./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer --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 8b5bddfef3ba7869d349ebe06c117f44aa1f95a0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:02:35,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:35,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:35,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:35,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:35,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:35,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:35,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:35,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:35,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:35,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:35,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:35,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:35,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:35,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:35,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:35,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:35,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:35,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:35,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:35,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:35,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:35,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:35,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:35,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:35,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:35,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:35,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:35,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:35,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:35,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:35,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:35,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:35,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:35,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:35,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:35,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:35,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:35,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:35,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:35,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:35,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:02:35,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:35,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:35,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:35,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:35,613 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:35,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:35,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:02:35,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:02:35,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:02:35,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:35,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:02:35,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:02:35,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:02:35,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:02:35,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:02:35,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:35,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:02:35,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:35,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:35,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:02:35,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:02:35,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:35,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:35,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:02:35,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:02:35,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:02:35,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:02:35,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:02:35,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:35,624 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:/tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b5bddfef3ba7869d349ebe06c117f44aa1f95a0 [2020-11-28 03:02:36,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:36,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:36,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:36,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:36,105 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:36,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2020-11-28 03:02:36,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/data/c0e88b46d/17ebde5889d540079f8c6fe5dfec12f2/FLAG50e7bc2b9 [2020-11-28 03:02:36,997 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:37,002 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2020-11-28 03:02:37,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/data/c0e88b46d/17ebde5889d540079f8c6fe5dfec12f2/FLAG50e7bc2b9 [2020-11-28 03:02:37,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/data/c0e88b46d/17ebde5889d540079f8c6fe5dfec12f2 [2020-11-28 03:02:37,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:37,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:02:37,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:37,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:37,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:37,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:37" (1/1) ... [2020-11-28 03:02:37,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a611511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:37, skipping insertion in model container [2020-11-28 03:02:37,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:37" (1/1) ... [2020-11-28 03:02:37,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:37,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:37,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:37,848 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:37,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:38,029 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:38,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38 WrapperNode [2020-11-28 03:02:38,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:38,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:38,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:02:38,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:02:38,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:38,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:38,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:38,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:38,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... [2020-11-28 03:02:38,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:38,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:38,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:38,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:38,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:02:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:02:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:02:38,300 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:02:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:02:38,300 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:02:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:02:38,301 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:02:38,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:02:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:02:38,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:38,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:38,304 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:02:38,934 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:38,935 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:02:38,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:38 BoogieIcfgContainer [2020-11-28 03:02:38,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:38,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:38,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:38,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:38,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:37" (1/3) ... [2020-11-28 03:02:38,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4957301c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:38, skipping insertion in model container [2020-11-28 03:02:38,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:38" (2/3) ... [2020-11-28 03:02:38,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4957301c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:38, skipping insertion in model container [2020-11-28 03:02:38,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:38" (3/3) ... [2020-11-28 03:02:38,950 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-11-28 03:02:38,964 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:02:38,964 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:38,970 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:02:38,971 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:02:39,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,026 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,026 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,026 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,028 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,029 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,029 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,030 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,037 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,037 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,047 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,047 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,048 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,052 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,052 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:02:39,058 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:02:39,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:02:39,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:39,119 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:02:39,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:39,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:39,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:39,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:39,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:39,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:39,139 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:02:39,141 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 03:02:39,145 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-28 03:02:39,148 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-28 03:02:39,231 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-28 03:02:39,231 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:02:39,236 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 03:02:39,241 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:02:39,736 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-28 03:02:41,163 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-28 03:02:41,796 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-28 03:02:42,525 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 03:02:42,649 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 03:02:42,666 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-28 03:02:42,666 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-28 03:02:42,674 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:02:42,722 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:02:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:02:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:02:42,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:42,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:42,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:42,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:42,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-28 03:02:42,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:42,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017717333] [2020-11-28 03:02:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:43,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017717333] [2020-11-28 03:02:43,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:43,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:02:43,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400243896] [2020-11-28 03:02:43,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:02:43,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:43,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:02:43,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:43,048 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:02:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:43,099 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:02:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:02:43,100 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:02:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:43,119 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:02:43,119 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:02:43,120 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 [2020-11-28 03:02:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:02:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:02:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:02:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:02:43,255 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:02:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:43,256 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:02:43,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:02:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:02:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:02:43,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:43,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:43,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:02:43,259 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:43,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:43,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-28 03:02:43,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:43,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310759461] [2020-11-28 03:02:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:43,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310759461] [2020-11-28 03:02:43,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:43,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:02:43,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002460779] [2020-11-28 03:02:43,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:02:43,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:43,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:02:43,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:02:43,396 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-28 03:02:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:43,427 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-28 03:02:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:02:43,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-28 03:02:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:43,432 INFO L225 Difference]: With dead ends: 217 [2020-11-28 03:02:43,432 INFO L226 Difference]: Without dead ends: 217 [2020-11-28 03:02:43,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:02:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-28 03:02:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-28 03:02:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-28 03:02:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-28 03:02:43,456 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-28 03:02:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:43,456 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-28 03:02:43,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:02:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-28 03:02:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:02:43,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:43,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:43,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:02:43,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-28 03:02:43,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:43,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25973227] [2020-11-28 03:02:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:43,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25973227] [2020-11-28 03:02:43,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:43,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:02:43,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445841103] [2020-11-28 03:02:43,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:02:43,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:43,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:02:43,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:43,585 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-28 03:02:43,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:43,622 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-28 03:02:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:43,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:02:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:43,625 INFO L225 Difference]: With dead ends: 136 [2020-11-28 03:02:43,625 INFO L226 Difference]: Without dead ends: 136 [2020-11-28 03:02:43,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:43,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-28 03:02:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-28 03:02:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 03:02:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-28 03:02:43,636 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-28 03:02:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:43,636 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-28 03:02:43,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:02:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-28 03:02:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:02:43,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:43,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:43,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:02:43,644 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:43,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-28 03:02:43,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:43,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652178062] [2020-11-28 03:02:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:43,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652178062] [2020-11-28 03:02:43,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:43,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:02:43,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876441604] [2020-11-28 03:02:43,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:02:43,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:02:43,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:43,762 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-28 03:02:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:43,823 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-28 03:02:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:02:43,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:02:43,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:43,825 INFO L225 Difference]: With dead ends: 109 [2020-11-28 03:02:43,825 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:02:43,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:02:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-28 03:02:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:02:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-28 03:02:43,845 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-28 03:02:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:43,846 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-28 03:02:43,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:02:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-28 03:02:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:02:43,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:43,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:43,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:02:43,855 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-28 03:02:43,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:43,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107841358] [2020-11-28 03:02:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:44,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107841358] [2020-11-28 03:02:44,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:44,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:02:44,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983081759] [2020-11-28 03:02:44,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:02:44,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:44,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:02:44,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:44,044 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-11-28 03:02:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:44,148 INFO L93 Difference]: Finished difference Result 188 states and 388 transitions. [2020-11-28 03:02:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:02:44,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:02:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:44,150 INFO L225 Difference]: With dead ends: 188 [2020-11-28 03:02:44,150 INFO L226 Difference]: Without dead ends: 124 [2020-11-28 03:02:44,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:02:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-28 03:02:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-11-28 03:02:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 03:02:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 229 transitions. [2020-11-28 03:02:44,158 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 229 transitions. Word has length 18 [2020-11-28 03:02:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:44,172 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 229 transitions. [2020-11-28 03:02:44,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:02:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 229 transitions. [2020-11-28 03:02:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:02:44,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:44,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:44,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:02:44,174 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-11-28 03:02:44,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:44,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092622314] [2020-11-28 03:02:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:44,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092622314] [2020-11-28 03:02:44,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:44,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:02:44,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677876981] [2020-11-28 03:02:44,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:02:44,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:44,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:02:44,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:44,237 INFO L87 Difference]: Start difference. First operand 109 states and 229 transitions. Second operand 4 states. [2020-11-28 03:02:44,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:44,273 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-11-28 03:02:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:44,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 03:02:44,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:44,275 INFO L225 Difference]: With dead ends: 123 [2020-11-28 03:02:44,275 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 03:02:44,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 03:02:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-28 03:02:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 03:02:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2020-11-28 03:02:44,278 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 18 [2020-11-28 03:02:44,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:44,279 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2020-11-28 03:02:44,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:02:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2020-11-28 03:02:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:02:44,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:44,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:44,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:02:44,280 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash 30994256, now seen corresponding path program 3 times [2020-11-28 03:02:44,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:44,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299591356] [2020-11-28 03:02:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:44,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299591356] [2020-11-28 03:02:44,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:44,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:02:44,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662388122] [2020-11-28 03:02:44,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:02:44,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:02:44,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:02:44,358 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand 4 states. [2020-11-28 03:02:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:44,379 INFO L93 Difference]: Finished difference Result 42 states and 68 transitions. [2020-11-28 03:02:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:02:44,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 03:02:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:44,379 INFO L225 Difference]: With dead ends: 42 [2020-11-28 03:02:44,380 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:02:44,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:02:44,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:02:44,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:02:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:02:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:02:44,381 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:02:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:44,381 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:02:44,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:02:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:02:44,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:02:44,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:02:44,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:44 BasicIcfg [2020-11-28 03:02:44,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:44,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:44,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:44,387 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:44,387 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:38" (3/4) ... [2020-11-28 03:02:44,391 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:02:44,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:02:44,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:02:44,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:02:44,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:02:44,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:02:44,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:44,407 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:02:44,455 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5e1b45d1-4fa3-494c-82d5-269c8cf51934/bin/uautomizer/witness.graphml [2020-11-28 03:02:44,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:44,457 INFO L168 Benchmark]: Toolchain (without parser) took 7204.64 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 55.5 MB in the beginning and 73.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:44,458 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 73.0 MB in the end (delta: 57.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:44,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.21 ms. Allocated memory is still 96.5 MB. Free memory was 55.3 MB in the beginning and 53.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:44,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.06 ms. Allocated memory is still 96.5 MB. Free memory was 53.1 MB in the beginning and 51.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:44,460 INFO L168 Benchmark]: Boogie Preprocessor took 65.15 ms. Allocated memory is still 96.5 MB. Free memory was 51.4 MB in the beginning and 49.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:44,460 INFO L168 Benchmark]: RCFGBuilder took 747.87 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 49.8 MB in the beginning and 83.6 MB in the end (delta: -33.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:44,461 INFO L168 Benchmark]: TraceAbstraction took 5444.23 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 83.0 MB in the beginning and 76.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:44,462 INFO L168 Benchmark]: Witness Printer took 69.21 ms. Allocated memory is still 142.6 MB. Free memory was 76.4 MB in the beginning and 73.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:44,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 73.0 MB in the end (delta: 57.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 777.21 ms. Allocated memory is still 96.5 MB. Free memory was 55.3 MB in the beginning and 53.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.06 ms. Allocated memory is still 96.5 MB. Free memory was 53.1 MB in the beginning and 51.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.15 ms. Allocated memory is still 96.5 MB. Free memory was 51.4 MB in the beginning and 49.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 747.87 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 49.8 MB in the beginning and 83.6 MB in the end (delta: -33.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5444.23 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 83.0 MB in the beginning and 76.4 MB in the end (delta: 6.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Witness Printer took 69.21 ms. Allocated memory is still 142.6 MB. Free memory was 76.4 MB in the beginning and 73.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 952 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 139 SDtfs, 76 SDslu, 194 SDs, 0 SdLazy, 72 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...