/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/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:32:40,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:32:40,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:32:40,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:32:40,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:32:40,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:32:40,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:32:40,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:32:40,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:32:40,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:32:40,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:32:40,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:32:40,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:32:40,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:32:40,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:32:40,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:32:40,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:32:40,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:32:40,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:32:40,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:32:40,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:32:40,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:32:40,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:32:40,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:32:40,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:32:40,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:32:40,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:32:40,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:32:40,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:32:40,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:32:40,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:32:40,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:32:40,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:32:40,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:32:40,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:32:40,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:32:40,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:32:40,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:32:40,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:32:40,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:32:40,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:32:40,416 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:32:40,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:32:40,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:32:40,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:32:40,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:32:40,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:32:40,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:32:40,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:32:40,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:32:40,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:32:40,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:32:40,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:32:40,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:32:40,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:32:40,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:32:40,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:32:40,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:32:40,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:32:40,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:32:40,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:32:40,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:32:40,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:32:40,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:32:40,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:32:40,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:32:40,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:32:40,906 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:32:40,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2021-01-06 23:32:41,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0097d0062/994d951598bd47aba323e60f12c0b002/FLAGc5a69250c [2021-01-06 23:32:41,819 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:32:41,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2021-01-06 23:32:41,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0097d0062/994d951598bd47aba323e60f12c0b002/FLAGc5a69250c [2021-01-06 23:32:42,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0097d0062/994d951598bd47aba323e60f12c0b002 [2021-01-06 23:32:42,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:32:42,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:32:42,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:32:42,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:32:42,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:32:42,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a38c13a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42, skipping insertion in model container [2021-01-06 23:32:42,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:32:42,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:32:42,314 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/safe009_tso.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[~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[~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:32:42,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:32:42,545 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:32:42,560 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:32:42,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:32:42,730 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:32:42,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42 WrapperNode [2021-01-06 23:32:42,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:32:42,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:32:42,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:32:42,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:32:42,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:32:42,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:32:42,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:32:42,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:32:42,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (1/1) ... [2021-01-06 23:32:42,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:32:42,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:32:42,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:32:42,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:32:42,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (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 [2021-01-06 23:32:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:32:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:32:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:32:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:32:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:32:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:32:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:32:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:32:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:32:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:32:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:32:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:32:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:32:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:32:42,968 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:32:43,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:32:43,329 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:32:43,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:43 BoogieIcfgContainer [2021-01-06 23:32:43,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:32:43,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:32:43,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:32:43,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:32:43,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:32:42" (1/3) ... [2021-01-06 23:32:43,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a164c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:43, skipping insertion in model container [2021-01-06 23:32:43,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:42" (2/3) ... [2021-01-06 23:32:43,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a164c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:43, skipping insertion in model container [2021-01-06 23:32:43,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:43" (3/3) ... [2021-01-06 23:32:43,342 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-01-06 23:32:43,349 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:32:43,349 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:32:43,354 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:32:43,355 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:32:43,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,431 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,432 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,437 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,439 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,440 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,440 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,441 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,441 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,441 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,446 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,447 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,447 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,448 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,448 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,467 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,468 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,468 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,476 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,476 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:43,482 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:32:43,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:32:43,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:32:43,545 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:32:43,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:32:43,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:32:43,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:32:43,546 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:32:43,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:32:43,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:32:43,564 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:32:43,567 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-01-06 23:32:43,570 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-01-06 23:32:43,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-01-06 23:32:43,620 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-01-06 23:32:43,620 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:32:43,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-01-06 23:32:43,628 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2021-01-06 23:32:45,944 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-06 23:32:46,210 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:32:46,513 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:32:46,617 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-01-06 23:32:46,704 INFO L131 LiptonReduction]: Checked pairs total: 2044 [2021-01-06 23:32:46,704 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-01-06 23:32:46,711 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-01-06 23:32:46,739 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2021-01-06 23:32:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2021-01-06 23:32:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:32:46,749 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:46,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:46,751 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:46,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:46,757 INFO L82 PathProgramCache]: Analyzing trace with hash 622846231, now seen corresponding path program 1 times [2021-01-06 23:32:46,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:46,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389499084] [2021-01-06 23:32:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:46,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389499084] [2021-01-06 23:32:46,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:46,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:32:46,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690364065] [2021-01-06 23:32:46,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:32:46,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:32:46,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:32:46,991 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2021-01-06 23:32:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:47,045 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2021-01-06 23:32:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:32:47,048 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:32:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:47,072 INFO L225 Difference]: With dead ends: 282 [2021-01-06 23:32:47,072 INFO L226 Difference]: Without dead ends: 234 [2021-01-06 23:32:47,074 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 [2021-01-06 23:32:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-01-06 23:32:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-01-06 23:32:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-01-06 23:32:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2021-01-06 23:32:47,155 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2021-01-06 23:32:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:47,156 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2021-01-06 23:32:47,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:32:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2021-01-06 23:32:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:32:47,158 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:32:47,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2128318799, now seen corresponding path program 1 times [2021-01-06 23:32:47,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526713154] [2021-01-06 23:32:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:47,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526713154] [2021-01-06 23:32:47,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:47,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:32:47,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382755505] [2021-01-06 23:32:47,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:32:47,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:47,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:32:47,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:32:47,342 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 4 states. [2021-01-06 23:32:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:47,401 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2021-01-06 23:32:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:47,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:32:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:47,409 INFO L225 Difference]: With dead ends: 402 [2021-01-06 23:32:47,409 INFO L226 Difference]: Without dead ends: 308 [2021-01-06 23:32:47,410 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 [2021-01-06 23:32:47,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-01-06 23:32:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-01-06 23:32:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-01-06 23:32:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2021-01-06 23:32:47,462 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2021-01-06 23:32:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:47,462 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2021-01-06 23:32:47,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:32:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2021-01-06 23:32:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:32:47,467 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:32:47,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,468 INFO L82 PathProgramCache]: Analyzing trace with hash 503221834, now seen corresponding path program 1 times [2021-01-06 23:32:47,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111846438] [2021-01-06 23:32:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:47,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111846438] [2021-01-06 23:32:47,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:47,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:47,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187806486] [2021-01-06 23:32:47,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:47,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:47,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:47,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:47,626 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand 5 states. [2021-01-06 23:32:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:47,687 INFO L93 Difference]: Finished difference Result 345 states and 864 transitions. [2021-01-06 23:32:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:47,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:32:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:47,691 INFO L225 Difference]: With dead ends: 345 [2021-01-06 23:32:47,691 INFO L226 Difference]: Without dead ends: 278 [2021-01-06 23:32:47,692 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 [2021-01-06 23:32:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-01-06 23:32:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2021-01-06 23:32:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-01-06 23:32:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 648 transitions. [2021-01-06 23:32:47,706 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 648 transitions. Word has length 10 [2021-01-06 23:32:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:47,707 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 648 transitions. [2021-01-06 23:32:47,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 648 transitions. [2021-01-06 23:32:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:32:47,709 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:32:47,709 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1553300282, now seen corresponding path program 1 times [2021-01-06 23:32:47,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912176488] [2021-01-06 23:32:47,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:47,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912176488] [2021-01-06 23:32:47,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:47,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:47,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599993378] [2021-01-06 23:32:47,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:47,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:47,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:47,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:47,852 INFO L87 Difference]: Start difference. First operand 246 states and 648 transitions. Second operand 5 states. [2021-01-06 23:32:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:47,906 INFO L93 Difference]: Finished difference Result 298 states and 740 transitions. [2021-01-06 23:32:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:47,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:32:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:47,909 INFO L225 Difference]: With dead ends: 298 [2021-01-06 23:32:47,910 INFO L226 Difference]: Without dead ends: 254 [2021-01-06 23:32:47,910 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 [2021-01-06 23:32:47,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-01-06 23:32:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2021-01-06 23:32:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-06 23:32:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 576 transitions. [2021-01-06 23:32:47,920 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 576 transitions. Word has length 10 [2021-01-06 23:32:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:47,921 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 576 transitions. [2021-01-06 23:32:47,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 576 transitions. [2021-01-06 23:32:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:32:47,923 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:47,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:47,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:32:47,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:47,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1580065377, now seen corresponding path program 1 times [2021-01-06 23:32:47,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:47,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647533373] [2021-01-06 23:32:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:47,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647533373] [2021-01-06 23:32:47,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:47,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:47,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213305990] [2021-01-06 23:32:47,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:47,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:47,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:47,991 INFO L87 Difference]: Start difference. First operand 222 states and 576 transitions. Second operand 5 states. [2021-01-06 23:32:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,035 INFO L93 Difference]: Finished difference Result 266 states and 662 transitions. [2021-01-06 23:32:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:48,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 23:32:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,039 INFO L225 Difference]: With dead ends: 266 [2021-01-06 23:32:48,039 INFO L226 Difference]: Without dead ends: 242 [2021-01-06 23:32:48,039 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 [2021-01-06 23:32:48,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-01-06 23:32:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2021-01-06 23:32:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-01-06 23:32:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 538 transitions. [2021-01-06 23:32:48,051 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 538 transitions. Word has length 11 [2021-01-06 23:32:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,051 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 538 transitions. [2021-01-06 23:32:48,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 538 transitions. [2021-01-06 23:32:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:32:48,056 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:32:48,056 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1430850506, now seen corresponding path program 1 times [2021-01-06 23:32:48,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593315678] [2021-01-06 23:32:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:48,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593315678] [2021-01-06 23:32:48,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:48,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410024986] [2021-01-06 23:32:48,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:32:48,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:32:48,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:32:48,179 INFO L87 Difference]: Start difference. First operand 210 states and 538 transitions. Second operand 6 states. [2021-01-06 23:32:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,228 INFO L93 Difference]: Finished difference Result 300 states and 745 transitions. [2021-01-06 23:32:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:32:48,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 23:32:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,231 INFO L225 Difference]: With dead ends: 300 [2021-01-06 23:32:48,231 INFO L226 Difference]: Without dead ends: 180 [2021-01-06 23:32:48,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:32:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-01-06 23:32:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2021-01-06 23:32:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-01-06 23:32:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 390 transitions. [2021-01-06 23:32:48,241 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 390 transitions. Word has length 12 [2021-01-06 23:32:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,242 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 390 transitions. [2021-01-06 23:32:48,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:32:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 390 transitions. [2021-01-06 23:32:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:32:48,243 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:32:48,243 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1400741867, now seen corresponding path program 1 times [2021-01-06 23:32:48,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964861703] [2021-01-06 23:32:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:48,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964861703] [2021-01-06 23:32:48,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:48,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381020959] [2021-01-06 23:32:48,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,314 INFO L87 Difference]: Start difference. First operand 156 states and 390 transitions. Second operand 5 states. [2021-01-06 23:32:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,364 INFO L93 Difference]: Finished difference Result 254 states and 611 transitions. [2021-01-06 23:32:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:48,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:32:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,366 INFO L225 Difference]: With dead ends: 254 [2021-01-06 23:32:48,366 INFO L226 Difference]: Without dead ends: 144 [2021-01-06 23:32:48,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:32:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-01-06 23:32:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2021-01-06 23:32:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-06 23:32:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 282 transitions. [2021-01-06 23:32:48,372 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 282 transitions. Word has length 12 [2021-01-06 23:32:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,373 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 282 transitions. [2021-01-06 23:32:48,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,373 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 282 transitions. [2021-01-06 23:32:48,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:32:48,373 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:32:48,374 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1013965314, now seen corresponding path program 2 times [2021-01-06 23:32:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877789305] [2021-01-06 23:32:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:48,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877789305] [2021-01-06 23:32:48,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:48,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81023482] [2021-01-06 23:32:48,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,448 INFO L87 Difference]: Start difference. First operand 120 states and 282 transitions. Second operand 5 states. [2021-01-06 23:32:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,491 INFO L93 Difference]: Finished difference Result 134 states and 299 transitions. [2021-01-06 23:32:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:32:48,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:32:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,496 INFO L225 Difference]: With dead ends: 134 [2021-01-06 23:32:48,496 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 23:32:48,497 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 [2021-01-06 23:32:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 23:32:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-01-06 23:32:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 23:32:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2021-01-06 23:32:48,500 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 12 [2021-01-06 23:32:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,500 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2021-01-06 23:32:48,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2021-01-06 23:32:48,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:32:48,501 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:32:48,502 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,502 INFO L82 PathProgramCache]: Analyzing trace with hash 776645246, now seen corresponding path program 1 times [2021-01-06 23:32:48,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360834413] [2021-01-06 23:32:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:48,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360834413] [2021-01-06 23:32:48,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426973228] [2021-01-06 23:32:48,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:32:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:32:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:32:48,609 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 4 states. [2021-01-06 23:32:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,631 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2021-01-06 23:32:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:32:48,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 23:32:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,633 INFO L225 Difference]: With dead ends: 58 [2021-01-06 23:32:48,633 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 23:32:48,634 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 [2021-01-06 23:32:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 23:32:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-01-06 23:32:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 23:32:48,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2021-01-06 23:32:48,636 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2021-01-06 23:32:48,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,636 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2021-01-06 23:32:48,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:32:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2021-01-06 23:32:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:32:48,637 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:32:48,637 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,638 INFO L82 PathProgramCache]: Analyzing trace with hash -809970744, now seen corresponding path program 1 times [2021-01-06 23:32:48,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947793129] [2021-01-06 23:32:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:48,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947793129] [2021-01-06 23:32:48,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:48,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762169073] [2021-01-06 23:32:48,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:48,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:48,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:48,689 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand 5 states. [2021-01-06 23:32:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,729 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-01-06 23:32:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:48,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 23:32:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,731 INFO L225 Difference]: With dead ends: 35 [2021-01-06 23:32:48,731 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 23:32:48,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:32:48,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 23:32:48,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-06 23:32:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 23:32:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-01-06 23:32:48,733 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2021-01-06 23:32:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,733 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-01-06 23:32:48,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-01-06 23:32:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:32:48,734 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:48,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:48,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:32:48,734 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:48,735 INFO L82 PathProgramCache]: Analyzing trace with hash -145595207, now seen corresponding path program 1 times [2021-01-06 23:32:48,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:48,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592986498] [2021-01-06 23:32:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:32:48,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592986498] [2021-01-06 23:32:48,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:48,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:32:48,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390177050] [2021-01-06 23:32:48,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:32:48,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:48,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:32:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:32:48,842 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2021-01-06 23:32:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:48,882 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-01-06 23:32:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:48,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 23:32:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:48,884 INFO L225 Difference]: With dead ends: 21 [2021-01-06 23:32:48,884 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:32:48,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:32:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:32:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:32:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:32:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:32:48,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-01-06 23:32:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:48,886 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:32:48,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:32:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:32:48,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:32:48,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:32:48,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:32:48 BasicIcfg [2021-01-06 23:32:48,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:32:48,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:32:48,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:32:48,892 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:32:48,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:43" (3/4) ... [2021-01-06 23:32:48,898 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:32:48,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:32:48,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:32:48,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:32:48,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:32:48,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:32:48,914 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:32:48,914 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:32:48,974 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe009_tso.oepc.i-witness.graphml [2021-01-06 23:32:48,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:32:48,975 INFO L168 Benchmark]: Toolchain (without parser) took 6936.00 ms. Allocated memory was 157.3 MB in the beginning and 228.6 MB in the end (delta: 71.3 MB). Free memory was 131.9 MB in the beginning and 192.9 MB in the end (delta: -61.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:48,980 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:32:48,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.36 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 133.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:48,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.22 ms. Allocated memory is still 157.3 MB. Free memory was 133.0 MB in the beginning and 131.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:48,982 INFO L168 Benchmark]: Boogie Preprocessor took 28.77 ms. Allocated memory is still 157.3 MB. Free memory was 131.0 MB in the beginning and 129.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:48,986 INFO L168 Benchmark]: RCFGBuilder took 472.47 ms. Allocated memory is still 157.3 MB. Free memory was 129.8 MB in the beginning and 107.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:48,986 INFO L168 Benchmark]: TraceAbstraction took 5557.30 ms. Allocated memory was 157.3 MB in the beginning and 228.6 MB in the end (delta: 71.3 MB). Free memory was 107.4 MB in the beginning and 195.5 MB in the end (delta: -88.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:32:48,987 INFO L168 Benchmark]: Witness Printer took 82.19 ms. Allocated memory is still 228.6 MB. Free memory was 195.5 MB in the beginning and 192.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:48,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 690.36 ms. Allocated memory is still 157.3 MB. Free memory was 131.7 MB in the beginning and 133.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 96.22 ms. Allocated memory is still 157.3 MB. Free memory was 133.0 MB in the beginning and 131.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.77 ms. Allocated memory is still 157.3 MB. Free memory was 131.0 MB in the beginning and 129.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 472.47 ms. Allocated memory is still 157.3 MB. Free memory was 129.8 MB in the beginning and 107.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5557.30 ms. Allocated memory was 157.3 MB in the beginning and 228.6 MB in the end (delta: 71.3 MB). Free memory was 107.4 MB in the beginning and 195.5 MB in the end (delta: -88.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 82.19 ms. Allocated memory is still 228.6 MB. Free memory was 195.5 MB in the beginning and 192.9 MB in the end (delta: 2.6 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 799 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 81 PlacesBefore, 31 PlacesAfterwards, 73 TransitionsBefore, 22 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2044 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 236 SDtfs, 261 SDslu, 362 SDs, 0 SdLazy, 136 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred 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, 188 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5242 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...