/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-dcfa08f [2020-12-23 13:39:49,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:39:49,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:39:49,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:39:49,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:39:49,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:39:49,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:39:49,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:39:49,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:39:49,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:39:49,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:39:49,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:39:49,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:39:49,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:39:49,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:39:49,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:39:49,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:39:49,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:39:49,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:39:49,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:39:49,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:39:49,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:39:49,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:39:49,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:39:49,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:39:49,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:39:49,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:39:49,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:39:49,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:39:49,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:39:49,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:39:49,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:39:49,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:39:49,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:39:49,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:39:49,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:39:49,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:39:49,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:39:49,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:39:49,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:39:49,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:39:49,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:39:49,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:39:49,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:39:49,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:39:49,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:39:49,973 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:39:49,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:39:49,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:39:49,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:39:49,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:39:49,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:39:49,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:39:49,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:39:49,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:39:49,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:39:49,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:39:49,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:39:49,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:39:49,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:39:49,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:39:49,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:39:49,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:39:49,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:39:49,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:39:49,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:39:49,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:39:49,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:39:50,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:39:50,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:39:50,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:39:50,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:39:50,421 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:39:50,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2020-12-23 13:39:50,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d6005bc54/2cdd3623b19942b08fb7c3c6476b5239/FLAG376035595 [2020-12-23 13:39:51,393 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:39:51,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i [2020-12-23 13:39:51,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d6005bc54/2cdd3623b19942b08fb7c3c6476b5239/FLAG376035595 [2020-12-23 13:39:51,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d6005bc54/2cdd3623b19942b08fb7c3c6476b5239 [2020-12-23 13:39:51,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:39:51,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:39:51,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:51,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:39:51,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:39:51,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:51" (1/1) ... [2020-12-23 13:39:51,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fad348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:51, skipping insertion in model container [2020-12-23 13:39:51,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:51" (1/1) ... [2020-12-23 13:39:51,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:39:51,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:39:51,898 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$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:52,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:52,212 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:39:52,233 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:52,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:52,465 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:39:52,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52 WrapperNode [2020-12-23 13:39:52,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:52,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:52,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:39:52,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:39:52,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:52,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:39:52,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:39:52,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:39:52,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... [2020-12-23 13:39:52,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:39:52,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:39:52,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:39:52,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:39:52,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:39:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:39:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:39:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:39:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:39:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:39:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:39:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:39:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:39:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:39:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:39:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:39:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:39:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:39:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:39:52,747 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:39:53,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:39:53,251 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:39:53,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:53 BoogieIcfgContainer [2020-12-23 13:39:53,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:39:53,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:39:53,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:39:53,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:39:53,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:39:51" (1/3) ... [2020-12-23 13:39:53,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e861691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:53, skipping insertion in model container [2020-12-23 13:39:53,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:52" (2/3) ... [2020-12-23 13:39:53,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e861691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:53, skipping insertion in model container [2020-12-23 13:39:53,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:53" (3/3) ... [2020-12-23 13:39:53,266 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2020-12-23 13:39:53,273 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:39:53,273 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:39:53,279 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:39:53,280 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:39:53,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,325 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,325 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,325 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,325 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,327 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,328 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,328 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,329 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,329 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,330 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,330 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,331 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,331 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,331 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,331 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,332 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,342 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,346 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:53,349 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:39:53,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:39:53,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:39:53,395 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:39:53,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:39:53,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:39:53,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:39:53,396 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:39:53,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:39:53,396 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:39:53,410 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:39:53,413 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:53,416 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:53,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:53,465 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-23 13:39:53,465 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:39:53,469 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. [2020-12-23 13:39:53,472 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2020-12-23 13:39:56,131 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:39:56,243 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 13:39:56,450 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:39:56,557 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 13:39:56,649 INFO L131 LiptonReduction]: Checked pairs total: 2044 [2020-12-23 13:39:56,649 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:39:56,657 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-23 13:39:56,684 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-12-23 13:39:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-12-23 13:39:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:39:56,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:56,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:56,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 622846231, now seen corresponding path program 1 times [2020-12-23 13:39:56,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:56,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255659447] [2020-12-23 13:39:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:56,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255659447] [2020-12-23 13:39:56,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:56,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:56,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976916469] [2020-12-23 13:39:56,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:39:56,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:56,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:39:56,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:39:56,934 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-12-23 13:39:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:56,986 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-23 13:39:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:39:56,988 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:39:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:57,013 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:39:57,014 INFO L226 Difference]: Without dead ends: 234 [2020-12-23 13:39:57,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:39:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-23 13:39:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-12-23 13:39:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-23 13:39:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-12-23 13:39:57,089 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-12-23 13:39:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:57,091 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-12-23 13:39:57,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:39:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-12-23 13:39:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:39:57,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:57,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:57,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:39:57,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:57,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:57,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2128318799, now seen corresponding path program 1 times [2020-12-23 13:39:57,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:57,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31072207] [2020-12-23 13:39:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:57,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31072207] [2020-12-23 13:39:57,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:57,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:57,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748294980] [2020-12-23 13:39:57,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:57,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:57,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:57,242 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 4 states. [2020-12-23 13:39:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:57,309 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2020-12-23 13:39:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:57,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:39:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:57,316 INFO L225 Difference]: With dead ends: 402 [2020-12-23 13:39:57,316 INFO L226 Difference]: Without dead ends: 308 [2020-12-23 13:39:57,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-23 13:39:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2020-12-23 13:39:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-23 13:39:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2020-12-23 13:39:57,371 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2020-12-23 13:39:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:57,372 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2020-12-23 13:39:57,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2020-12-23 13:39:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:39:57,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:57,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:57,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:39:57,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:57,381 INFO L82 PathProgramCache]: Analyzing trace with hash 503221834, now seen corresponding path program 1 times [2020-12-23 13:39:57,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:57,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821135919] [2020-12-23 13:39:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:57,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821135919] [2020-12-23 13:39:57,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:57,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:57,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18004789] [2020-12-23 13:39:57,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:57,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:57,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:57,551 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand 5 states. [2020-12-23 13:39:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:57,623 INFO L93 Difference]: Finished difference Result 345 states and 864 transitions. [2020-12-23 13:39:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:57,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:39:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:57,626 INFO L225 Difference]: With dead ends: 345 [2020-12-23 13:39:57,627 INFO L226 Difference]: Without dead ends: 278 [2020-12-23 13:39:57,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-12-23 13:39:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2020-12-23 13:39:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-12-23 13:39:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 648 transitions. [2020-12-23 13:39:57,642 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 648 transitions. Word has length 10 [2020-12-23 13:39:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:57,643 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 648 transitions. [2020-12-23 13:39:57,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 648 transitions. [2020-12-23 13:39:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:39:57,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:57,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:57,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:39:57,645 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:57,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:57,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1553300282, now seen corresponding path program 1 times [2020-12-23 13:39:57,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:57,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305005945] [2020-12-23 13:39:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:57,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305005945] [2020-12-23 13:39:57,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:57,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:57,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830338674] [2020-12-23 13:39:57,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:57,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:57,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:57,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:57,719 INFO L87 Difference]: Start difference. First operand 246 states and 648 transitions. Second operand 5 states. [2020-12-23 13:39:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:57,772 INFO L93 Difference]: Finished difference Result 298 states and 740 transitions. [2020-12-23 13:39:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:57,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:39:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:57,775 INFO L225 Difference]: With dead ends: 298 [2020-12-23 13:39:57,775 INFO L226 Difference]: Without dead ends: 254 [2020-12-23 13:39:57,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-23 13:39:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2020-12-23 13:39:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-23 13:39:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 576 transitions. [2020-12-23 13:39:57,787 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 576 transitions. Word has length 10 [2020-12-23 13:39:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:57,787 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 576 transitions. [2020-12-23 13:39:57,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 576 transitions. [2020-12-23 13:39:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:39:57,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:57,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:57,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:39:57,790 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:57,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1580065377, now seen corresponding path program 1 times [2020-12-23 13:39:57,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:57,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095098668] [2020-12-23 13:39:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:57,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095098668] [2020-12-23 13:39:57,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:57,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:57,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951356724] [2020-12-23 13:39:57,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:57,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:57,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:57,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:57,886 INFO L87 Difference]: Start difference. First operand 222 states and 576 transitions. Second operand 5 states. [2020-12-23 13:39:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:57,931 INFO L93 Difference]: Finished difference Result 266 states and 662 transitions. [2020-12-23 13:39:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:57,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:39:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:57,935 INFO L225 Difference]: With dead ends: 266 [2020-12-23 13:39:57,935 INFO L226 Difference]: Without dead ends: 242 [2020-12-23 13:39:57,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-23 13:39:57,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2020-12-23 13:39:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-23 13:39:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 538 transitions. [2020-12-23 13:39:57,944 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 538 transitions. Word has length 11 [2020-12-23 13:39:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:57,944 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 538 transitions. [2020-12-23 13:39:57,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 538 transitions. [2020-12-23 13:39:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:39:57,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:57,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:57,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:39:57,950 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:57,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1430850506, now seen corresponding path program 1 times [2020-12-23 13:39:57,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:57,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817644633] [2020-12-23 13:39:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:58,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817644633] [2020-12-23 13:39:58,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:58,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:58,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447410375] [2020-12-23 13:39:58,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:39:58,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:39:58,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:39:58,069 INFO L87 Difference]: Start difference. First operand 210 states and 538 transitions. Second operand 6 states. [2020-12-23 13:39:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:58,111 INFO L93 Difference]: Finished difference Result 300 states and 745 transitions. [2020-12-23 13:39:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:58,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 13:39:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:58,113 INFO L225 Difference]: With dead ends: 300 [2020-12-23 13:39:58,113 INFO L226 Difference]: Without dead ends: 180 [2020-12-23 13:39:58,113 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 [2020-12-23 13:39:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-23 13:39:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2020-12-23 13:39:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-23 13:39:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 390 transitions. [2020-12-23 13:39:58,120 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 390 transitions. Word has length 12 [2020-12-23 13:39:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:58,120 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 390 transitions. [2020-12-23 13:39:58,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:39:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 390 transitions. [2020-12-23 13:39:58,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:39:58,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:58,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:58,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:39:58,121 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:58,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1400741867, now seen corresponding path program 1 times [2020-12-23 13:39:58,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:58,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015010110] [2020-12-23 13:39:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:58,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015010110] [2020-12-23 13:39:58,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:58,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:58,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000988343] [2020-12-23 13:39:58,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:58,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:58,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:58,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:58,181 INFO L87 Difference]: Start difference. First operand 156 states and 390 transitions. Second operand 5 states. [2020-12-23 13:39:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:58,231 INFO L93 Difference]: Finished difference Result 254 states and 611 transitions. [2020-12-23 13:39:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:58,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:39:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:58,235 INFO L225 Difference]: With dead ends: 254 [2020-12-23 13:39:58,235 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 13:39:58,236 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 [2020-12-23 13:39:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 13:39:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2020-12-23 13:39:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-23 13:39:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 282 transitions. [2020-12-23 13:39:58,246 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 282 transitions. Word has length 12 [2020-12-23 13:39:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:58,246 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 282 transitions. [2020-12-23 13:39:58,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 282 transitions. [2020-12-23 13:39:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:39:58,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:58,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:58,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:39:58,248 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:58,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1013965314, now seen corresponding path program 2 times [2020-12-23 13:39:58,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:58,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667279592] [2020-12-23 13:39:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:58,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667279592] [2020-12-23 13:39:58,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:58,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:58,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639431031] [2020-12-23 13:39:58,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:58,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:58,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:58,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:58,342 INFO L87 Difference]: Start difference. First operand 120 states and 282 transitions. Second operand 5 states. [2020-12-23 13:39:58,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:58,383 INFO L93 Difference]: Finished difference Result 134 states and 299 transitions. [2020-12-23 13:39:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:58,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:39:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:58,388 INFO L225 Difference]: With dead ends: 134 [2020-12-23 13:39:58,388 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 13:39:58,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:39:58,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 13:39:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-23 13:39:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 13:39:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2020-12-23 13:39:58,393 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 12 [2020-12-23 13:39:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:58,393 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2020-12-23 13:39:58,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:58,394 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2020-12-23 13:39:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:39:58,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:58,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:58,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:39:58,395 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash 776645246, now seen corresponding path program 1 times [2020-12-23 13:39:58,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:58,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469965081] [2020-12-23 13:39:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:58,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469965081] [2020-12-23 13:39:58,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:58,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:58,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279157529] [2020-12-23 13:39:58,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:58,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:58,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:58,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:58,532 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 4 states. [2020-12-23 13:39:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:58,562 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2020-12-23 13:39:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:39:58,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:39:58,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:58,564 INFO L225 Difference]: With dead ends: 58 [2020-12-23 13:39:58,564 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 13:39:58,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 13:39:58,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-23 13:39:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 13:39:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2020-12-23 13:39:58,568 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2020-12-23 13:39:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:58,569 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2020-12-23 13:39:58,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2020-12-23 13:39:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:39:58,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:58,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:58,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:39:58,570 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:58,571 INFO L82 PathProgramCache]: Analyzing trace with hash -809970744, now seen corresponding path program 1 times [2020-12-23 13:39:58,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:58,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900508028] [2020-12-23 13:39:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:58,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900508028] [2020-12-23 13:39:58,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:58,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:58,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795798872] [2020-12-23 13:39:58,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:58,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:58,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:58,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:58,675 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand 5 states. [2020-12-23 13:39:58,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:58,714 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-12-23 13:39:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:58,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:39:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:58,717 INFO L225 Difference]: With dead ends: 35 [2020-12-23 13:39:58,717 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 13:39:58,717 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 [2020-12-23 13:39:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 13:39:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 13:39:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 13:39:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-12-23 13:39:58,719 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2020-12-23 13:39:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:58,720 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-12-23 13:39:58,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:58,720 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-12-23 13:39:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:39:58,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:58,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:58,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:39:58,721 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:58,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:58,722 INFO L82 PathProgramCache]: Analyzing trace with hash -145595207, now seen corresponding path program 1 times [2020-12-23 13:39:58,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:58,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004132382] [2020-12-23 13:39:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:58,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004132382] [2020-12-23 13:39:58,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:58,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:39:58,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6385211] [2020-12-23 13:39:58,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:39:58,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:58,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:39:58,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:39:58,823 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2020-12-23 13:39:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:58,863 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-12-23 13:39:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:58,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 13:39:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:58,865 INFO L225 Difference]: With dead ends: 21 [2020-12-23 13:39:58,865 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:39:58,867 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 [2020-12-23 13:39:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:39:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:39:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:39:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:39:58,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-23 13:39:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:58,868 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:39:58,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:39:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:39:58,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:39:58,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:39:58,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:39:58 BasicIcfg [2020-12-23 13:39:58,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:39:58,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:39:58,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:39:58,874 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:39:58,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:53" (3/4) ... [2020-12-23 13:39:58,879 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:39:58,887 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:39:58,887 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:39:58,887 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:39:58,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:39:58,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:39:58,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:58,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:58,971 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe009_tso.oepc.i-witness.graphml [2020-12-23 13:39:58,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:39:58,973 INFO L168 Benchmark]: Toolchain (without parser) took 7360.86 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 124.7 MB in the beginning and 156.9 MB in the end (delta: -32.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:58,976 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:39:58,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.13 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 126.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:58,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 124.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:58,980 INFO L168 Benchmark]: Boogie Preprocessor took 64.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 122.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:58,981 INFO L168 Benchmark]: RCFGBuilder took 630.99 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 101.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:58,982 INFO L168 Benchmark]: TraceAbstraction took 5615.45 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.5 MB in the beginning and 159.6 MB in the end (delta: -59.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:58,982 INFO L168 Benchmark]: Witness Printer took 97.30 ms. Allocated memory is still 218.1 MB. Free memory was 159.6 MB in the beginning and 156.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:58,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 852.13 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 126.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 88.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 124.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 122.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 630.99 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 101.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5615.45 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.5 MB in the beginning and 159.6 MB in the end (delta: -59.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. * Witness Printer took 97.30 ms. Allocated memory is still 218.1 MB. Free memory was 159.6 MB in the beginning and 156.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 799 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.2s, 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: 5.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, 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, 0.7s 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...