776 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-26 00:32:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:46,843 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-10-26 00:32:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:32:46,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 00:32:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:46,869 INFO L225 Difference]: With dead ends: 670 [2020-10-26 00:32:46,870 INFO L226 Difference]: Without dead ends: 526 [2020-10-26 00:32:46,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:32:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-26 00:32:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-10-26 00:32:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-26 00:32:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-10-26 00:32:46,978 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-10-26 00:32:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:46,996 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-10-26 00:32:46,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:32:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-10-26 00:32:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:32:46,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:46,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:47,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:32:47,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:47,001 INFO L82 PathProgramCache]: Analyzing trace with hash -534620391, now seen corresponding path program 1 times [2020-10-26 00:32:47,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:47,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140736391] [2020-10-26 00:32:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:47,112 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 00:32:47,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140736391] [2020-10-26 00:32:47,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:47,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:32:47,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019787000] [2020-10-26 00:32:47,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:47,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:47,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:47,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:47,118 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-10-26 00:32:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:47,192 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-10-26 00:32:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:32:47,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 00:32:47,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:47,204 INFO L225 Difference]: With dead ends: 682 [2020-10-26 00:32:47,205 INFO L226 Difference]: Without dead ends: 394 [2020-10-26 00:32:47,207 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 [2020-10-26 00:32:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-26 00:32:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-26 00:32:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-26 00:32:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-10-26 00:32:47,260 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-10-26 00:32:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:47,261 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-10-26 00:32:47,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-10-26 00:32:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:32:47,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:47,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:47,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:32:47,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1129499006, now seen corresponding path program 1 times [2020-10-26 00:32:47,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:47,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184640106] [2020-10-26 00:32:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:47,402 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 00:32:47,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184640106] [2020-10-26 00:32:47,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:47,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:32:47,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343059508] [2020-10-26 00:32:47,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:32:47,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:47,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:32:47,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:32:47,411 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-10-26 00:32:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:47,433 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2020-10-26 00:32:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:32:47,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-26 00:32:47,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:47,441 INFO L225 Difference]: With dead ends: 376 [2020-10-26 00:32:47,441 INFO L226 Difference]: Without dead ends: 376 [2020-10-26 00:32:47,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:32:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-26 00:32:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-10-26 00:32:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-26 00:32:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-10-26 00:32:47,462 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-10-26 00:32:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:47,462 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-10-26 00:32:47,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:32:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-10-26 00:32:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:32:47,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:47,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:47,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:32:47,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash -951035328, now seen corresponding path program 1 times [2020-10-26 00:32:47,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:47,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375999950] [2020-10-26 00:32:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:47,528 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 00:32:47,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375999950] [2020-10-26 00:32:47,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:47,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:32:47,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065389618] [2020-10-26 00:32:47,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:47,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:47,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:47,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:47,531 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 4 states. [2020-10-26 00:32:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:47,558 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-10-26 00:32:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:32:47,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 00:32:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:47,562 INFO L225 Difference]: With dead ends: 466 [2020-10-26 00:32:47,562 INFO L226 Difference]: Without dead ends: 226 [2020-10-26 00:32:47,563 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 [2020-10-26 00:32:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-26 00:32:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-26 00:32:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-26 00:32:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-10-26 00:32:47,595 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-10-26 00:32:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:47,595 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-10-26 00:32:47,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-10-26 00:32:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:32:47,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:47,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:47,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:32:47,598 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:47,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:47,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1524641156, now seen corresponding path program 1 times [2020-10-26 00:32:47,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:47,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428093471] [2020-10-26 00:32:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:47,761 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 00:32:47,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428093471] [2020-10-26 00:32:47,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:47,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:32:47,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972169021] [2020-10-26 00:32:47,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:47,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:47,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:47,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:47,767 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-10-26 00:32:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:47,829 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-10-26 00:32:47,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:32:47,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-26 00:32:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:47,832 INFO L225 Difference]: With dead ends: 287 [2020-10-26 00:32:47,833 INFO L226 Difference]: Without dead ends: 206 [2020-10-26 00:32:47,833 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 [2020-10-26 00:32:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-26 00:32:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-26 00:32:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-26 00:32:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-10-26 00:32:47,843 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-10-26 00:32:47,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:47,844 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-10-26 00:32:47,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-10-26 00:32:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:32:47,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:47,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:47,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:32:47,846 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:47,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1148644205, now seen corresponding path program 1 times [2020-10-26 00:32:47,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:47,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465623325] [2020-10-26 00:32:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:48,001 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 00:32:48,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465623325] [2020-10-26 00:32:48,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:48,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:32:48,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717575664] [2020-10-26 00:32:48,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:32:48,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:48,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:32:48,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:32:48,007 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-10-26 00:32:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:48,103 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-10-26 00:32:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:32:48,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-26 00:32:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:48,106 INFO L225 Difference]: With dead ends: 227 [2020-10-26 00:32:48,106 INFO L226 Difference]: Without dead ends: 162 [2020-10-26 00:32:48,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:32:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-26 00:32:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-26 00:32:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-26 00:32:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-10-26 00:32:48,113 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-10-26 00:32:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:48,113 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-10-26 00:32:48,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:32:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-10-26 00:32:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:32:48,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:48,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:48,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:32:48,115 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:48,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1193386920, now seen corresponding path program 1 times [2020-10-26 00:32:48,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:48,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601165836] [2020-10-26 00:32:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:48,184 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 00:32:48,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601165836] [2020-10-26 00:32:48,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:48,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:32:48,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444327393] [2020-10-26 00:32:48,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:32:48,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:48,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:32:48,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:32:48,187 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-10-26 00:32:48,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:48,255 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-10-26 00:32:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:32:48,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-26 00:32:48,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:48,257 INFO L225 Difference]: With dead ends: 158 [2020-10-26 00:32:48,257 INFO L226 Difference]: Without dead ends: 125 [2020-10-26 00:32:48,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:32:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-26 00:32:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-26 00:32:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-26 00:32:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-10-26 00:32:48,263 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-10-26 00:32:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:48,263 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-10-26 00:32:48,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:32:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-10-26 00:32:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:32:48,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:48,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:48,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:32:48,265 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:48,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1709090152, now seen corresponding path program 1 times [2020-10-26 00:32:48,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:48,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851102255] [2020-10-26 00:32:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:48,342 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 00:32:48,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851102255] [2020-10-26 00:32:48,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:48,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:32:48,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859096268] [2020-10-26 00:32:48,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 00:32:48,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:48,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 00:32:48,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:32:48,345 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 7 states. [2020-10-26 00:32:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:48,420 INFO L93 Difference]: Finished difference Result 120 states and 270 transitions. [2020-10-26 00:32:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:32:48,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-26 00:32:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:48,422 INFO L225 Difference]: With dead ends: 120 [2020-10-26 00:32:48,422 INFO L226 Difference]: Without dead ends: 111 [2020-10-26 00:32:48,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:32:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-26 00:32:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-26 00:32:48,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-26 00:32:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 254 transitions. [2020-10-26 00:32:48,428 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 254 transitions. Word has length 18 [2020-10-26 00:32:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:48,429 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 254 transitions. [2020-10-26 00:32:48,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 00:32:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 254 transitions. [2020-10-26 00:32:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 00:32:48,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:48,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:48,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:32:48,431 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:48,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559887, now seen corresponding path program 1 times [2020-10-26 00:32:48,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:48,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556585413] [2020-10-26 00:32:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:48,472 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 00:32:48,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556585413] [2020-10-26 00:32:48,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:48,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:32:48,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763758282] [2020-10-26 00:32:48,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:48,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:48,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:48,475 INFO L87 Difference]: Start difference. First operand 111 states and 254 transitions. Second operand 4 states. [2020-10-26 00:32:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:48,497 INFO L93 Difference]: Finished difference Result 144 states and 327 transitions. [2020-10-26 00:32:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:32:48,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-26 00:32:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:48,498 INFO L225 Difference]: With dead ends: 144 [2020-10-26 00:32:48,498 INFO L226 Difference]: Without dead ends: 71 [2020-10-26 00:32:48,499 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 00:32:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-26 00:32:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-26 00:32:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-26 00:32:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-10-26 00:32:48,503 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 20 [2020-10-26 00:32:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:48,505 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-10-26 00:32:48,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-10-26 00:32:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 00:32:48,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:32:48,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:32:48,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:32:48,506 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:32:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:32:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1416850207, now seen corresponding path program 2 times [2020-10-26 00:32:48,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:32:48,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326068799] [2020-10-26 00:32:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:32:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:32:48,549 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 00:32:48,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326068799] [2020-10-26 00:32:48,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:32:48,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:32:48,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648546428] [2020-10-26 00:32:48,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:32:48,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:32:48,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:32:48,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:32:48,552 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-10-26 00:32:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:32:48,567 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-10-26 00:32:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:32:48,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-26 00:32:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:32:48,567 INFO L225 Difference]: With dead ends: 70 [2020-10-26 00:32:48,567 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:32:48,568 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 00:32:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:32:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:32:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:32:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:32:48,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-26 00:32:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:32:48,569 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:32:48,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:32:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:32:48,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:32:48,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 00:32:48,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:32:48 BasicIcfg [2020-10-26 00:32:48,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:32:48,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:32:48,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:32:48,576 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:32:48,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:32:42" (3/4) ... [2020-10-26 00:32:48,580 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:32:48,588 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:32:48,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:32:48,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:32:48,589 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-10-26 00:32:48,598 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-10-26 00:32:48,598 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:32:48,599 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:32:48,599 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:32:48,680 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:32:48,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:32:48,685 INFO L168 Benchmark]: Toolchain (without parser) took 7364.27 ms. Allocated memory was 44.0 MB in the beginning and 119.5 MB in the end (delta: 75.5 MB). Free memory was 27.9 MB in the beginning and 38.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:48,686 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 35.7 MB. Free memory is still 20.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:32:48,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.67 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 23.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:48,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.86 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 35.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:48,692 INFO L168 Benchmark]: Boogie Preprocessor took 39.35 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 34.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:48,694 INFO L168 Benchmark]: RCFGBuilder took 629.75 ms. Allocated memory is still 54.5 MB. Free memory was 33.7 MB in the beginning and 23.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:48,695 INFO L168 Benchmark]: TraceAbstraction took 5873.68 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 23.4 MB in the beginning and 41.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:48,697 INFO L168 Benchmark]: Witness Printer took 108.06 ms. Allocated memory is still 119.5 MB. Free memory was 41.7 MB in the beginning and 38.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:32:48,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 35.7 MB. Free memory is still 20.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 632.67 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 23.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.86 ms. Allocated memory is still 54.5 MB. Free memory was 23.1 MB in the beginning and 35.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.35 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 34.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 629.75 ms. Allocated memory is still 54.5 MB. Free memory was 33.7 MB in the beginning and 23.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5873.68 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 23.4 MB in the beginning and 41.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * Witness Printer took 108.06 ms. Allocated memory is still 119.5 MB. Free memory was 41.7 MB in the beginning and 38.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1383 VarBasedMoverChecksPositive, 68 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 51 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 101 PlacesBefore, 38 PlacesAfterwards, 91 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 3854 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 5 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 209 SDtfs, 230 SDslu, 310 SDs, 0 SdLazy, 184 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 5985 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...