/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/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:08:42,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:08:42,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:08:42,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:08:42,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:08:42,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:08:42,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:08:42,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:08:42,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:08:42,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:08:42,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:08:42,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:08:42,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:08:42,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:08:42,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:08:42,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:08:42,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:08:42,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:08:42,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:08:42,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:08:42,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:08:42,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:08:42,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:08:42,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:08:42,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:08:42,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:08:42,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:08:42,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:08:42,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:08:42,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:08:42,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:08:42,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:08:42,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:08:42,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:08:42,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:08:42,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:08:42,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:08:42,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:08:42,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:08:42,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:08:42,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:08:42,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:08:42,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:08:42,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:08:42,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:08:42,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:08:42,515 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:08:42,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:08:42,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:08:42,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:08:42,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:08:42,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:08:42,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:08:42,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:08:42,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:08:42,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:08:42,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:08:42,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:08:42,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:08:42,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:08:42,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:08:42,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:08:42,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:08:42,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:08:42,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:08:42,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:08:42,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:08:42,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:08:42,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:08:42,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:08:42,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:08:42,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:08:42,967 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:08:42,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2020-12-22 11:08:43,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891661f2e/b4ffd5b40d8c4e40b7161ce1c126ca1d/FLAG34ac7b38d [2020-12-22 11:08:43,807 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:08:43,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2020-12-22 11:08:43,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891661f2e/b4ffd5b40d8c4e40b7161ce1c126ca1d/FLAG34ac7b38d [2020-12-22 11:08:44,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891661f2e/b4ffd5b40d8c4e40b7161ce1c126ca1d [2020-12-22 11:08:44,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:08:44,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:08:44,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:08:44,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:08:44,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:08:44,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:44,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f36556e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44, skipping insertion in model container [2020-12-22 11:08:44,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:44,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:08:44,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:08:44,492 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/safe014_tso.oepc.i[950,963] [2020-12-22 11:08:44,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:08:44,717 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:08:44,735 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/safe014_tso.oepc.i[950,963] [2020-12-22 11:08:44,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:08:44,926 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:08:44,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44 WrapperNode [2020-12-22 11:08:44,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:08:44,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:08:44,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:08:44,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:08:44,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:44,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:44,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:08:44,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:08:44,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:08:44,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:08:44,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:44,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:44,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:44,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:45,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:45,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:45,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (1/1) ... [2020-12-22 11:08:45,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:08:45,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:08:45,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:08:45,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:08:45,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (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 11:08:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:08:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:08:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:08:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:08:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:08:45,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:08:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:08:45,130 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:08:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:08:45,131 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:08:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:08:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:08:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:08:45,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:08:45,138 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 11:08:45,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:08:45,490 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:08:45,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:08:45 BoogieIcfgContainer [2020-12-22 11:08:45,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:08:45,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:08:45,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:08:45,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:08:45,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:08:44" (1/3) ... [2020-12-22 11:08:45,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbc573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:08:45, skipping insertion in model container [2020-12-22 11:08:45,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:08:44" (2/3) ... [2020-12-22 11:08:45,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbc573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:08:45, skipping insertion in model container [2020-12-22 11:08:45,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:08:45" (3/3) ... [2020-12-22 11:08:45,501 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-12-22 11:08:45,508 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:08:45,509 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:08:45,513 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:08:45,514 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:08:45,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,591 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,591 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,595 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,595 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,599 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,599 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,600 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,600 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,600 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,600 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,600 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,601 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,630 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:08:45,634 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:08:45,664 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:08:45,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:08:45,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:08:45,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:08:45,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:08:45,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:08:45,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:08:45,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:08:45,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:08:45,709 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:08:45,712 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:08:45,716 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-22 11:08:45,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-22 11:08:45,773 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-22 11:08:45,773 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:08:45,782 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 11:08:45,789 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-22 11:08:48,398 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:08:48,688 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 11:08:48,776 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-22 11:08:48,776 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-22 11:08:48,785 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-22 11:08:48,816 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-22 11:08:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-22 11:08:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:08:48,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:48,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:48,827 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:48,833 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-22 11:08:48,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:48,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427158014] [2020-12-22 11:08:48,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:49,127 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 11:08:49,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427158014] [2020-12-22 11:08:49,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:49,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:08:49,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631178948] [2020-12-22 11:08:49,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:08:49,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:08:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:08:49,163 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-22 11:08:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:49,216 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-22 11:08:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:08:49,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 11:08:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:49,237 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:08:49,237 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 11:08:49,238 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 11:08:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 11:08:49,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-22 11:08:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-22 11:08:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-22 11:08:49,329 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-22 11:08:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:49,332 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-22 11:08:49,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:08:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-22 11:08:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:08:49,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:49,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:49,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:08:49,336 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:49,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:49,337 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-22 11:08:49,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:49,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733842138] [2020-12-22 11:08:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:49,553 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 11:08:49,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733842138] [2020-12-22 11:08:49,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:49,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:08:49,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139395514] [2020-12-22 11:08:49,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:49,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:49,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:49,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:49,562 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-22 11:08:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:49,610 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-22 11:08:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:08:49,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:08:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:49,619 INFO L225 Difference]: With dead ends: 330 [2020-12-22 11:08:49,619 INFO L226 Difference]: Without dead ends: 266 [2020-12-22 11:08:49,620 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 11:08:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-22 11:08:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-22 11:08:49,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-22 11:08:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-22 11:08:49,676 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-22 11:08:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:49,679 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-22 11:08:49,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-22 11:08:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:08:49,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:49,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:49,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:08:49,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:49,683 INFO L82 PathProgramCache]: Analyzing trace with hash 744680885, now seen corresponding path program 1 times [2020-12-22 11:08:49,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:49,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401550113] [2020-12-22 11:08:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:49,850 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 11:08:49,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401550113] [2020-12-22 11:08:49,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:49,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:08:49,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670191719] [2020-12-22 11:08:49,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:08:49,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:49,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:08:49,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:08:49,853 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-22 11:08:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:49,915 INFO L93 Difference]: Finished difference Result 362 states and 1008 transitions. [2020-12-22 11:08:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:08:49,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 11:08:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:49,918 INFO L225 Difference]: With dead ends: 362 [2020-12-22 11:08:49,918 INFO L226 Difference]: Without dead ends: 218 [2020-12-22 11:08:49,919 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 11:08:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-22 11:08:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-22 11:08:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 11:08:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 592 transitions. [2020-12-22 11:08:49,930 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 592 transitions. Word has length 10 [2020-12-22 11:08:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:49,930 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 592 transitions. [2020-12-22 11:08:49,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:08:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 592 transitions. [2020-12-22 11:08:49,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:08:49,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:49,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:49,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:08:49,933 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1281410722, now seen corresponding path program 1 times [2020-12-22 11:08:49,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:49,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643379378] [2020-12-22 11:08:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:50,048 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 11:08:50,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643379378] [2020-12-22 11:08:50,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:50,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:08:50,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530321292] [2020-12-22 11:08:50,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:08:50,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:50,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:08:50,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:08:50,053 INFO L87 Difference]: Start difference. First operand 218 states and 592 transitions. Second operand 5 states. [2020-12-22 11:08:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:50,125 INFO L93 Difference]: Finished difference Result 278 states and 737 transitions. [2020-12-22 11:08:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:08:50,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:08:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:50,127 INFO L225 Difference]: With dead ends: 278 [2020-12-22 11:08:50,127 INFO L226 Difference]: Without dead ends: 170 [2020-12-22 11:08:50,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 11:08:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-22 11:08:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-12-22 11:08:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-22 11:08:50,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-12-22 11:08:50,135 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-12-22 11:08:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:50,136 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-12-22 11:08:50,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:08:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-12-22 11:08:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:08:50,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:50,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:50,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:08:50,138 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:50,138 INFO L82 PathProgramCache]: Analyzing trace with hash -663598862, now seen corresponding path program 1 times [2020-12-22 11:08:50,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:50,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056900092] [2020-12-22 11:08:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:50,244 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 11:08:50,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056900092] [2020-12-22 11:08:50,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:50,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:08:50,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199018890] [2020-12-22 11:08:50,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:08:50,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:50,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:08:50,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:08:50,249 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 5 states. [2020-12-22 11:08:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:50,304 INFO L93 Difference]: Finished difference Result 250 states and 609 transitions. [2020-12-22 11:08:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:08:50,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 11:08:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:50,307 INFO L225 Difference]: With dead ends: 250 [2020-12-22 11:08:50,307 INFO L226 Difference]: Without dead ends: 202 [2020-12-22 11:08:50,307 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 11:08:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-22 11:08:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 158. [2020-12-22 11:08:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-22 11:08:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 382 transitions. [2020-12-22 11:08:50,314 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 382 transitions. Word has length 12 [2020-12-22 11:08:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:50,314 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 382 transitions. [2020-12-22 11:08:50,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:08:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 382 transitions. [2020-12-22 11:08:50,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:08:50,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:50,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:50,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:08:50,316 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:50,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:50,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1497460825, now seen corresponding path program 1 times [2020-12-22 11:08:50,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:50,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408326851] [2020-12-22 11:08:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:50,412 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 11:08:50,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408326851] [2020-12-22 11:08:50,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:50,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:08:50,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27011610] [2020-12-22 11:08:50,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:08:50,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:50,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:08:50,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:08:50,415 INFO L87 Difference]: Start difference. First operand 158 states and 382 transitions. Second operand 6 states. [2020-12-22 11:08:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:50,473 INFO L93 Difference]: Finished difference Result 172 states and 399 transitions. [2020-12-22 11:08:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:08:50,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 11:08:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:50,474 INFO L225 Difference]: With dead ends: 172 [2020-12-22 11:08:50,474 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 11:08:50,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:08:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 11:08:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-22 11:08:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 11:08:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2020-12-22 11:08:50,478 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2020-12-22 11:08:50,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:50,478 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2020-12-22 11:08:50,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:08:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2020-12-22 11:08:50,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:08:50,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:50,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:50,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:08:50,479 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:50,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 1 times [2020-12-22 11:08:50,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:50,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410807734] [2020-12-22 11:08:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:50,530 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 11:08:50,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410807734] [2020-12-22 11:08:50,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:50,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:08:50,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504545659] [2020-12-22 11:08:50,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:08:50,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:50,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:08:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:08:50,533 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand 4 states. [2020-12-22 11:08:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:50,555 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2020-12-22 11:08:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:08:50,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 11:08:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:50,556 INFO L225 Difference]: With dead ends: 66 [2020-12-22 11:08:50,556 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 11:08:50,557 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 11:08:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 11:08:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 11:08:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 11:08:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-12-22 11:08:50,559 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-12-22 11:08:50,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:50,560 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-12-22 11:08:50,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:08:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-12-22 11:08:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:08:50,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:50,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:50,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:08:50,561 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:50,561 INFO L82 PathProgramCache]: Analyzing trace with hash 182443752, now seen corresponding path program 1 times [2020-12-22 11:08:50,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:50,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694340492] [2020-12-22 11:08:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:50,617 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 11:08:50,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694340492] [2020-12-22 11:08:50,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:50,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:08:50,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308428249] [2020-12-22 11:08:50,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:08:50,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:50,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:08:50,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:08:50,620 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 5 states. [2020-12-22 11:08:50,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:50,647 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2020-12-22 11:08:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:08:50,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:08:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:50,648 INFO L225 Difference]: With dead ends: 42 [2020-12-22 11:08:50,648 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 11:08:50,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:08:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 11:08:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 11:08:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 11:08:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2020-12-22 11:08:50,651 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2020-12-22 11:08:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:50,651 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2020-12-22 11:08:50,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:08:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2020-12-22 11:08:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:08:50,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:08:50,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:08:50,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:08:50,652 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:08:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:08:50,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1015325315, now seen corresponding path program 1 times [2020-12-22 11:08:50,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:08:50,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480602325] [2020-12-22 11:08:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:08:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:08:50,706 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 11:08:50,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480602325] [2020-12-22 11:08:50,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:08:50,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:08:50,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791520266] [2020-12-22 11:08:50,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:08:50,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:08:50,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:08:50,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:08:50,709 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2020-12-22 11:08:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:08:50,764 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-12-22 11:08:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:08:50,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:08:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:08:50,764 INFO L225 Difference]: With dead ends: 28 [2020-12-22 11:08:50,765 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:08:50,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:08:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:08:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:08:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:08:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:08:50,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-22 11:08:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:08:50,767 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:08:50,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:08:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:08:50,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:08:50,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:08:50,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:08:50 BasicIcfg [2020-12-22 11:08:50,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:08:50,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:08:50,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:08:50,772 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:08:50,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:08:45" (3/4) ... [2020-12-22 11:08:50,777 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:08:50,784 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:08:50,785 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:08:50,785 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:08:50,790 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:08:50,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:08:50,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:08:50,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:08:50,834 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe014_tso.oepc.i-witness.graphml [2020-12-22 11:08:50,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:08:50,836 INFO L168 Benchmark]: Toolchain (without parser) took 6715.14 ms. Allocated memory was 157.3 MB in the beginning and 248.5 MB in the end (delta: 91.2 MB). Free memory was 130.7 MB in the beginning and 221.9 MB in the end (delta: -91.2 MB). Peak memory consumption was 939.5 kB. Max. memory is 8.0 GB. [2020-12-22 11:08:50,836 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:08:50,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.76 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 130.8 MB in the end (delta: -278.4 kB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:50,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.00 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 128.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:50,838 INFO L168 Benchmark]: Boogie Preprocessor took 30.08 ms. Allocated memory is still 157.3 MB. Free memory was 128.8 MB in the beginning and 127.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:50,839 INFO L168 Benchmark]: RCFGBuilder took 481.71 ms. Allocated memory is still 157.3 MB. Free memory was 127.8 MB in the beginning and 105.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:50,839 INFO L168 Benchmark]: TraceAbstraction took 5277.78 ms. Allocated memory was 157.3 MB in the beginning and 248.5 MB in the end (delta: 91.2 MB). Free memory was 105.2 MB in the beginning and 224.6 MB in the end (delta: -119.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:08:50,840 INFO L168 Benchmark]: Witness Printer took 62.19 ms. Allocated memory is still 248.5 MB. Free memory was 224.6 MB in the beginning and 221.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:08:50,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 802.76 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 130.8 MB in the end (delta: -278.4 kB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.00 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 128.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.08 ms. Allocated memory is still 157.3 MB. Free memory was 128.8 MB in the beginning and 127.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 481.71 ms. Allocated memory is still 157.3 MB. Free memory was 127.8 MB in the beginning and 105.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5277.78 ms. Allocated memory was 157.3 MB in the beginning and 248.5 MB in the end (delta: 91.2 MB). Free memory was 105.2 MB in the beginning and 224.6 MB in the end (delta: -119.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 62.19 ms. Allocated memory is still 248.5 MB. Free memory was 224.6 MB in the beginning and 221.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 734 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 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: 5.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 195 SDtfs, 215 SDslu, 309 SDs, 0 SdLazy, 133 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 44 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 4549 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...