/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:42:07,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:42:07,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:42:07,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:42:07,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:42:07,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:42:07,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:42:07,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:42:07,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:42:07,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:42:07,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:42:07,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:42:07,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:42:07,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:42:07,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:42:07,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:42:07,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:42:07,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:42:07,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:42:07,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:42:07,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:42:07,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:42:07,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:42:07,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:42:07,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:42:07,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:42:07,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:42:07,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:42:07,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:42:07,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:42:07,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:42:07,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:42:07,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:42:07,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:42:07,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:42:07,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:42:07,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:42:07,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:42:07,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:42:07,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:42:07,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:42:07,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:42:07,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:42:07,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:42:07,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:42:07,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:42:07,661 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:42:07,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:42:07,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:42:07,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:42:07,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:42:07,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:42:07,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:42:07,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:42:07,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:42:07,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:42:07,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:42:07,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:42:07,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:42:07,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:42:07,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:42:07,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:42:07,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:42:07,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:42:07,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:42:07,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:42:07,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:42:07,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:42:08,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:42:08,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:42:08,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:42:08,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:42:08,098 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:42:08,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2020-12-23 13:42:08,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9562d2ecb/ef4d0cbd49004c21a6c86861b25f2076/FLAG6462a117c [2020-12-23 13:42:09,000 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:42:09,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2020-12-23 13:42:09,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9562d2ecb/ef4d0cbd49004c21a6c86861b25f2076/FLAG6462a117c [2020-12-23 13:42:09,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9562d2ecb/ef4d0cbd49004c21a6c86861b25f2076 [2020-12-23 13:42:09,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:42:09,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:42:09,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:09,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:42:09,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:42:09,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:09,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e723121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09, skipping insertion in model container [2020-12-23 13:42:09,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:09,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:42:09,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:42:09,505 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:09,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:09,731 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:42:09,746 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:09,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:09,924 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:42:09,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09 WrapperNode [2020-12-23 13:42:09,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:09,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:09,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:42:09,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:42:09,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:09,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:09,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:09,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:42:09,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:42:09,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:42:10,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:10,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:10,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:10,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:10,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:10,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:10,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... [2020-12-23 13:42:10,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:42:10,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:42:10,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:42:10,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:42:10,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:42:10,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:42:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:42:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:42:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:42:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:42:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:42:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:42:10,132 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:42:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:42:10,133 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:42:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:42:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:42:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:42:10,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:42:10,139 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:42:10,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:42:10,513 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:42:10,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:10 BoogieIcfgContainer [2020-12-23 13:42:10,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:42:10,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:42:10,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:42:10,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:42:10,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:09" (1/3) ... [2020-12-23 13:42:10,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1893f30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:10, skipping insertion in model container [2020-12-23 13:42:10,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:09" (2/3) ... [2020-12-23 13:42:10,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1893f30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:10, skipping insertion in model container [2020-12-23 13:42:10,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:10" (3/3) ... [2020-12-23 13:42:10,526 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-12-23 13:42:10,534 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:42:10,534 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:42:10,540 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:42:10,541 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:42:10,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,617 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,618 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,620 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,621 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,621 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,621 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,622 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,622 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,630 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,641 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,641 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,655 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,662 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:10,670 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:42:10,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:42:10,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:42:10,738 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:42:10,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:42:10,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:42:10,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:42:10,738 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:42:10,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:42:10,739 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:42:10,764 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:42:10,767 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:42:10,772 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:42:10,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-23 13:42:10,878 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-23 13:42:10,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:42:10,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-23 13:42:10,894 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-23 13:42:13,363 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:42:13,633 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:42:13,728 INFO L131 LiptonReduction]: Checked pairs total: 2020 [2020-12-23 13:42:13,729 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:42:13,736 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-23 13:42:13,763 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-12-23 13:42:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-12-23 13:42:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:42:13,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:13,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:13,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1647941983, now seen corresponding path program 1 times [2020-12-23 13:42:13,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:13,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140144054] [2020-12-23 13:42:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:13,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140144054] [2020-12-23 13:42:13,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:13,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:13,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055962798] [2020-12-23 13:42:13,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:42:13,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:14,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:42:14,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:42:14,019 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-12-23 13:42:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:14,071 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-12-23 13:42:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:42:14,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:42:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:14,099 INFO L225 Difference]: With dead ends: 274 [2020-12-23 13:42:14,099 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 13:42:14,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:42:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 13:42:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-23 13:42:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-23 13:42:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-12-23 13:42:14,199 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-12-23 13:42:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:14,200 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-12-23 13:42:14,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:42:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-12-23 13:42:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:42:14,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:14,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:14,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:42:14,203 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:14,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:14,204 INFO L82 PathProgramCache]: Analyzing trace with hash -453422130, now seen corresponding path program 1 times [2020-12-23 13:42:14,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:14,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134536056] [2020-12-23 13:42:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:14,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134536056] [2020-12-23 13:42:14,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:14,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:14,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083786771] [2020-12-23 13:42:14,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:14,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:14,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:14,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:14,432 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-12-23 13:42:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:14,481 INFO L93 Difference]: Finished difference Result 268 states and 719 transitions. [2020-12-23 13:42:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:14,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:42:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:14,484 INFO L225 Difference]: With dead ends: 268 [2020-12-23 13:42:14,485 INFO L226 Difference]: Without dead ends: 220 [2020-12-23 13:42:14,486 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 [2020-12-23 13:42:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-23 13:42:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-12-23 13:42:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-23 13:42:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 612 transitions. [2020-12-23 13:42:14,505 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 612 transitions. Word has length 9 [2020-12-23 13:42:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:14,505 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 612 transitions. [2020-12-23 13:42:14,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 612 transitions. [2020-12-23 13:42:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:14,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:14,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:14,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:42:14,508 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:14,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:14,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1814079141, now seen corresponding path program 1 times [2020-12-23 13:42:14,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:14,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847711466] [2020-12-23 13:42:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:14,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847711466] [2020-12-23 13:42:14,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:14,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:14,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660917538] [2020-12-23 13:42:14,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:14,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:14,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:14,640 INFO L87 Difference]: Start difference. First operand 220 states and 612 transitions. Second operand 5 states. [2020-12-23 13:42:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:14,751 INFO L93 Difference]: Finished difference Result 295 states and 800 transitions. [2020-12-23 13:42:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:42:14,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:42:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:14,758 INFO L225 Difference]: With dead ends: 295 [2020-12-23 13:42:14,758 INFO L226 Difference]: Without dead ends: 250 [2020-12-23 13:42:14,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:42:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-23 13:42:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2020-12-23 13:42:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-23 13:42:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 641 transitions. [2020-12-23 13:42:14,795 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 641 transitions. Word has length 10 [2020-12-23 13:42:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:14,796 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 641 transitions. [2020-12-23 13:42:14,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 641 transitions. [2020-12-23 13:42:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:14,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:14,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:14,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:42:14,801 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:14,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1172176569, now seen corresponding path program 1 times [2020-12-23 13:42:14,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:14,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410312543] [2020-12-23 13:42:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:14,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410312543] [2020-12-23 13:42:14,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:14,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:14,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875408749] [2020-12-23 13:42:14,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:14,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:14,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:14,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:14,869 INFO L87 Difference]: Start difference. First operand 232 states and 641 transitions. Second operand 5 states. [2020-12-23 13:42:14,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:14,898 INFO L93 Difference]: Finished difference Result 250 states and 665 transitions. [2020-12-23 13:42:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:14,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:42:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:14,901 INFO L225 Difference]: With dead ends: 250 [2020-12-23 13:42:14,901 INFO L226 Difference]: Without dead ends: 214 [2020-12-23 13:42:14,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-23 13:42:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-12-23 13:42:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-23 13:42:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 581 transitions. [2020-12-23 13:42:14,912 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 581 transitions. Word has length 10 [2020-12-23 13:42:14,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:14,912 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 581 transitions. [2020-12-23 13:42:14,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:14,912 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 581 transitions. [2020-12-23 13:42:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:14,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:14,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:14,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:42:14,920 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash 329174463, now seen corresponding path program 1 times [2020-12-23 13:42:14,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:14,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757920891] [2020-12-23 13:42:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:15,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757920891] [2020-12-23 13:42:15,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:15,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:15,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857900947] [2020-12-23 13:42:15,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:15,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:15,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:15,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:15,050 INFO L87 Difference]: Start difference. First operand 214 states and 581 transitions. Second operand 5 states. [2020-12-23 13:42:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:15,080 INFO L93 Difference]: Finished difference Result 226 states and 595 transitions. [2020-12-23 13:42:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:15,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:42:15,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:15,084 INFO L225 Difference]: With dead ends: 226 [2020-12-23 13:42:15,084 INFO L226 Difference]: Without dead ends: 202 [2020-12-23 13:42:15,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-23 13:42:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-23 13:42:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 13:42:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 543 transitions. [2020-12-23 13:42:15,093 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 543 transitions. Word has length 11 [2020-12-23 13:42:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:15,093 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 543 transitions. [2020-12-23 13:42:15,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 543 transitions. [2020-12-23 13:42:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:15,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:15,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:15,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:42:15,097 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:15,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:15,098 INFO L82 PathProgramCache]: Analyzing trace with hash 400886096, now seen corresponding path program 1 times [2020-12-23 13:42:15,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:15,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540679948] [2020-12-23 13:42:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:15,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540679948] [2020-12-23 13:42:15,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:15,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:15,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406064511] [2020-12-23 13:42:15,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:42:15,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:15,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:42:15,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:15,231 INFO L87 Difference]: Start difference. First operand 202 states and 543 transitions. Second operand 6 states. [2020-12-23 13:42:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:15,278 INFO L93 Difference]: Finished difference Result 247 states and 648 transitions. [2020-12-23 13:42:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:15,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 13:42:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:15,280 INFO L225 Difference]: With dead ends: 247 [2020-12-23 13:42:15,280 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 13:42:15,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:42:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 13:42:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-23 13:42:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-23 13:42:15,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-12-23 13:42:15,286 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 11 [2020-12-23 13:42:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:15,286 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-12-23 13:42:15,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:42:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-12-23 13:42:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:42:15,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:15,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:15,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:42:15,288 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1225814647, now seen corresponding path program 1 times [2020-12-23 13:42:15,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:15,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127599975] [2020-12-23 13:42:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:15,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127599975] [2020-12-23 13:42:15,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:15,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:15,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067894595] [2020-12-23 13:42:15,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:15,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:15,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:15,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:15,381 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-12-23 13:42:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:15,419 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-12-23 13:42:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:15,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:42:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:15,420 INFO L225 Difference]: With dead ends: 148 [2020-12-23 13:42:15,420 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 13:42:15,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:42:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 13:42:15,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-23 13:42:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 13:42:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-12-23 13:42:15,425 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-12-23 13:42:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:15,425 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-12-23 13:42:15,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-12-23 13:42:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:42:15,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:15,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:15,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:42:15,426 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:15,427 INFO L82 PathProgramCache]: Analyzing trace with hash 532831146, now seen corresponding path program 1 times [2020-12-23 13:42:15,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:15,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421164648] [2020-12-23 13:42:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:15,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421164648] [2020-12-23 13:42:15,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:15,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:15,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136912858] [2020-12-23 13:42:15,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:15,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:15,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:15,486 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-12-23 13:42:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:15,517 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-12-23 13:42:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:15,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:42:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:15,520 INFO L225 Difference]: With dead ends: 87 [2020-12-23 13:42:15,520 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 13:42:15,521 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 [2020-12-23 13:42:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 13:42:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 13:42:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 13:42:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-12-23 13:42:15,524 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-12-23 13:42:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:15,524 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-12-23 13:42:15,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-12-23 13:42:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:42:15,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:15,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:15,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:42:15,526 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:15,526 INFO L82 PathProgramCache]: Analyzing trace with hash -206155871, now seen corresponding path program 1 times [2020-12-23 13:42:15,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:15,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717098368] [2020-12-23 13:42:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:15,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717098368] [2020-12-23 13:42:15,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:15,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:15,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491503738] [2020-12-23 13:42:15,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:15,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:15,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:15,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:15,580 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-12-23 13:42:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:15,614 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-12-23 13:42:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:15,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:42:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:15,616 INFO L225 Difference]: With dead ends: 62 [2020-12-23 13:42:15,616 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 13:42:15,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:15,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 13:42:15,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 13:42:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 13:42:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-12-23 13:42:15,619 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-12-23 13:42:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:15,619 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-12-23 13:42:15,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-12-23 13:42:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:42:15,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:15,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:15,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:42:15,620 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2107760638, now seen corresponding path program 1 times [2020-12-23 13:42:15,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:15,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826851936] [2020-12-23 13:42:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:15,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826851936] [2020-12-23 13:42:15,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:15,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:42:15,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436419670] [2020-12-23 13:42:15,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:42:15,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:42:15,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:15,713 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-12-23 13:42:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:15,770 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-12-23 13:42:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:42:15,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 13:42:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:15,772 INFO L225 Difference]: With dead ends: 40 [2020-12-23 13:42:15,773 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 13:42:15,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:42:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 13:42:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 13:42:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 13:42:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-12-23 13:42:15,776 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-12-23 13:42:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:15,776 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-12-23 13:42:15,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:42:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-12-23 13:42:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:42:15,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:15,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:15,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:42:15,779 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:15,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:15,782 INFO L82 PathProgramCache]: Analyzing trace with hash 202243322, now seen corresponding path program 1 times [2020-12-23 13:42:15,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:15,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639432502] [2020-12-23 13:42:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:15,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639432502] [2020-12-23 13:42:15,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:15,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:15,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40255509] [2020-12-23 13:42:15,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:15,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:15,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:15,875 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-12-23 13:42:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:15,897 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-23 13:42:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:15,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 13:42:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:15,897 INFO L225 Difference]: With dead ends: 33 [2020-12-23 13:42:15,898 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:42:15,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:42:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:42:15,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:42:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:42:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:42:15,899 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-23 13:42:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:15,901 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:42:15,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:42:15,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:42:15,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:42:15,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:15 BasicIcfg [2020-12-23 13:42:15,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:42:15,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:42:15,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:42:15,910 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:42:15,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:10" (3/4) ... [2020-12-23 13:42:15,915 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:42:15,923 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:42:15,923 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:42:15,923 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:42:15,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:42:15,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:42:15,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:15,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:16,027 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe018_pso.oepc.i-witness.graphml [2020-12-23 13:42:16,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:42:16,029 INFO L168 Benchmark]: Toolchain (without parser) took 6762.91 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 132.0 MB in the beginning and 183.3 MB in the end (delta: -51.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:16,030 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory was 131.6 MB in the beginning and 131.5 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:16,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.29 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 134.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:16,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.12 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 132.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:16,037 INFO L168 Benchmark]: Boogie Preprocessor took 28.89 ms. Allocated memory is still 158.3 MB. Free memory was 132.2 MB in the beginning and 131.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:16,038 INFO L168 Benchmark]: RCFGBuilder took 496.68 ms. Allocated memory is still 158.3 MB. Free memory was 131.1 MB in the beginning and 109.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:16,038 INFO L168 Benchmark]: TraceAbstraction took 5390.30 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 108.6 MB in the beginning and 186.4 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:16,039 INFO L168 Benchmark]: Witness Printer took 117.80 ms. Allocated memory is still 229.6 MB. Free memory was 186.4 MB in the beginning and 183.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:16,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory was 131.6 MB in the beginning and 131.5 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 657.29 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 134.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 63.12 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 132.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.89 ms. Allocated memory is still 158.3 MB. Free memory was 132.2 MB in the beginning and 131.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 496.68 ms. Allocated memory is still 158.3 MB. Free memory was 131.1 MB in the beginning and 109.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5390.30 ms. Allocated memory was 158.3 MB in the beginning and 229.6 MB in the end (delta: 71.3 MB). Free memory was 108.6 MB in the beginning and 186.4 MB in the end (delta: -77.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 117.80 ms. Allocated memory is still 229.6 MB. Free memory was 186.4 MB in the beginning and 183.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 758 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 53 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.9s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2020 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 220 SDtfs, 244 SDslu, 367 SDs, 0 SdLazy, 167 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 6005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...