/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:45:28,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:45:28,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:45:28,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:45:28,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:45:28,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:45:28,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:45:28,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:45:28,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:45:28,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:45:28,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:45:28,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:45:28,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:45:28,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:45:28,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:45:28,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:45:28,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:45:28,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:45:28,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:45:28,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:45:28,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:45:28,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:45:28,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:45:28,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:45:28,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 12:45:28,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 12:45:28,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 12:45:28,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 12:45:28,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 12:45:28,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 12:45:28,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:45:28,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:45:28,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:45:28,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:45:28,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:45:28,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:45:28,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:45:28,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:45:28,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:45:28,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:45:28,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:45:28,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:45:28,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:45:28,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:45:28,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:45:28,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:45:28,562 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:45:28,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:45:28,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:45:28,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:45:28,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:45:28,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:45:28,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:45:28,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:45:28,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:45:28,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:45:28,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:45:28,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:45:28,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:45:28,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:45:28,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:45:28,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:45:28,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:45:28,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:45:28,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:45:28,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:45:28,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:45:28,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:45:28,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:45:28,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:45:28,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:45:28,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:45:29,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:45:29,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:45:29,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:45:29,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:45:29,062 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:45:29,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-11-09 12:45:29,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf2b4c82/868b2eb5471c45f89ab4ebcf6a8177a5/FLAGe8dc4abf0 [2020-11-09 12:45:29,900 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:45:29,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-11-09 12:45:29,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf2b4c82/868b2eb5471c45f89ab4ebcf6a8177a5/FLAGe8dc4abf0 [2020-11-09 12:45:30,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abf2b4c82/868b2eb5471c45f89ab4ebcf6a8177a5 [2020-11-09 12:45:30,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:45:30,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:45:30,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:45:30,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:45:30,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:45:30,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5078f216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30, skipping insertion in model container [2020-11-09 12:45:30,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:45:30,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:45:30,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:45:30,558 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:45:30,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:45:30,725 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:45:30,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30 WrapperNode [2020-11-09 12:45:30,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:45:30,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:45:30,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:45:30,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:45:30,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:45:30,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:45:30,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:45:30,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:45:30,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (1/1) ... [2020-11-09 12:45:30,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:45:30,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:45:30,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:45:30,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:45:30,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (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 [2020-11-09 12:45:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:45:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:45:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:45:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:45:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:45:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:45:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:45:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:45:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:45:30,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:45:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:45:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:45:30,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:45:30,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:45:30,937 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:45:31,567 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:45:31,567 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:45:31,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:45:31 BoogieIcfgContainer [2020-11-09 12:45:31,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:45:31,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:45:31,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:45:31,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:45:31,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:45:30" (1/3) ... [2020-11-09 12:45:31,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afa513b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:45:31, skipping insertion in model container [2020-11-09 12:45:31,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:30" (2/3) ... [2020-11-09 12:45:31,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afa513b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:45:31, skipping insertion in model container [2020-11-09 12:45:31,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:45:31" (3/3) ... [2020-11-09 12:45:31,582 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-11-09 12:45:31,599 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:45:31,599 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:45:31,603 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:45:31,604 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:45:31,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,649 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,649 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,649 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,650 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,650 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,654 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,658 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,658 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,659 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,659 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,659 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,660 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,667 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,667 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,683 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,684 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,685 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,688 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,689 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:31,694 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:45:31,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:45:31,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:45:31,743 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:45:31,744 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:45:31,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:45:31,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:45:31,744 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:45:31,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:45:31,744 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:45:31,761 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:45:31,765 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-09 12:45:31,769 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-09 12:45:31,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-09 12:45:31,834 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-09 12:45:31,835 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:45:31,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:45:31,843 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:45:35,150 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-11-09 12:45:36,167 WARN L194 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-09 12:45:36,297 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 12:45:36,580 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-09 12:45:36,733 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 12:45:37,002 INFO L131 LiptonReduction]: Checked pairs total: 2810 [2020-11-09 12:45:37,003 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-09 12:45:37,010 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:45:37,038 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:45:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:45:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:45:37,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:37,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:37,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:37,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:37,057 INFO L82 PathProgramCache]: Analyzing trace with hash -853874994, now seen corresponding path program 1 times [2020-11-09 12:45:37,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:37,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682881840] [2020-11-09 12:45:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:37,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682881840] [2020-11-09 12:45:37,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:37,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:45:37,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144719805] [2020-11-09 12:45:37,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:45:37,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:37,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:45:37,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:37,403 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:45:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:37,453 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 12:45:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:45:37,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:45:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:37,472 INFO L225 Difference]: With dead ends: 282 [2020-11-09 12:45:37,472 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 12:45:37,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 12:45:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 12:45:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 12:45:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 12:45:37,547 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 12:45:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:37,548 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 12:45:37,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:45:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 12:45:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:45:37,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:37,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:37,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:45:37,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash -700352928, now seen corresponding path program 1 times [2020-11-09 12:45:37,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:37,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164829500] [2020-11-09 12:45:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:37,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164829500] [2020-11-09 12:45:37,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:37,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:45:37,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436928336] [2020-11-09 12:45:37,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:45:37,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:45:37,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:45:37,670 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 12:45:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:37,724 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-09 12:45:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:45:37,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:45:37,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:37,731 INFO L225 Difference]: With dead ends: 242 [2020-11-09 12:45:37,731 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 12:45:37,733 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 [2020-11-09 12:45:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 12:45:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 12:45:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 12:45:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 12:45:37,756 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-09 12:45:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:37,756 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 12:45:37,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:45:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 12:45:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:45:37,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:37,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:37,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:45:37,759 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2063010818, now seen corresponding path program 1 times [2020-11-09 12:45:37,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:37,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531523531] [2020-11-09 12:45:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:37,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:37,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531523531] [2020-11-09 12:45:37,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:37,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:45:37,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151237058] [2020-11-09 12:45:37,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:45:37,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:45:37,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:37,822 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-09 12:45:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:37,829 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-11-09 12:45:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:45:37,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 12:45:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:37,832 INFO L225 Difference]: With dead ends: 140 [2020-11-09 12:45:37,832 INFO L226 Difference]: Without dead ends: 140 [2020-11-09 12:45:37,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-09 12:45:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-11-09 12:45:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-09 12:45:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-11-09 12:45:37,844 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-11-09 12:45:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:37,845 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-11-09 12:45:37,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:45:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-11-09 12:45:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:45:37,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:37,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:37,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:45:37,847 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1374781277, now seen corresponding path program 1 times [2020-11-09 12:45:37,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:37,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993822276] [2020-11-09 12:45:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:37,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993822276] [2020-11-09 12:45:37,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:37,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:45:37,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014289467] [2020-11-09 12:45:37,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:45:37,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:37,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:45:37,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:45:37,944 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-11-09 12:45:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:37,966 INFO L93 Difference]: Finished difference Result 158 states and 376 transitions. [2020-11-09 12:45:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:45:37,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:45:37,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:37,968 INFO L225 Difference]: With dead ends: 158 [2020-11-09 12:45:37,968 INFO L226 Difference]: Without dead ends: 68 [2020-11-09 12:45:37,969 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 [2020-11-09 12:45:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-09 12:45:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-09 12:45:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-09 12:45:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-11-09 12:45:37,974 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-11-09 12:45:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:37,975 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-11-09 12:45:37,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:45:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-11-09 12:45:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:45:37,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:37,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:37,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:45:37,976 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:37,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1721558133, now seen corresponding path program 1 times [2020-11-09 12:45:37,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:37,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986746042] [2020-11-09 12:45:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:38,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986746042] [2020-11-09 12:45:38,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:38,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:45:38,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937957850] [2020-11-09 12:45:38,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:45:38,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:38,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:45:38,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:45:38,060 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-11-09 12:45:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:38,099 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-11-09 12:45:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:45:38,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:45:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:38,100 INFO L225 Difference]: With dead ends: 81 [2020-11-09 12:45:38,100 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 12:45:38,101 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 [2020-11-09 12:45:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 12:45:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-09 12:45:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-09 12:45:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-11-09 12:45:38,105 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-11-09 12:45:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:38,105 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-11-09 12:45:38,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:45:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-11-09 12:45:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:45:38,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:38,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:38,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:45:38,107 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:38,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:38,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1881599875, now seen corresponding path program 1 times [2020-11-09 12:45:38,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:38,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976327360] [2020-11-09 12:45:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:38,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976327360] [2020-11-09 12:45:38,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:38,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:45:38,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264730282] [2020-11-09 12:45:38,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:45:38,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:38,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:45:38,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:45:38,236 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-11-09 12:45:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:38,281 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-11-09 12:45:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:45:38,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:45:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:38,282 INFO L225 Difference]: With dead ends: 60 [2020-11-09 12:45:38,282 INFO L226 Difference]: Without dead ends: 45 [2020-11-09 12:45:38,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:45:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-09 12:45:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-09 12:45:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 12:45:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-11-09 12:45:38,286 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-11-09 12:45:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:38,286 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-11-09 12:45:38,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:45:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-11-09 12:45:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:45:38,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:38,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:38,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:45:38,288 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:38,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1799830367, now seen corresponding path program 1 times [2020-11-09 12:45:38,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:38,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966747969] [2020-11-09 12:45:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:38,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966747969] [2020-11-09 12:45:38,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:38,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:45:38,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777527596] [2020-11-09 12:45:38,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:45:38,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:38,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:45:38,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:45:38,358 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-11-09 12:45:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:38,410 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-11-09 12:45:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:45:38,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:45:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:38,412 INFO L225 Difference]: With dead ends: 42 [2020-11-09 12:45:38,412 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 12:45:38,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:45:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 12:45:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 12:45:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 12:45:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-09 12:45:38,415 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-11-09 12:45:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:38,415 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-09 12:45:38,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:45:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-09 12:45:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:45:38,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:38,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:38,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:45:38,417 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1269131745, now seen corresponding path program 1 times [2020-11-09 12:45:38,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:38,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133616959] [2020-11-09 12:45:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:38,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133616959] [2020-11-09 12:45:38,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:38,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:45:38,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463687551] [2020-11-09 12:45:38,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:45:38,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:38,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:45:38,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:45:38,462 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-09 12:45:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:38,475 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-09 12:45:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:45:38,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:45:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:38,476 INFO L225 Difference]: With dead ends: 35 [2020-11-09 12:45:38,476 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:45:38,477 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 [2020-11-09 12:45:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:45:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:45:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:45:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:45:38,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:45:38,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:38,478 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:45:38,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:45:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:45:38,478 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:45:38,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:45:38,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:45:38 BasicIcfg [2020-11-09 12:45:38,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:45:38,485 INFO L168 Benchmark]: Toolchain (without parser) took 8350.11 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 124.9 MB in the beginning and 162.6 MB in the end (delta: -37.7 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:38,486 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:45:38,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.48 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 125.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:38,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 123.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:38,488 INFO L168 Benchmark]: Boogie Preprocessor took 29.10 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 122.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:38,489 INFO L168 Benchmark]: RCFGBuilder took 728.22 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 100.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:38,490 INFO L168 Benchmark]: TraceAbstraction took 6908.15 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.0 MB in the beginning and 162.6 MB in the end (delta: -62.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:38,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 584.48 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 125.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 87.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 123.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.10 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 122.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 728.22 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 100.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6908.15 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 100.0 MB in the beginning and 162.6 MB in the end (delta: -62.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1064 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 90 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 136 SDtfs, 121 SDslu, 149 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3169 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...