/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/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:37:11,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:37:11,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:37:11,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:37:11,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:37:11,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:37:11,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:37:11,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:37:11,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:37:11,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:37:11,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:37:11,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:37:11,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:37:12,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:37:12,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:37:12,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:37:12,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:37:12,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:37:12,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:37:12,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:37:12,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:37:12,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:37:12,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:37:12,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:37:12,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:37:12,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:37:12,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:37:12,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:37:12,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:37:12,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:37:12,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:37:12,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:37:12,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:37:12,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:37:12,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:37:12,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:37:12,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:37:12,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:37:12,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:37:12,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:37:12,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:37:12,063 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 13:37:12,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:37:12,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:37:12,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:37:12,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:37:12,096 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:37:12,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:37:12,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:37:12,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:37:12,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:37:12,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:37:12,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:37:12,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:37:12,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:37:12,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:37:12,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:37:12,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:37:12,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:37:12,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:37:12,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:37:12,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:37:12,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:37:12,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:37:12,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:37:12,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:37:12,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:37:12,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:37:12,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:37:12,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:37:12,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:37:12,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:37:12,519 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:37:12,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-12-23 13:37:12,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/066b8b023/d017ec8780d84c3e9ff67e865e33ba9f/FLAGc74bd3480 [2020-12-23 13:37:13,387 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:37:13,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-12-23 13:37:13,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/066b8b023/d017ec8780d84c3e9ff67e865e33ba9f/FLAGc74bd3480 [2020-12-23 13:37:13,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/066b8b023/d017ec8780d84c3e9ff67e865e33ba9f [2020-12-23 13:37:13,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:37:13,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:37:13,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:37:13,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:37:13,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:37:13,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:37:13" (1/1) ... [2020-12-23 13:37:13,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cb0d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:13, skipping insertion in model container [2020-12-23 13:37:13,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:37:13" (1/1) ... [2020-12-23 13:37:13,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:37:13,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:37:13,938 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/safe000_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~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_p1_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[~__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$tmp_guard1~0,GLOBAL] [2020-12-23 13:37:14,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:37:14,142 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:37:14,158 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:37:14,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:37:14,339 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:37:14,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14 WrapperNode [2020-12-23 13:37:14,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:37:14,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:37:14,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:37:14,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:37:14,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:37:14,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:37:14,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:37:14,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:37:14,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (1/1) ... [2020-12-23 13:37:14,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:37:14,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:37:14,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:37:14,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:37:14,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (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 13:37:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:37:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:37:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:37:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:37:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:37:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:37:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:37:14,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:37:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:37:14,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:37:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:37:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:37:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:37:14,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:37:14,535 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 13:37:14,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:37:14,930 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:37:14,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:37:14 BoogieIcfgContainer [2020-12-23 13:37:14,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:37:14,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:37:14,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:37:14,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:37:14,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:37:13" (1/3) ... [2020-12-23 13:37:14,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfcb131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:37:14, skipping insertion in model container [2020-12-23 13:37:14,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:37:14" (2/3) ... [2020-12-23 13:37:14,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfcb131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:37:14, skipping insertion in model container [2020-12-23 13:37:14,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:37:14" (3/3) ... [2020-12-23 13:37:14,944 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-12-23 13:37:14,952 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:37:14,952 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:37:14,958 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:37:14,959 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:37:15,005 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,005 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,005 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,006 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,006 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,006 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,006 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,007 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,009 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,009 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,010 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,010 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,011 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,013 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,013 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,013 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,014 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,018 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,028 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,028 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,028 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:37:15,031 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:37:15,053 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:37:15,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:37:15,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:37:15,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:37:15,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:37:15,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:37:15,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:37:15,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:37:15,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:37:15,095 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:37:15,097 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:37:15,101 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:37:15,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:37:15,157 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:37:15,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:37:15,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:37:15,166 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:37:18,162 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:37:18,267 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:37:18,499 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:37:18,608 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:37:18,614 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-23 13:37:18,614 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-23 13:37:18,620 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-23 13:37:18,650 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-23 13:37:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-23 13:37:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:37:18,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:18,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:18,662 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:18,668 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-23 13:37:18,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:18,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100870805] [2020-12-23 13:37:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:18,880 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 13:37:18,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100870805] [2020-12-23 13:37:18,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:18,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:37:18,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191440445] [2020-12-23 13:37:18,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:37:18,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:18,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:37:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:37:18,919 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-23 13:37:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:18,978 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-23 13:37:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:37:18,983 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:37:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:19,016 INFO L225 Difference]: With dead ends: 362 [2020-12-23 13:37:19,016 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 13:37:19,018 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 13:37:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 13:37:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-23 13:37:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-23 13:37:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-23 13:37:19,114 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-23 13:37:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:19,115 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-23 13:37:19,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:37:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-23 13:37:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:37:19,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:19,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:19,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:37:19,118 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-23 13:37:19,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:19,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410131947] [2020-12-23 13:37:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:19,317 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 13:37:19,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410131947] [2020-12-23 13:37:19,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:19,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:37:19,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811445131] [2020-12-23 13:37:19,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:37:19,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:19,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:37:19,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:37:19,328 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-23 13:37:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:19,428 INFO L93 Difference]: Finished difference Result 545 states and 1490 transitions. [2020-12-23 13:37:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:37:19,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:37:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:19,433 INFO L225 Difference]: With dead ends: 545 [2020-12-23 13:37:19,434 INFO L226 Difference]: Without dead ends: 422 [2020-12-23 13:37:19,435 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 13:37:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-12-23 13:37:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 352. [2020-12-23 13:37:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-12-23 13:37:19,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 987 transitions. [2020-12-23 13:37:19,467 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 987 transitions. Word has length 9 [2020-12-23 13:37:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:19,468 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 987 transitions. [2020-12-23 13:37:19,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:37:19,468 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 987 transitions. [2020-12-23 13:37:19,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:37:19,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:19,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:19,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:37:19,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:19,471 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2020-12-23 13:37:19,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:19,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754524923] [2020-12-23 13:37:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:19,605 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 13:37:19,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754524923] [2020-12-23 13:37:19,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:19,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:19,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63362913] [2020-12-23 13:37:19,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:19,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:19,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:19,612 INFO L87 Difference]: Start difference. First operand 352 states and 987 transitions. Second operand 5 states. [2020-12-23 13:37:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:19,709 INFO L93 Difference]: Finished difference Result 448 states and 1164 transitions. [2020-12-23 13:37:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:37:19,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:37:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:19,713 INFO L225 Difference]: With dead ends: 448 [2020-12-23 13:37:19,713 INFO L226 Difference]: Without dead ends: 360 [2020-12-23 13:37:19,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:37:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-12-23 13:37:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 302. [2020-12-23 13:37:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-23 13:37:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 814 transitions. [2020-12-23 13:37:19,733 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 814 transitions. Word has length 10 [2020-12-23 13:37:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:19,734 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 814 transitions. [2020-12-23 13:37:19,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 814 transitions. [2020-12-23 13:37:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:37:19,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:19,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:19,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:37:19,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:19,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:19,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1610224715, now seen corresponding path program 1 times [2020-12-23 13:37:19,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:19,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725692353] [2020-12-23 13:37:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:19,889 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 13:37:19,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725692353] [2020-12-23 13:37:19,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:19,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:19,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841993349] [2020-12-23 13:37:19,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:19,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:19,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:19,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:19,895 INFO L87 Difference]: Start difference. First operand 302 states and 814 transitions. Second operand 5 states. [2020-12-23 13:37:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:19,971 INFO L93 Difference]: Finished difference Result 382 states and 984 transitions. [2020-12-23 13:37:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:37:19,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:37:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:19,975 INFO L225 Difference]: With dead ends: 382 [2020-12-23 13:37:19,975 INFO L226 Difference]: Without dead ends: 338 [2020-12-23 13:37:19,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:37:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-23 13:37:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 286. [2020-12-23 13:37:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-23 13:37:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 762 transitions. [2020-12-23 13:37:19,989 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 762 transitions. Word has length 11 [2020-12-23 13:37:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:19,989 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 762 transitions. [2020-12-23 13:37:19,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 762 transitions. [2020-12-23 13:37:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:37:19,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:19,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:19,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:37:19,993 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:19,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:19,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2020-12-23 13:37:19,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:19,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028387287] [2020-12-23 13:37:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:20,081 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 13:37:20,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028387287] [2020-12-23 13:37:20,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:20,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:37:20,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392762476] [2020-12-23 13:37:20,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:20,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:20,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:20,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:20,083 INFO L87 Difference]: Start difference. First operand 286 states and 762 transitions. Second operand 5 states. [2020-12-23 13:37:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:20,134 INFO L93 Difference]: Finished difference Result 368 states and 945 transitions. [2020-12-23 13:37:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:37:20,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:37:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:20,138 INFO L225 Difference]: With dead ends: 368 [2020-12-23 13:37:20,138 INFO L226 Difference]: Without dead ends: 300 [2020-12-23 13:37:20,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 13:37:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-12-23 13:37:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 218. [2020-12-23 13:37:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-23 13:37:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 572 transitions. [2020-12-23 13:37:20,148 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 572 transitions. Word has length 12 [2020-12-23 13:37:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,149 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 572 transitions. [2020-12-23 13:37:20,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 572 transitions. [2020-12-23 13:37:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:37:20,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:20,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:20,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:37:20,151 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:20,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:20,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1069072958, now seen corresponding path program 1 times [2020-12-23 13:37:20,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:20,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658716127] [2020-12-23 13:37:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:20,260 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 13:37:20,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658716127] [2020-12-23 13:37:20,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:20,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:20,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700944319] [2020-12-23 13:37:20,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:20,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:20,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:20,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:20,264 INFO L87 Difference]: Start difference. First operand 218 states and 572 transitions. Second operand 5 states. [2020-12-23 13:37:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:20,320 INFO L93 Difference]: Finished difference Result 278 states and 700 transitions. [2020-12-23 13:37:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:37:20,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:37:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:20,323 INFO L225 Difference]: With dead ends: 278 [2020-12-23 13:37:20,323 INFO L226 Difference]: Without dead ends: 134 [2020-12-23 13:37:20,324 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 13:37:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-23 13:37:20,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-23 13:37:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-23 13:37:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 312 transitions. [2020-12-23 13:37:20,329 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 312 transitions. Word has length 12 [2020-12-23 13:37:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,329 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 312 transitions. [2020-12-23 13:37:20,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:20,330 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 312 transitions. [2020-12-23 13:37:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:37:20,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:20,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:20,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:37:20,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:20,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1136607611, now seen corresponding path program 1 times [2020-12-23 13:37:20,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:20,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493759671] [2020-12-23 13:37:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:20,399 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 13:37:20,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493759671] [2020-12-23 13:37:20,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:20,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:20,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378825693] [2020-12-23 13:37:20,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:20,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:20,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:20,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:20,402 INFO L87 Difference]: Start difference. First operand 134 states and 312 transitions. Second operand 5 states. [2020-12-23 13:37:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:20,443 INFO L93 Difference]: Finished difference Result 162 states and 372 transitions. [2020-12-23 13:37:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:37:20,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:37:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:20,445 INFO L225 Difference]: With dead ends: 162 [2020-12-23 13:37:20,445 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 13:37:20,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:37:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 13:37:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-23 13:37:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 13:37:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 194 transitions. [2020-12-23 13:37:20,449 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 194 transitions. Word has length 14 [2020-12-23 13:37:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,450 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 194 transitions. [2020-12-23 13:37:20,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 194 transitions. [2020-12-23 13:37:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:37:20,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:37:20,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:37:20,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:37:20,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:37:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:37:20,452 INFO L82 PathProgramCache]: Analyzing trace with hash 559846421, now seen corresponding path program 1 times [2020-12-23 13:37:20,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:37:20,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168028472] [2020-12-23 13:37:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:37:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:37:20,546 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 13:37:20,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168028472] [2020-12-23 13:37:20,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:37:20,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:37:20,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085596968] [2020-12-23 13:37:20,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:37:20,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:37:20,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:37:20,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:37:20,557 INFO L87 Difference]: Start difference. First operand 90 states and 194 transitions. Second operand 5 states. [2020-12-23 13:37:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:37:20,593 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-12-23 13:37:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:37:20,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 13:37:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:37:20,602 INFO L225 Difference]: With dead ends: 82 [2020-12-23 13:37:20,602 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:37:20,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:37:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:37:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:37:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:37:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:37:20,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-23 13:37:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:37:20,606 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:37:20,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:37:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:37:20,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:37:20,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:37:20,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:37:20 BasicIcfg [2020-12-23 13:37:20,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:37:20,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:37:20,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:37:20,614 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:37:20,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:37:14" (3/4) ... [2020-12-23 13:37:20,620 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:37:20,629 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:37:20,629 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:37:20,630 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:37:20,638 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:37:20,639 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:37:20,639 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:37:20,639 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:37:20,736 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe000_pso.opt.i-witness.graphml [2020-12-23 13:37:20,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:37:20,740 INFO L168 Benchmark]: Toolchain (without parser) took 7063.05 ms. Allocated memory was 164.6 MB in the beginning and 254.8 MB in the end (delta: 90.2 MB). Free memory was 137.9 MB in the beginning and 219.0 MB in the end (delta: -81.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:20,742 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:37:20,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.90 ms. Allocated memory is still 164.6 MB. Free memory was 137.9 MB in the beginning and 107.0 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:20,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.08 ms. Allocated memory is still 164.6 MB. Free memory was 107.0 MB in the beginning and 104.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:20,749 INFO L168 Benchmark]: Boogie Preprocessor took 32.65 ms. Allocated memory is still 164.6 MB. Free memory was 104.9 MB in the beginning and 103.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:20,750 INFO L168 Benchmark]: RCFGBuilder took 506.86 ms. Allocated memory is still 164.6 MB. Free memory was 103.3 MB in the beginning and 80.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:20,750 INFO L168 Benchmark]: TraceAbstraction took 5677.81 ms. Allocated memory was 164.6 MB in the beginning and 254.8 MB in the end (delta: 90.2 MB). Free memory was 80.3 MB in the beginning and 221.6 MB in the end (delta: -141.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:37:20,751 INFO L168 Benchmark]: Witness Printer took 122.36 ms. Allocated memory is still 254.8 MB. Free memory was 221.6 MB in the beginning and 219.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:37:20,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 663.90 ms. Allocated memory is still 164.6 MB. Free memory was 137.9 MB in the beginning and 107.0 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.08 ms. Allocated memory is still 164.6 MB. Free memory was 107.0 MB in the beginning and 104.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.65 ms. Allocated memory is still 164.6 MB. Free memory was 104.9 MB in the beginning and 103.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 506.86 ms. Allocated memory is still 164.6 MB. Free memory was 103.3 MB in the beginning and 80.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5677.81 ms. Allocated memory was 164.6 MB in the beginning and 254.8 MB in the end (delta: 90.2 MB). Free memory was 80.3 MB in the beginning and 221.6 MB in the end (delta: -141.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 122.36 ms. Allocated memory is still 254.8 MB. Free memory was 221.6 MB in the beginning and 219.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 743 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 190 SDtfs, 192 SDslu, 278 SDs, 0 SdLazy, 127 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 262 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 5291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...