./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/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 42b797c7228e4cc81a806d8614f65a2608450f7f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:31:41,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:31:41,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:31:42,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:31:42,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:31:42,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:31:42,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:31:42,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:31:42,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:31:42,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:31:42,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:31:42,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:31:42,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:31:42,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:31:42,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:31:42,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:31:42,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:31:42,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:31:42,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:31:42,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:31:42,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:31:42,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:31:42,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:31:42,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:31:42,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:31:42,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:31:42,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:31:42,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:31:42,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:31:42,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:31:42,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:31:42,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:31:42,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:31:42,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:31:42,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:31:42,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:31:42,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:31:42,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:31:42,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:31:42,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:31:42,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:31:42,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:31:42,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:31:42,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:31:42,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:31:42,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:31:42,160 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:31:42,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:31:42,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:31:42,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:31:42,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:31:42,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:31:42,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:31:42,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:31:42,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:31:42,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:31:42,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:31:42,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:31:42,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:31:42,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:31:42,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:31:42,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:31:42,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:31:42,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:31:42,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:31:42,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:31:42,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:31:42,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:31:42,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:31:42,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:31:42,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:31:42,168 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_ad395d46-31c1-4ebb-821e-182bf745a31e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b797c7228e4cc81a806d8614f65a2608450f7f [2020-12-01 15:31:42,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:31:42,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:31:42,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:31:42,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:31:42,572 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:31:42,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2020-12-01 15:31:42,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/data/33e4fd69d/47f5111e4fc74f84a87d64a5bce5c98c/FLAG3208a5d83 [2020-12-01 15:31:43,310 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:31:43,311 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2020-12-01 15:31:43,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/data/33e4fd69d/47f5111e4fc74f84a87d64a5bce5c98c/FLAG3208a5d83 [2020-12-01 15:31:43,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/data/33e4fd69d/47f5111e4fc74f84a87d64a5bce5c98c [2020-12-01 15:31:43,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:31:43,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:31:43,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:31:43,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:31:43,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:31:43,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:31:43" (1/1) ... [2020-12-01 15:31:43,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f52b225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:43, skipping insertion in model container [2020-12-01 15:31:43,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:31:43" (1/1) ... [2020-12-01 15:31:43,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:31:43,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:31:44,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:31:44,210 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:31:44,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:31:44,376 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:31:44,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44 WrapperNode [2020-12-01 15:31:44,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:31:44,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:31:44,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:31:44,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:31:44,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:31:44,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:31:44,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:31:44,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:31:44,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... [2020-12-01 15:31:44,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:31:44,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:31:44,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:31:44,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:31:44,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/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 [2020-12-01 15:31:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:31:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:31:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:31:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:31:44,595 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:31:44,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:31:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:31:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:31:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-01 15:31:44,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-01 15:31:44,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:31:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:31:44,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:31:44,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:31:44,599 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:31:45,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:31:45,110 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:31:45,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:31:45 BoogieIcfgContainer [2020-12-01 15:31:45,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:31:45,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:31:45,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:31:45,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:31:45,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:31:43" (1/3) ... [2020-12-01 15:31:45,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bd7b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:31:45, skipping insertion in model container [2020-12-01 15:31:45,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:31:44" (2/3) ... [2020-12-01 15:31:45,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bd7b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:31:45, skipping insertion in model container [2020-12-01 15:31:45,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:31:45" (3/3) ... [2020-12-01 15:31:45,151 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2020-12-01 15:31:45,179 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:31:45,179 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:31:45,183 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:31:45,184 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:31:45,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,254 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,255 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,255 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,258 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,258 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,258 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,261 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,268 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,268 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,268 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,269 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,269 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,269 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,270 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,270 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,271 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,271 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,271 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,272 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,275 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,294 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,295 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,295 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,296 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,323 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:31:45,329 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:31:45,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-01 15:31:45,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:31:45,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:31:45,398 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:31:45,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:31:45,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:31:45,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:31:45,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:31:45,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:31:45,428 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:31:45,431 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 91 transitions, 202 flow [2020-12-01 15:31:45,435 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 91 transitions, 202 flow [2020-12-01 15:31:45,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 91 transitions, 202 flow [2020-12-01 15:31:45,553 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2020-12-01 15:31:45,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:31:45,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 3/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-12-01 15:31:45,569 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-12-01 15:31:48,802 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-01 15:31:49,689 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-01 15:31:50,461 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-01 15:31:50,767 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-01 15:31:50,900 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-01 15:31:51,403 INFO L131 LiptonReduction]: Checked pairs total: 3854 [2020-12-01 15:31:51,404 INFO L133 LiptonReduction]: Total number of compositions: 80 [2020-12-01 15:31:51,411 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-12-01 15:31:51,479 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-01 15:31:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-01 15:31:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:31:51,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:51,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:51,495 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash -709438342, now seen corresponding path program 1 times [2020-12-01 15:31:51,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:51,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171235726] [2020-12-01 15:31:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:51,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171235726] [2020-12-01 15:31:51,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:51,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:31:51,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141849416] [2020-12-01 15:31:51,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:31:51,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:51,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:31:51,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:31:51,844 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-01 15:31:51,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:51,931 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-12-01 15:31:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:31:51,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-01 15:31:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:51,978 INFO L225 Difference]: With dead ends: 670 [2020-12-01 15:31:51,978 INFO L226 Difference]: Without dead ends: 526 [2020-12-01 15:31:51,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:31:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-01 15:31:52,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-01 15:31:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-01 15:31:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-01 15:31:52,117 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-12-01 15:31:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:52,118 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-01 15:31:52,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:31:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-01 15:31:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:31:52,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:52,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:52,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:31:52,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:52,128 INFO L82 PathProgramCache]: Analyzing trace with hash 839232956, now seen corresponding path program 1 times [2020-12-01 15:31:52,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:52,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696682573] [2020-12-01 15:31:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:52,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696682573] [2020-12-01 15:31:52,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:52,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:31:52,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367321657] [2020-12-01 15:31:52,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:52,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:52,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:52,334 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-01 15:31:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:52,371 INFO L93 Difference]: Finished difference Result 634 states and 2040 transitions. [2020-12-01 15:31:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:31:52,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:31:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:52,377 INFO L225 Difference]: With dead ends: 634 [2020-12-01 15:31:52,377 INFO L226 Difference]: Without dead ends: 322 [2020-12-01 15:31:52,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-12-01 15:31:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-12-01 15:31:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-12-01 15:31:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1008 transitions. [2020-12-01 15:31:52,416 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1008 transitions. Word has length 11 [2020-12-01 15:31:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:52,416 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 1008 transitions. [2020-12-01 15:31:52,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1008 transitions. [2020-12-01 15:31:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:31:52,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:52,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:52,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:31:52,422 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:52,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1127842304, now seen corresponding path program 1 times [2020-12-01 15:31:52,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:52,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293186168] [2020-12-01 15:31:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:52,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293186168] [2020-12-01 15:31:52,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:52,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:31:52,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846220609] [2020-12-01 15:31:52,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:31:52,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:52,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:31:52,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:31:52,526 INFO L87 Difference]: Start difference. First operand 322 states and 1008 transitions. Second operand 3 states. [2020-12-01 15:31:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:52,535 INFO L93 Difference]: Finished difference Result 304 states and 939 transitions. [2020-12-01 15:31:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:31:52,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-01 15:31:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:52,540 INFO L225 Difference]: With dead ends: 304 [2020-12-01 15:31:52,541 INFO L226 Difference]: Without dead ends: 304 [2020-12-01 15:31:52,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:31:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-12-01 15:31:52,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-12-01 15:31:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-12-01 15:31:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 939 transitions. [2020-12-01 15:31:52,565 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 939 transitions. Word has length 12 [2020-12-01 15:31:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:52,566 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 939 transitions. [2020-12-01 15:31:52,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:31:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 939 transitions. [2020-12-01 15:31:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:31:52,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:52,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:52,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:31:52,569 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:52,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:52,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1624168671, now seen corresponding path program 1 times [2020-12-01 15:31:52,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:52,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114585069] [2020-12-01 15:31:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:52,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114585069] [2020-12-01 15:31:52,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:52,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:31:52,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081009413] [2020-12-01 15:31:52,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:52,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:52,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:52,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:52,631 INFO L87 Difference]: Start difference. First operand 304 states and 939 transitions. Second operand 4 states. [2020-12-01 15:31:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:52,672 INFO L93 Difference]: Finished difference Result 406 states and 1208 transitions. [2020-12-01 15:31:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:31:52,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 15:31:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:52,676 INFO L225 Difference]: With dead ends: 406 [2020-12-01 15:31:52,676 INFO L226 Difference]: Without dead ends: 226 [2020-12-01 15:31:52,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-01 15:31:52,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-01 15:31:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-01 15:31:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-01 15:31:52,691 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-01 15:31:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:52,691 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-01 15:31:52,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-01 15:31:52,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:31:52,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:52,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:52,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:31:52,695 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:52,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:52,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1524641156, now seen corresponding path program 1 times [2020-12-01 15:31:52,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:52,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235244136] [2020-12-01 15:31:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:52,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235244136] [2020-12-01 15:31:52,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:52,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:31:52,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373927826] [2020-12-01 15:31:52,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:52,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:52,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:52,767 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-01 15:31:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:52,818 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-01 15:31:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:31:52,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-01 15:31:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:52,821 INFO L225 Difference]: With dead ends: 287 [2020-12-01 15:31:52,822 INFO L226 Difference]: Without dead ends: 206 [2020-12-01 15:31:52,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-01 15:31:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-01 15:31:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-01 15:31:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-01 15:31:52,833 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-01 15:31:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:52,834 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-01 15:31:52,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:52,835 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-01 15:31:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:31:52,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:52,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:52,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:31:52,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:52,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:52,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1148644205, now seen corresponding path program 1 times [2020-12-01 15:31:52,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:52,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435118851] [2020-12-01 15:31:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:52,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435118851] [2020-12-01 15:31:52,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:52,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:31:52,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701697497] [2020-12-01 15:31:52,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:31:52,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:52,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:31:52,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:31:52,981 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-01 15:31:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:53,041 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-01 15:31:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:31:53,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 15:31:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:53,044 INFO L225 Difference]: With dead ends: 227 [2020-12-01 15:31:53,044 INFO L226 Difference]: Without dead ends: 162 [2020-12-01 15:31:53,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:31:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-01 15:31:53,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-01 15:31:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-01 15:31:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-01 15:31:53,053 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-01 15:31:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:53,053 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-01 15:31:53,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:31:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-01 15:31:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:31:53,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:53,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:53,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:31:53,055 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:53,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:53,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1193386920, now seen corresponding path program 1 times [2020-12-01 15:31:53,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:53,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917553981] [2020-12-01 15:31:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:53,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917553981] [2020-12-01 15:31:53,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:53,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:31:53,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875054379] [2020-12-01 15:31:53,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:31:53,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:53,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:31:53,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:31:53,146 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-01 15:31:53,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:53,233 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-01 15:31:53,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:31:53,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-01 15:31:53,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:53,235 INFO L225 Difference]: With dead ends: 158 [2020-12-01 15:31:53,235 INFO L226 Difference]: Without dead ends: 125 [2020-12-01 15:31:53,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:31:53,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-01 15:31:53,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-01 15:31:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-01 15:31:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-01 15:31:53,246 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-01 15:31:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:53,247 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-01 15:31:53,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:31:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-01 15:31:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:31:53,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:53,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:53,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:31:53,252 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:53,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1709090152, now seen corresponding path program 1 times [2020-12-01 15:31:53,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:53,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541080641] [2020-12-01 15:31:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:53,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541080641] [2020-12-01 15:31:53,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:53,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:31:53,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353115141] [2020-12-01 15:31:53,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:31:53,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:53,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:31:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:31:53,368 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 7 states. [2020-12-01 15:31:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:53,488 INFO L93 Difference]: Finished difference Result 120 states and 270 transitions. [2020-12-01 15:31:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:31:53,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-01 15:31:53,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:53,490 INFO L225 Difference]: With dead ends: 120 [2020-12-01 15:31:53,490 INFO L226 Difference]: Without dead ends: 111 [2020-12-01 15:31:53,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:31:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-01 15:31:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-12-01 15:31:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-01 15:31:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 254 transitions. [2020-12-01 15:31:53,499 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 254 transitions. Word has length 18 [2020-12-01 15:31:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:53,499 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 254 transitions. [2020-12-01 15:31:53,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:31:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 254 transitions. [2020-12-01 15:31:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 15:31:53,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:53,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:53,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:31:53,501 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:53,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559887, now seen corresponding path program 1 times [2020-12-01 15:31:53,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:53,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651393984] [2020-12-01 15:31:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:53,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651393984] [2020-12-01 15:31:53,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:53,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:31:53,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057223097] [2020-12-01 15:31:53,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:53,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:53,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:53,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:53,574 INFO L87 Difference]: Start difference. First operand 111 states and 254 transitions. Second operand 4 states. [2020-12-01 15:31:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:53,594 INFO L93 Difference]: Finished difference Result 144 states and 327 transitions. [2020-12-01 15:31:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:31:53,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-01 15:31:53,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:53,596 INFO L225 Difference]: With dead ends: 144 [2020-12-01 15:31:53,596 INFO L226 Difference]: Without dead ends: 71 [2020-12-01 15:31:53,597 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 [2020-12-01 15:31:53,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-01 15:31:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-01 15:31:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-01 15:31:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-12-01 15:31:53,600 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 20 [2020-12-01 15:31:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:53,602 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-12-01 15:31:53,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-12-01 15:31:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 15:31:53,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:31:53,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:31:53,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:31:53,604 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:31:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:31:53,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1416850207, now seen corresponding path program 2 times [2020-12-01 15:31:53,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:31:53,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340181964] [2020-12-01 15:31:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:31:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:31:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:31:53,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340181964] [2020-12-01 15:31:53,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:31:53,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:31:53,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983144917] [2020-12-01 15:31:53,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:31:53,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:31:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:31:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:31:53,658 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-12-01 15:31:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:53,679 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-12-01 15:31:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:31:53,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-01 15:31:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:53,679 INFO L225 Difference]: With dead ends: 70 [2020-12-01 15:31:53,679 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:31:53,679 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 [2020-12-01 15:31:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:31:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:31:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:31:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:31:53,680 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-01 15:31:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:53,680 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:31:53,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:31:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:31:53,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:31:53,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:31:53,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:31:53 BasicIcfg [2020-12-01 15:31:53,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:31:53,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:31:53,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:31:53,690 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:31:53,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:31:45" (3/4) ... [2020-12-01 15:31:53,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:31:53,703 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:31:53,703 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:31:53,703 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:31:53,703 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-01 15:31:53,710 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-01 15:31:53,711 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:31:53,711 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:31:53,711 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:31:53,770 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ad395d46-31c1-4ebb-821e-182bf745a31e/bin/uautomizer/witness.graphml [2020-12-01 15:31:53,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:31:53,776 INFO L168 Benchmark]: Toolchain (without parser) took 10218.81 ms. Allocated memory was 96.5 MB in the beginning and 195.0 MB in the end (delta: 98.6 MB). Free memory was 59.7 MB in the beginning and 140.0 MB in the end (delta: -80.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:53,776 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 77.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:31:53,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.09 ms. Allocated memory is still 96.5 MB. Free memory was 59.4 MB in the beginning and 52.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:53,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.11 ms. Allocated memory is still 96.5 MB. Free memory was 52.0 MB in the beginning and 49.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:53,778 INFO L168 Benchmark]: Boogie Preprocessor took 37.15 ms. Allocated memory is still 96.5 MB. Free memory was 49.9 MB in the beginning and 48.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:53,778 INFO L168 Benchmark]: RCFGBuilder took 627.06 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 48.4 MB in the beginning and 93.4 MB in the end (delta: -45.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:53,779 INFO L168 Benchmark]: TraceAbstraction took 8555.21 ms. Allocated memory was 127.9 MB in the beginning and 195.0 MB in the end (delta: 67.1 MB). Free memory was 93.4 MB in the beginning and 143.2 MB in the end (delta: -49.8 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:53,779 INFO L168 Benchmark]: Witness Printer took 81.31 ms. Allocated memory is still 195.0 MB. Free memory was 143.2 MB in the beginning and 140.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:31:53,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 77.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 819.09 ms. Allocated memory is still 96.5 MB. Free memory was 59.4 MB in the beginning and 52.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.11 ms. Allocated memory is still 96.5 MB. Free memory was 52.0 MB in the beginning and 49.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.15 ms. Allocated memory is still 96.5 MB. Free memory was 49.9 MB in the beginning and 48.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 627.06 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 48.4 MB in the beginning and 93.4 MB in the end (delta: -45.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8555.21 ms. Allocated memory was 127.9 MB in the beginning and 195.0 MB in the end (delta: 67.1 MB). Free memory was 93.4 MB in the beginning and 143.2 MB in the end (delta: -49.8 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * Witness Printer took 81.31 ms. Allocated memory is still 195.0 MB. Free memory was 143.2 MB in the beginning and 140.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1383 VarBasedMoverChecksPositive, 68 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 51 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.9s, 101 PlacesBefore, 38 PlacesAfterwards, 91 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 3854 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 209 SDtfs, 230 SDslu, 310 SDs, 0 SdLazy, 184 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 5533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...