/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:04:53,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:04:53,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:04:54,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:04:54,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:04:54,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:04:54,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:04:54,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:04:54,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:04:54,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:04:54,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:04:54,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:04:54,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:04:54,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:04:54,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:04:54,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:04:54,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:04:54,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:04:54,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:04:54,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:04:54,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:04:54,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:04:54,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:04:54,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:04:54,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:04:54,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:04:54,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:04:54,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:04:54,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:04:54,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:04:54,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:04:54,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:04:54,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:04:54,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:04:54,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:04:54,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:04:54,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:04:54,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:04:54,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:04:54,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:04:54,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:04:54,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:04:54,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:04:54,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:04:54,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:04:54,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:04:54,179 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:04:54,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:04:54,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:04:54,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:04:54,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:04:54,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:04:54,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:04:54,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:04:54,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:04:54,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:04:54,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:04:54,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:04:54,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:04:54,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:04:54,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:04:54,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:04:54,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:04:54,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:04:54,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:04:54,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:04:54,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:04:54,185 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:04:54,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:04:54,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:04:54,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:04:54,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:04:54,692 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:04:54,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-12-22 11:04:54,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c269c211c/22a983dc31c840efa219bd5ddf76ced0/FLAGb380918db [2020-12-22 11:04:55,547 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:04:55,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i [2020-12-22 11:04:55,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c269c211c/22a983dc31c840efa219bd5ddf76ced0/FLAGb380918db [2020-12-22 11:04:55,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c269c211c/22a983dc31c840efa219bd5ddf76ced0 [2020-12-22 11:04:55,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:04:55,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:04:55,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:04:55,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:04:55,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:04:55,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:04:55" (1/1) ... [2020-12-22 11:04:55,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e132329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:55, skipping insertion in model container [2020-12-22 11:04:55,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:04:55" (1/1) ... [2020-12-22 11:04:55,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:04:55,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:04:56,105 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i[950,963] [2020-12-22 11:04:56,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:04:56,345 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:04:56,360 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_tso.oepc.i[950,963] [2020-12-22 11:04:56,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:04:56,503 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:04:56,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56 WrapperNode [2020-12-22 11:04:56,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:04:56,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:04:56,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:04:56,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:04:56,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:04:56,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:04:56,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:04:56,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:04:56,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... [2020-12-22 11:04:56,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:04:56,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:04:56,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:04:56,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:04:56,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 11:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:04:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:04:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:04:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:04:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:04:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:04:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:04:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:04:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:04:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:04:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:04:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:04:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:04:56,694 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:04:57,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:04:57,265 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:04:57,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:04:57 BoogieIcfgContainer [2020-12-22 11:04:57,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:04:57,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:04:57,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:04:57,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:04:57,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:04:55" (1/3) ... [2020-12-22 11:04:57,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40814d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:04:57, skipping insertion in model container [2020-12-22 11:04:57,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:04:56" (2/3) ... [2020-12-22 11:04:57,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40814d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:04:57, skipping insertion in model container [2020-12-22 11:04:57,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:04:57" (3/3) ... [2020-12-22 11:04:57,280 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2020-12-22 11:04:57,292 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:04:57,293 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:04:57,299 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:04:57,300 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:04:57,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,378 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,378 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,382 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,382 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,386 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,417 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,417 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:04:57,421 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:04:57,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:04:57,483 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:04:57,484 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:04:57,484 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:04:57,484 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:04:57,484 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:04:57,484 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:04:57,484 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:04:57,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:04:57,503 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:04:57,505 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:04:57,509 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:04:57,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-22 11:04:57,580 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-22 11:04:57,581 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:04:57,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-22 11:04:57,589 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:05:00,517 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:05:00,869 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:05:00,971 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:05:00,976 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-22 11:05:00,977 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-22 11:05:00,987 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:05:01,017 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:05:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:05:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:05:01,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:01,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:01,028 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:01,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:01,035 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-22 11:05:01,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:01,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727101391] [2020-12-22 11:05:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:01,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727101391] [2020-12-22 11:05:01,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:01,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:05:01,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892362252] [2020-12-22 11:05:01,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:05:01,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:01,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:05:01,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:05:01,248 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:05:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:01,287 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:05:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:05:01,288 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:05:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:01,311 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:05:01,311 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:05:01,313 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 [2020-12-22 11:05:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:05:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:05:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:05:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:05:01,416 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:05:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:01,419 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:05:01,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:05:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:05:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:05:01,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:01,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:01,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:05:01,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-22 11:05:01,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:01,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643134556] [2020-12-22 11:05:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:01,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643134556] [2020-12-22 11:05:01,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:01,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:05:01,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508675422] [2020-12-22 11:05:01,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:05:01,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:01,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:05:01,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:05:01,613 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:05:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:01,717 INFO L93 Difference]: Finished difference Result 545 states and 1490 transitions. [2020-12-22 11:05:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:05:01,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:05:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:01,727 INFO L225 Difference]: With dead ends: 545 [2020-12-22 11:05:01,727 INFO L226 Difference]: Without dead ends: 422 [2020-12-22 11:05:01,730 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 [2020-12-22 11:05:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-12-22 11:05:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 352. [2020-12-22 11:05:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-12-22 11:05:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 987 transitions. [2020-12-22 11:05:01,801 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 987 transitions. Word has length 9 [2020-12-22 11:05:01,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:01,802 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 987 transitions. [2020-12-22 11:05:01,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:05:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 987 transitions. [2020-12-22 11:05:01,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:05:01,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:01,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:01,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:05:01,806 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:01,807 INFO L82 PathProgramCache]: Analyzing trace with hash 39953638, now seen corresponding path program 1 times [2020-12-22 11:05:01,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:01,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211866211] [2020-12-22 11:05:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:01,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211866211] [2020-12-22 11:05:01,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:01,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:01,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764233438] [2020-12-22 11:05:01,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:01,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:01,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:01,964 INFO L87 Difference]: Start difference. First operand 352 states and 987 transitions. Second operand 5 states. [2020-12-22 11:05:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:02,040 INFO L93 Difference]: Finished difference Result 448 states and 1164 transitions. [2020-12-22 11:05:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:02,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:05:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:02,044 INFO L225 Difference]: With dead ends: 448 [2020-12-22 11:05:02,045 INFO L226 Difference]: Without dead ends: 360 [2020-12-22 11:05:02,045 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 [2020-12-22 11:05:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-12-22 11:05:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 302. [2020-12-22 11:05:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-22 11:05:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 814 transitions. [2020-12-22 11:05:02,068 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 814 transitions. Word has length 10 [2020-12-22 11:05:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:02,068 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 814 transitions. [2020-12-22 11:05:02,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 814 transitions. [2020-12-22 11:05:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:05:02,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:02,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:02,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:05:02,080 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:02,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1610224715, now seen corresponding path program 1 times [2020-12-22 11:05:02,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:02,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872759440] [2020-12-22 11:05:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:02,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:02,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872759440] [2020-12-22 11:05:02,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:02,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:02,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383882512] [2020-12-22 11:05:02,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:02,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:02,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:02,233 INFO L87 Difference]: Start difference. First operand 302 states and 814 transitions. Second operand 5 states. [2020-12-22 11:05:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:02,294 INFO L93 Difference]: Finished difference Result 382 states and 984 transitions. [2020-12-22 11:05:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:05:02,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:05:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:02,298 INFO L225 Difference]: With dead ends: 382 [2020-12-22 11:05:02,298 INFO L226 Difference]: Without dead ends: 338 [2020-12-22 11:05:02,299 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 [2020-12-22 11:05:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-22 11:05:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 286. [2020-12-22 11:05:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-12-22 11:05:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 762 transitions. [2020-12-22 11:05:02,313 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 762 transitions. Word has length 11 [2020-12-22 11:05:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:02,314 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 762 transitions. [2020-12-22 11:05:02,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 762 transitions. [2020-12-22 11:05:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:05:02,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:02,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:02,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:05:02,316 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:02,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1368326109, now seen corresponding path program 1 times [2020-12-22 11:05:02,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:02,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135148949] [2020-12-22 11:05:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:02,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135148949] [2020-12-22 11:05:02,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:02,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:02,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371871747] [2020-12-22 11:05:02,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:05:02,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:05:02,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:05:02,400 INFO L87 Difference]: Start difference. First operand 286 states and 762 transitions. Second operand 4 states. [2020-12-22 11:05:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:02,439 INFO L93 Difference]: Finished difference Result 354 states and 900 transitions. [2020-12-22 11:05:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:05:02,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 11:05:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:02,442 INFO L225 Difference]: With dead ends: 354 [2020-12-22 11:05:02,442 INFO L226 Difference]: Without dead ends: 286 [2020-12-22 11:05:02,443 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 [2020-12-22 11:05:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-12-22 11:05:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 218. [2020-12-22 11:05:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 11:05:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 572 transitions. [2020-12-22 11:05:02,454 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 572 transitions. Word has length 12 [2020-12-22 11:05:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:02,455 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 572 transitions. [2020-12-22 11:05:02,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:05:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 572 transitions. [2020-12-22 11:05:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:05:02,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:02,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:02,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:05:02,457 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1069072958, now seen corresponding path program 1 times [2020-12-22 11:05:02,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:02,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372477099] [2020-12-22 11:05:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:02,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372477099] [2020-12-22 11:05:02,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:02,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:02,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390935116] [2020-12-22 11:05:02,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:02,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:02,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:02,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:02,557 INFO L87 Difference]: Start difference. First operand 218 states and 572 transitions. Second operand 5 states. [2020-12-22 11:05:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:02,609 INFO L93 Difference]: Finished difference Result 278 states and 700 transitions. [2020-12-22 11:05:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:05:02,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:05:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:02,611 INFO L225 Difference]: With dead ends: 278 [2020-12-22 11:05:02,612 INFO L226 Difference]: Without dead ends: 134 [2020-12-22 11:05:02,613 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 [2020-12-22 11:05:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-22 11:05:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-22 11:05:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-22 11:05:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 312 transitions. [2020-12-22 11:05:02,620 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 312 transitions. Word has length 12 [2020-12-22 11:05:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:02,620 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 312 transitions. [2020-12-22 11:05:02,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 312 transitions. [2020-12-22 11:05:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:05:02,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:02,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:02,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:05:02,623 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1136607611, now seen corresponding path program 1 times [2020-12-22 11:05:02,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:02,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122513748] [2020-12-22 11:05:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:02,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122513748] [2020-12-22 11:05:02,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:02,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:05:02,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109120015] [2020-12-22 11:05:02,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:05:02,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:02,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:05:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:05:02,775 INFO L87 Difference]: Start difference. First operand 134 states and 312 transitions. Second operand 6 states. [2020-12-22 11:05:02,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:02,820 INFO L93 Difference]: Finished difference Result 166 states and 376 transitions. [2020-12-22 11:05:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:05:02,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-22 11:05:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:02,821 INFO L225 Difference]: With dead ends: 166 [2020-12-22 11:05:02,822 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 11:05:02,822 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 [2020-12-22 11:05:02,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 11:05:02,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-22 11:05:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 11:05:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 116 transitions. [2020-12-22 11:05:02,825 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 116 transitions. Word has length 14 [2020-12-22 11:05:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:02,826 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 116 transitions. [2020-12-22 11:05:02,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:05:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 116 transitions. [2020-12-22 11:05:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:05:02,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:05:02,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:05:02,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:05:02,827 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:05:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:05:02,828 INFO L82 PathProgramCache]: Analyzing trace with hash -306555335, now seen corresponding path program 2 times [2020-12-22 11:05:02,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:05:02,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716686378] [2020-12-22 11:05:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:05:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:05:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:05:02,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716686378] [2020-12-22 11:05:02,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:05:02,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:05:02,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979295495] [2020-12-22 11:05:02,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:05:02,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:05:02,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:05:02,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:05:02,937 INFO L87 Difference]: Start difference. First operand 58 states and 116 transitions. Second operand 5 states. [2020-12-22 11:05:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:05:02,966 INFO L93 Difference]: Finished difference Result 46 states and 84 transitions. [2020-12-22 11:05:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:05:02,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 11:05:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:05:02,974 INFO L225 Difference]: With dead ends: 46 [2020-12-22 11:05:02,974 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:05:02,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:05:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:05:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:05:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:05:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:05:02,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-22 11:05:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:05:02,976 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:05:02,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:05:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:05:02,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:05:02,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:05:02,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:05:02 BasicIcfg [2020-12-22 11:05:02,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:05:02,981 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:05:02,981 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:05:02,982 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:05:02,982 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:04:57" (3/4) ... [2020-12-22 11:05:02,987 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:05:02,995 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:05:02,995 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:05:02,995 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:05:03,003 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:05:03,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:05:03,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:05:03,004 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:05:03,063 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe000_tso.oepc.i-witness.graphml [2020-12-22 11:05:03,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:05:03,068 INFO L168 Benchmark]: Toolchain (without parser) took 7273.71 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 123.7 MB in the beginning and 114.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 89.6 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:03,068 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:05:03,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.10 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 92.7 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:03,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.39 ms. Allocated memory is still 151.0 MB. Free memory was 92.7 MB in the beginning and 91.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:03,071 INFO L168 Benchmark]: Boogie Preprocessor took 30.64 ms. Allocated memory is still 151.0 MB. Free memory was 91.1 MB in the beginning and 89.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:03,071 INFO L168 Benchmark]: RCFGBuilder took 682.42 ms. Allocated memory is still 151.0 MB. Free memory was 89.6 MB in the beginning and 67.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:03,072 INFO L168 Benchmark]: TraceAbstraction took 5710.37 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 67.1 MB in the beginning and 117.9 MB in the end (delta: -50.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:03,073 INFO L168 Benchmark]: Witness Printer took 82.22 ms. Allocated memory is still 230.7 MB. Free memory was 117.9 MB in the beginning and 114.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:05:03,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 708.10 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 92.7 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.39 ms. Allocated memory is still 151.0 MB. Free memory was 92.7 MB in the beginning and 91.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.64 ms. Allocated memory is still 151.0 MB. Free memory was 91.1 MB in the beginning and 89.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 682.42 ms. Allocated memory is still 151.0 MB. Free memory was 89.6 MB in the beginning and 67.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5710.37 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 67.1 MB in the beginning and 117.9 MB in the end (delta: -50.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB. * Witness Printer took 82.22 ms. Allocated memory is still 230.7 MB. Free memory was 117.9 MB in the beginning and 114.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 743 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 191 SDtfs, 188 SDslu, 271 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 248 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 4849 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...