/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:38:52,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:38:52,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:38:52,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:38:52,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:38:52,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:38:52,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:38:52,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:38:52,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:38:52,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:38:52,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:38:52,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:38:52,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:38:52,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:38:52,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:38:52,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:38:52,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:38:52,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:38:52,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:38:52,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:38:52,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:38:52,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:38:52,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:38:52,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:38:52,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:38:52,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:38:53,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:38:53,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:38:53,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:38:53,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:38:53,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:38:53,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:38:53,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:38:53,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:38:53,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:38:53,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:38:53,034 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 13:38:53,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:38:53,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:38:53,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:38:53,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:38:53,092 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:38:53,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:38:53,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:38:53,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:38:53,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:38:53,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:38:53,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:38:53,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:38:53,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:38:53,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:38:53,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:38:53,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:38:53,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:38:53,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:38:53,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:38:53,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:38:53,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:38:53,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:38:53,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:38:53,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:38:53,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:38:53,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:38:53,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:38:53,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:38:53,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:38:53,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:38:53,589 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:38:53,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i [2020-12-23 13:38:53,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7c6efe7ff/2f04be46b54242ef84b39cfc3f98deb4/FLAGf59e0965c [2020-12-23 13:38:54,437 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:38:54,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i [2020-12-23 13:38:54,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7c6efe7ff/2f04be46b54242ef84b39cfc3f98deb4/FLAGf59e0965c [2020-12-23 13:38:54,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7c6efe7ff/2f04be46b54242ef84b39cfc3f98deb4 [2020-12-23 13:38:54,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:38:54,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:38:54,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:38:54,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:38:54,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:38:54,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:38:54" (1/1) ... [2020-12-23 13:38:54,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191af324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:54, skipping insertion in model container [2020-12-23 13:38:54,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:38:54" (1/1) ... [2020-12-23 13:38:54,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:38:54,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:38:54,961 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/safe005_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:38:55,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:38:55,188 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:38:55,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:38:55,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:38:55,350 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:38:55,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55 WrapperNode [2020-12-23 13:38:55,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:38:55,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:38:55,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:38:55,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:38:55,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:38:55,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:38:55,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:38:55,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:38:55,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (1/1) ... [2020-12-23 13:38:55,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:38:55,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:38:55,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:38:55,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:38:55,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (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 13:38:55,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:38:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:38:55,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:38:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:38:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:38:55,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:38:55,543 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:38:55,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:38:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:38:55,546 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:38:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:38:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:38:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:38:55,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:38:55,552 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 13:38:56,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:38:56,047 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:38:56,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:38:56 BoogieIcfgContainer [2020-12-23 13:38:56,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:38:56,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:38:56,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:38:56,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:38:56,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:38:54" (1/3) ... [2020-12-23 13:38:56,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485cd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:38:56, skipping insertion in model container [2020-12-23 13:38:56,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:55" (2/3) ... [2020-12-23 13:38:56,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485cd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:38:56, skipping insertion in model container [2020-12-23 13:38:56,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:38:56" (3/3) ... [2020-12-23 13:38:56,063 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-12-23 13:38:56,072 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:38:56,072 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:38:56,078 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:38:56,079 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:38:56,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,124 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,134 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,135 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,135 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,135 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,141 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,144 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,144 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,145 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:56,147 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:38:56,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:38:56,196 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:38:56,196 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:38:56,196 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:38:56,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:38:56,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:38:56,197 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:38:56,197 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:38:56,197 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:38:56,212 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:38:56,214 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:38:56,218 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:38:56,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:38:56,267 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:38:56,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:38:56,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:38:56,275 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:38:58,229 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 13:38:58,397 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 13:38:59,186 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:38:59,458 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:38:59,582 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2020-12-23 13:38:59,582 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-23 13:38:59,589 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-23 13:38:59,616 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-23 13:38:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-23 13:38:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:38:59,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:59,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:59,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:59,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2020-12-23 13:38:59,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:59,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262768292] [2020-12-23 13:38:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:59,966 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 13:38:59,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262768292] [2020-12-23 13:38:59,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:59,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:38:59,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849349195] [2020-12-23 13:38:59,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:38:59,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:59,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:38:59,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:38:59,992 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-23 13:39:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:00,057 INFO L93 Difference]: Finished difference Result 468 states and 1286 transitions. [2020-12-23 13:39:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:39:00,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 13:39:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:00,077 INFO L225 Difference]: With dead ends: 468 [2020-12-23 13:39:00,077 INFO L226 Difference]: Without dead ends: 292 [2020-12-23 13:39:00,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:39:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-23 13:39:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 250. [2020-12-23 13:39:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-23 13:39:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 640 transitions. [2020-12-23 13:39:00,181 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 640 transitions. Word has length 8 [2020-12-23 13:39:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:00,182 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 640 transitions. [2020-12-23 13:39:00,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:39:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 640 transitions. [2020-12-23 13:39:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:39:00,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:00,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:00,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:39:00,184 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:00,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:00,185 INFO L82 PathProgramCache]: Analyzing trace with hash 695081323, now seen corresponding path program 1 times [2020-12-23 13:39:00,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:00,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186627784] [2020-12-23 13:39:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:00,292 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 13:39:00,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186627784] [2020-12-23 13:39:00,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:00,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:39:00,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357317777] [2020-12-23 13:39:00,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:39:00,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:00,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:39:00,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:39:00,296 INFO L87 Difference]: Start difference. First operand 250 states and 640 transitions. Second operand 3 states. [2020-12-23 13:39:00,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:00,305 INFO L93 Difference]: Finished difference Result 226 states and 558 transitions. [2020-12-23 13:39:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:39:00,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 13:39:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:00,309 INFO L225 Difference]: With dead ends: 226 [2020-12-23 13:39:00,309 INFO L226 Difference]: Without dead ends: 174 [2020-12-23 13:39:00,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:39:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-23 13:39:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 158. [2020-12-23 13:39:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-23 13:39:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 398 transitions. [2020-12-23 13:39:00,329 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 398 transitions. Word has length 9 [2020-12-23 13:39:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:00,329 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 398 transitions. [2020-12-23 13:39:00,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:39:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 398 transitions. [2020-12-23 13:39:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:39:00,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:00,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:00,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:39:00,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2036864499, now seen corresponding path program 1 times [2020-12-23 13:39:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:00,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860308807] [2020-12-23 13:39:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:00,477 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 13:39:00,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860308807] [2020-12-23 13:39:00,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:00,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:00,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170829948] [2020-12-23 13:39:00,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:00,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:00,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:00,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:00,482 INFO L87 Difference]: Start difference. First operand 158 states and 398 transitions. Second operand 4 states. [2020-12-23 13:39:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:00,520 INFO L93 Difference]: Finished difference Result 230 states and 562 transitions. [2020-12-23 13:39:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:39:00,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:39:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:00,522 INFO L225 Difference]: With dead ends: 230 [2020-12-23 13:39:00,522 INFO L226 Difference]: Without dead ends: 134 [2020-12-23 13:39:00,523 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 13:39:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-23 13:39:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-23 13:39:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-23 13:39:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 318 transitions. [2020-12-23 13:39:00,534 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 318 transitions. Word has length 11 [2020-12-23 13:39:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:00,535 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 318 transitions. [2020-12-23 13:39:00,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 318 transitions. [2020-12-23 13:39:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:39:00,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:00,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:00,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:39:00,537 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:00,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:00,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1140467669, now seen corresponding path program 1 times [2020-12-23 13:39:00,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:00,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639774934] [2020-12-23 13:39:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:00,607 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 13:39:00,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639774934] [2020-12-23 13:39:00,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:00,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:00,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115120936] [2020-12-23 13:39:00,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:00,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:00,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:00,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:00,613 INFO L87 Difference]: Start difference. First operand 134 states and 318 transitions. Second operand 5 states. [2020-12-23 13:39:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:00,679 INFO L93 Difference]: Finished difference Result 218 states and 496 transitions. [2020-12-23 13:39:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:00,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:39:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:00,682 INFO L225 Difference]: With dead ends: 218 [2020-12-23 13:39:00,682 INFO L226 Difference]: Without dead ends: 126 [2020-12-23 13:39:00,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:00,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-23 13:39:00,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2020-12-23 13:39:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 13:39:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 216 transitions. [2020-12-23 13:39:00,727 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 216 transitions. Word has length 12 [2020-12-23 13:39:00,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:00,728 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 216 transitions. [2020-12-23 13:39:00,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 216 transitions. [2020-12-23 13:39:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:39:00,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:00,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:00,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:39:00,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:00,731 INFO L82 PathProgramCache]: Analyzing trace with hash -841103600, now seen corresponding path program 1 times [2020-12-23 13:39:00,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:00,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101764216] [2020-12-23 13:39:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:00,827 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 13:39:00,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101764216] [2020-12-23 13:39:00,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:00,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:00,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415805970] [2020-12-23 13:39:00,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:00,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:00,831 INFO L87 Difference]: Start difference. First operand 98 states and 216 transitions. Second operand 4 states. [2020-12-23 13:39:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:00,858 INFO L93 Difference]: Finished difference Result 116 states and 237 transitions. [2020-12-23 13:39:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:39:00,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:39:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:00,859 INFO L225 Difference]: With dead ends: 116 [2020-12-23 13:39:00,860 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 13:39:00,860 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 13:39:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 13:39:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-23 13:39:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 13:39:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 169 transitions. [2020-12-23 13:39:00,873 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 169 transitions. Word has length 13 [2020-12-23 13:39:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:00,873 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 169 transitions. [2020-12-23 13:39:00,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 169 transitions. [2020-12-23 13:39:00,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:39:00,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:00,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:00,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:39:00,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash -646597307, now seen corresponding path program 1 times [2020-12-23 13:39:00,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:00,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558333523] [2020-12-23 13:39:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:01,033 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 13:39:01,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558333523] [2020-12-23 13:39:01,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:01,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:01,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69043572] [2020-12-23 13:39:01,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:01,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:01,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:01,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:01,036 INFO L87 Difference]: Start difference. First operand 84 states and 169 transitions. Second operand 5 states. [2020-12-23 13:39:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:01,073 INFO L93 Difference]: Finished difference Result 86 states and 160 transitions. [2020-12-23 13:39:01,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:01,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:39:01,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:01,075 INFO L225 Difference]: With dead ends: 86 [2020-12-23 13:39:01,075 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 13:39:01,075 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 13:39:01,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 13:39:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 13:39:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 13:39:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 118 transitions. [2020-12-23 13:39:01,079 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 118 transitions. Word has length 14 [2020-12-23 13:39:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:01,080 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 118 transitions. [2020-12-23 13:39:01,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 118 transitions. [2020-12-23 13:39:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:39:01,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:01,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:01,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:39:01,082 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1430343700, now seen corresponding path program 1 times [2020-12-23 13:39:01,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:01,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78697271] [2020-12-23 13:39:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:01,184 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 13:39:01,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78697271] [2020-12-23 13:39:01,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:01,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:01,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896964805] [2020-12-23 13:39:01,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:39:01,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:01,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:39:01,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:39:01,187 INFO L87 Difference]: Start difference. First operand 66 states and 118 transitions. Second operand 6 states. [2020-12-23 13:39:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:01,236 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-12-23 13:39:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:01,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 13:39:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:01,237 INFO L225 Difference]: With dead ends: 63 [2020-12-23 13:39:01,237 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 13:39:01,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 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 13:39:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 13:39:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-12-23 13:39:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 13:39:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 90 transitions. [2020-12-23 13:39:01,241 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 90 transitions. Word has length 15 [2020-12-23 13:39:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:01,241 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 90 transitions. [2020-12-23 13:39:01,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:39:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 90 transitions. [2020-12-23 13:39:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:39:01,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:01,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:01,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:39:01,243 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1271805033, now seen corresponding path program 1 times [2020-12-23 13:39:01,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:01,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776046995] [2020-12-23 13:39:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:01,292 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 13:39:01,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776046995] [2020-12-23 13:39:01,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:01,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:01,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237574235] [2020-12-23 13:39:01,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:01,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:01,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:01,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:01,298 INFO L87 Difference]: Start difference. First operand 52 states and 90 transitions. Second operand 4 states. [2020-12-23 13:39:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:01,313 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2020-12-23 13:39:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:39:01,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 13:39:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:01,317 INFO L225 Difference]: With dead ends: 51 [2020-12-23 13:39:01,318 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:39:01,318 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 13:39:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:39:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:39:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:39:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:39:01,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-23 13:39:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:01,319 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:39:01,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:39:01,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:39:01,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:39:01,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:39:01 BasicIcfg [2020-12-23 13:39:01,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:39:01,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:39:01,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:39:01,326 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:39:01,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:38:56" (3/4) ... [2020-12-23 13:39:01,330 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:39:01,338 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:39:01,338 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:39:01,338 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:39:01,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:39:01,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:39:01,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:01,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:01,409 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe005_tso.opt.i-witness.graphml [2020-12-23 13:39:01,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:39:01,413 INFO L168 Benchmark]: Toolchain (without parser) took 6731.67 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 129.4 MB in the beginning and 144.8 MB in the end (delta: -15.4 MB). Peak memory consumption was 54.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:01,414 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:39:01,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.29 ms. Allocated memory is still 155.2 MB. Free memory was 129.2 MB in the beginning and 131.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:01,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:01,416 INFO L168 Benchmark]: Boogie Preprocessor took 28.84 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 128.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:01,417 INFO L168 Benchmark]: RCFGBuilder took 618.44 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 105.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:01,419 INFO L168 Benchmark]: TraceAbstraction took 5271.09 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 105.2 MB in the beginning and 147.4 MB in the end (delta: -42.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:01,420 INFO L168 Benchmark]: Witness Printer took 84.01 ms. Allocated memory is still 224.4 MB. Free memory was 147.4 MB in the beginning and 144.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:01,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 668.29 ms. Allocated memory is still 155.2 MB. Free memory was 129.2 MB in the beginning and 131.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.84 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 128.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 618.44 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 105.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5271.09 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 105.2 MB in the beginning and 147.4 MB in the end (delta: -42.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * Witness Printer took 84.01 ms. Allocated memory is still 224.4 MB. Free memory was 147.4 MB in the beginning and 144.8 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 845 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 137 SDtfs, 172 SDslu, 150 SDs, 0 SdLazy, 84 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 90 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 4001 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...