./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.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_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/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 cf3ac498255e2c15379e1132c88b889a830f4be4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:07:36,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:07:36,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:07:36,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:07:36,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:07:36,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:07:36,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:07:36,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:07:36,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:07:36,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:07:36,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:07:36,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:07:36,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:07:36,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:07:36,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:07:36,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:07:36,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:07:36,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:07:36,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:07:36,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:07:36,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:07:36,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:07:36,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:07:36,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:07:36,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:07:36,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:07:36,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:07:36,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:07:36,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:07:36,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:07:36,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:07:36,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:07:36,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:07:36,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:07:36,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:07:36,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:07:36,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:07:36,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:07:36,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:07:36,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:07:36,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:07:36,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:07:36,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:07:36,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:07:36,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:07:36,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:07:36,846 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:07:36,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:07:36,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:07:36,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:07:36,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:07:36,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:07:36,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:07:36,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:07:36,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:07:36,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:07:36,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:07:36,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:07:36,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:07:36,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:07:36,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:07:36,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:07:36,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:07:36,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:07:36,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:07:36,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:07:36,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:07:36,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:07:36,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:07:36,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:07:36,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:07:36,852 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_f82dd192-d540-4d45-8f42-b86ff8e1dd34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf3ac498255e2c15379e1132c88b889a830f4be4 [2020-11-29 20:07:37,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:07:37,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:07:37,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:07:37,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:07:37,139 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:07:37,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.i [2020-11-29 20:07:37,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/data/47a67904e/25c6f3d3bf8d4cf6b019d6cbbd1489dd/FLAG16485a6d3 [2020-11-29 20:07:37,845 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:07:37,845 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/sv-benchmarks/c/pthread-wmm/safe030_tso.oepc.i [2020-11-29 20:07:37,861 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/data/47a67904e/25c6f3d3bf8d4cf6b019d6cbbd1489dd/FLAG16485a6d3 [2020-11-29 20:07:38,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/data/47a67904e/25c6f3d3bf8d4cf6b019d6cbbd1489dd [2020-11-29 20:07:38,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:07:38,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:07:38,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:07:38,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:07:38,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:07:38,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6882bff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38, skipping insertion in model container [2020-11-29 20:07:38,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:07:38,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:07:38,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:07:38,658 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:07:38,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:07:38,801 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:07:38,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38 WrapperNode [2020-11-29 20:07:38,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:07:38,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:07:38,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:07:38,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:07:38,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:07:38,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:07:38,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:07:38,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:07:38,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... [2020-11-29 20:07:38,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:07:38,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:07:38,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:07:38,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:07:38,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/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 [2020-11-29 20:07:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:07:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 20:07:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:07:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:07:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 20:07:39,003 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 20:07:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 20:07:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 20:07:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 20:07:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 20:07:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:07:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 20:07:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:07:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:07:39,006 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 20:07:39,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:07:39,407 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 20:07:39,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:39 BoogieIcfgContainer [2020-11-29 20:07:39,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:07:39,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:07:39,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:07:39,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:07:39,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:07:38" (1/3) ... [2020-11-29 20:07:39,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73521747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:07:39, skipping insertion in model container [2020-11-29 20:07:39,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:07:38" (2/3) ... [2020-11-29 20:07:39,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73521747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:07:39, skipping insertion in model container [2020-11-29 20:07:39,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:39" (3/3) ... [2020-11-29 20:07:39,427 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2020-11-29 20:07:39,438 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 20:07:39,438 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:07:39,442 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:07:39,444 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 20:07:39,473 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,474 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,474 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,475 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,475 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,476 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,476 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,476 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,477 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,477 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,478 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,478 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,492 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,492 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:07:39,495 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 20:07:39,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 20:07:39,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:07:39,525 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:07:39,525 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:07:39,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:07:39,526 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:07:39,526 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:07:39,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:07:39,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:07:39,537 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 20:07:39,539 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-29 20:07:39,542 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-29 20:07:39,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-29 20:07:39,609 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-29 20:07:39,613 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 20:07:39,618 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 20:07:39,621 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 20:07:41,210 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-29 20:07:41,578 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-29 20:07:41,688 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-29 20:07:41,745 INFO L131 LiptonReduction]: Checked pairs total: 3066 [2020-11-29 20:07:41,746 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-29 20:07:41,751 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-29 20:07:41,778 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-29 20:07:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-29 20:07:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:07:41,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:41,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:41,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash 147242941, now seen corresponding path program 1 times [2020-11-29 20:07:41,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:41,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526723099] [2020-11-29 20:07:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:41,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526723099] [2020-11-29 20:07:41,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:41,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:07:41,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062263825] [2020-11-29 20:07:41,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:07:41,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:42,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:07:42,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:07:42,017 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-29 20:07:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:42,064 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-29 20:07:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:07:42,066 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 20:07:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:42,080 INFO L225 Difference]: With dead ends: 362 [2020-11-29 20:07:42,081 INFO L226 Difference]: Without dead ends: 298 [2020-11-29 20:07:42,082 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 [2020-11-29 20:07:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-29 20:07:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-29 20:07:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-29 20:07:42,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-29 20:07:42,160 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-29 20:07:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:42,161 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-29 20:07:42,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:07:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-29 20:07:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:07:42,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:42,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:42,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:07:42,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:42,170 INFO L82 PathProgramCache]: Analyzing trace with hash 269557700, now seen corresponding path program 1 times [2020-11-29 20:07:42,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:42,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148033705] [2020-11-29 20:07:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:42,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148033705] [2020-11-29 20:07:42,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:42,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:07:42,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447083548] [2020-11-29 20:07:42,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:07:42,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:07:42,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:07:42,279 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-29 20:07:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:42,299 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-29 20:07:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:07:42,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 20:07:42,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:42,302 INFO L225 Difference]: With dead ends: 217 [2020-11-29 20:07:42,303 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 20:07:42,303 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 [2020-11-29 20:07:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 20:07:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-29 20:07:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-29 20:07:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-29 20:07:42,332 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-29 20:07:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:42,332 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-29 20:07:42,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:07:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-29 20:07:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:07:42,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:42,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:42,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:07:42,334 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1876534856, now seen corresponding path program 1 times [2020-11-29 20:07:42,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:42,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562772993] [2020-11-29 20:07:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:42,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562772993] [2020-11-29 20:07:42,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:42,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:07:42,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203842490] [2020-11-29 20:07:42,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:07:42,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:42,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:07:42,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:07:42,453 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-29 20:07:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:42,482 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-29 20:07:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:07:42,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 20:07:42,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:42,486 INFO L225 Difference]: With dead ends: 136 [2020-11-29 20:07:42,486 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 20:07:42,487 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 [2020-11-29 20:07:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 20:07:42,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-29 20:07:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 20:07:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-29 20:07:42,495 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-29 20:07:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:42,499 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-29 20:07:42,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:07:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-29 20:07:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:07:42,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:42,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:42,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:07:42,506 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:42,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1466848330, now seen corresponding path program 1 times [2020-11-29 20:07:42,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:42,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279896086] [2020-11-29 20:07:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:42,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279896086] [2020-11-29 20:07:42,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:42,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:07:42,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367028485] [2020-11-29 20:07:42,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:07:42,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:42,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:07:42,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:07:42,585 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-29 20:07:42,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:42,620 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-29 20:07:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:07:42,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 20:07:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:42,622 INFO L225 Difference]: With dead ends: 109 [2020-11-29 20:07:42,622 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 20:07:42,622 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 [2020-11-29 20:07:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 20:07:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-29 20:07:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 20:07:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-29 20:07:42,628 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-29 20:07:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:42,628 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-29 20:07:42,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:07:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-29 20:07:42,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:07:42,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:42,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:42,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:07:42,630 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:42,631 INFO L82 PathProgramCache]: Analyzing trace with hash -182122517, now seen corresponding path program 1 times [2020-11-29 20:07:42,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:42,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931932428] [2020-11-29 20:07:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:42,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931932428] [2020-11-29 20:07:42,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:42,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:07:42,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684358873] [2020-11-29 20:07:42,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:07:42,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:42,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:07:42,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:07:42,734 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-29 20:07:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:42,761 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-29 20:07:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:07:42,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 20:07:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:42,763 INFO L225 Difference]: With dead ends: 135 [2020-11-29 20:07:42,763 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 20:07:42,763 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 [2020-11-29 20:07:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 20:07:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-29 20:07:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 20:07:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-11-29 20:07:42,769 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 18 [2020-11-29 20:07:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:42,769 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-11-29 20:07:42,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:07:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-11-29 20:07:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:07:42,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:42,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:42,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:07:42,771 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1711993673, now seen corresponding path program 2 times [2020-11-29 20:07:42,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:42,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761334669] [2020-11-29 20:07:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:42,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761334669] [2020-11-29 20:07:42,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:42,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:07:42,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102877041] [2020-11-29 20:07:42,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:07:42,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:42,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:07:42,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:07:42,874 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-11-29 20:07:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:42,901 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-29 20:07:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:07:42,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 20:07:42,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:42,902 INFO L225 Difference]: With dead ends: 99 [2020-11-29 20:07:42,902 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:07:42,903 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 [2020-11-29 20:07:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:07:42,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 20:07:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:07:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-29 20:07:42,906 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-11-29 20:07:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:42,906 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-29 20:07:42,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:07:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-29 20:07:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:07:42,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:07:42,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:07:42,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:07:42,908 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:07:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:07:42,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1121061337, now seen corresponding path program 3 times [2020-11-29 20:07:42,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:07:42,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013286838] [2020-11-29 20:07:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:07:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:07:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:07:42,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013286838] [2020-11-29 20:07:42,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:07:42,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:07:42,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442341007] [2020-11-29 20:07:42,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:07:42,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:07:42,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:07:42,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:07:42,988 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 4 states. [2020-11-29 20:07:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:07:43,007 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-29 20:07:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:07:43,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 20:07:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:07:43,008 INFO L225 Difference]: With dead ends: 36 [2020-11-29 20:07:43,008 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:07:43,009 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 [2020-11-29 20:07:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:07:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:07:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:07:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:07:43,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 20:07:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:07:43,010 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:07:43,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:07:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:07:43,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:07:43,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:07:43,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:07:43 BasicIcfg [2020-11-29 20:07:43,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:07:43,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:07:43,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:07:43,015 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:07:43,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:07:39" (3/4) ... [2020-11-29 20:07:43,021 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:07:43,028 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 20:07:43,028 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 20:07:43,028 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 20:07:43,035 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 20:07:43,035 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:07:43,036 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:07:43,036 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:07:43,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f82dd192-d540-4d45-8f42-b86ff8e1dd34/bin/uautomizer/witness.graphml [2020-11-29 20:07:43,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:07:43,095 INFO L168 Benchmark]: Toolchain (without parser) took 4954.90 ms. Allocated memory was 79.7 MB in the beginning and 142.6 MB in the end (delta: 62.9 MB). Free memory was 46.3 MB in the beginning and 95.6 MB in the end (delta: -49.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:43,095 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 79.7 MB. Free memory was 38.9 MB in the beginning and 38.9 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:07:43,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.50 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.1 MB in the beginning and 53.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:43,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 96.5 MB. Free memory was 53.6 MB in the beginning and 51.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:43,097 INFO L168 Benchmark]: Boogie Preprocessor took 58.82 ms. Allocated memory is still 96.5 MB. Free memory was 51.8 MB in the beginning and 50.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:07:43,098 INFO L168 Benchmark]: RCFGBuilder took 487.25 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 54.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:43,098 INFO L168 Benchmark]: TraceAbstraction took 3603.33 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 54.9 MB in the beginning and 97.7 MB in the end (delta: -42.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:43,099 INFO L168 Benchmark]: Witness Printer took 79.25 ms. Allocated memory is still 142.6 MB. Free memory was 97.7 MB in the beginning and 95.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:07:43,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 79.7 MB. Free memory was 38.9 MB in the beginning and 38.9 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 654.50 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.1 MB in the beginning and 53.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.47 ms. Allocated memory is still 96.5 MB. Free memory was 53.6 MB in the beginning and 51.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.82 ms. Allocated memory is still 96.5 MB. Free memory was 51.8 MB in the beginning and 50.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 487.25 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 54.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3603.33 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 54.9 MB in the beginning and 97.7 MB in the end (delta: -42.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 79.25 ms. Allocated memory is still 142.6 MB. Free memory was 97.7 MB in the beginning and 95.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 80 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 84 PlacesBefore, 32 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 3066 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 128 SDtfs, 64 SDslu, 159 SDs, 0 SdLazy, 50 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2488 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...