/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 19:38:46,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 19:38:46,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 19:38:46,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 19:38:46,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 19:38:46,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 19:38:46,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 19:38:46,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 19:38:46,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 19:38:46,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 19:38:46,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 19:38:46,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 19:38:46,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 19:38:46,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 19:38:46,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 19:38:46,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 19:38:46,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 19:38:46,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 19:38:46,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 19:38:46,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 19:38:46,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 19:38:46,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 19:38:46,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 19:38:46,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 19:38:46,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 19:38:46,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 19:38:46,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 19:38:46,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 19:38:46,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 19:38:46,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 19:38:46,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 19:38:46,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 19:38:46,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 19:38:46,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 19:38:46,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 19:38:46,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 19:38:46,674 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 [2020-10-15 19:38:46,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 19:38:46,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 19:38:46,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 19:38:46,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 19:38:46,714 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 19:38:46,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 19:38:46,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 19:38:46,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 19:38:46,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 19:38:46,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 19:38:46,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 19:38:46,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 19:38:46,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 19:38:46,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 19:38:46,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 19:38:46,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 19:38:46,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 19:38:46,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 19:38:46,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 19:38:46,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 19:38:46,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 19:38:46,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:38:46,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 19:38:46,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 19:38:46,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 19:38:46,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 19:38:46,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 19:38:46,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 19:38:46,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 19:38:46,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 19:38:46,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 19:38:46,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 19:38:46,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 19:38:46,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 19:38:46,987 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 19:38:46,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-15 19:38:47,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60be1b1f/7954c3b5253e4594ac88e0b3f13ff56e/FLAG91de66587 [2020-10-15 19:38:47,439 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 19:38:47,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-15 19:38:47,440 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 19:38:47,440 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 19:38:47,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60be1b1f/7954c3b5253e4594ac88e0b3f13ff56e/FLAG91de66587 [2020-10-15 19:38:47,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60be1b1f/7954c3b5253e4594ac88e0b3f13ff56e [2020-10-15 19:38:47,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 19:38:47,825 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 19:38:47,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 19:38:47,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 19:38:47,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 19:38:47,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:47" (1/1) ... [2020-10-15 19:38:47,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276dd400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:47, skipping insertion in model container [2020-10-15 19:38:47,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:47" (1/1) ... [2020-10-15 19:38:47,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 19:38:47,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 19:38:48,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:38:48,053 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 19:38:48,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:38:48,165 INFO L208 MainTranslator]: Completed translation [2020-10-15 19:38:48,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48 WrapperNode [2020-10-15 19:38:48,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 19:38:48,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 19:38:48,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 19:38:48,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 19:38:48,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 19:38:48,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 19:38:48,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 19:38:48,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 19:38:48,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (1/1) ... [2020-10-15 19:38:48,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 19:38:48,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 19:38:48,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 19:38:48,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 19:38:48,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (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 [2020-10-15 19:38:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 19:38:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-15 19:38:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-15 19:38:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 19:38:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 19:38:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 19:38:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 19:38:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 19:38:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 19:38:48,269 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 19:38:48,505 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 19:38:48,505 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-15 19:38:48,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:48 BoogieIcfgContainer [2020-10-15 19:38:48,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 19:38:48,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 19:38:48,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 19:38:48,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 19:38:48,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:38:47" (1/3) ... [2020-10-15 19:38:48,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8bf280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:48, skipping insertion in model container [2020-10-15 19:38:48,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:48" (2/3) ... [2020-10-15 19:38:48,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8bf280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:48, skipping insertion in model container [2020-10-15 19:38:48,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:48" (3/3) ... [2020-10-15 19:38:48,515 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-15 19:38:48,526 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 19:38:48,526 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 19:38:48,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 19:38:48,535 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 19:38:48,576 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,577 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,577 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,577 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,577 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,578 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,578 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,578 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,578 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,579 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,579 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,580 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,580 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,580 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,580 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,581 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,582 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,582 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,582 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,583 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,583 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,583 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,583 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,584 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,584 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,584 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,585 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,585 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,585 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,585 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,585 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,586 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,586 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,586 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,586 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,587 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,587 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,591 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,592 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,592 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,592 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,592 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,593 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,593 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,607 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,607 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,608 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,608 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,608 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,608 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,608 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,623 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,623 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,623 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,623 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,624 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,624 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,624 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:38:48,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 19:38:48,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:38:48,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:38:48,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:38:48,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:38:48,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:38:48,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:38:48,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:38:48,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:38:48,722 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:38:48,724 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-15 19:38:48,726 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-15 19:38:48,728 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-15 19:38:48,786 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-15 19:38:48,787 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-15 19:38:48,792 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-10-15 19:38:48,796 INFO L117 LiptonReduction]: Number of co-enabled transitions 1008 [2020-10-15 19:38:50,137 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-15 19:38:50,264 INFO L132 LiptonReduction]: Checked pairs total: 4010 [2020-10-15 19:38:50,264 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-15 19:38:50,271 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-15 19:38:50,303 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-15 19:38:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-15 19:38:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:38:50,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:50,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:50,325 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:50,330 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-15 19:38:50,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:50,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436382539] [2020-10-15 19:38:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:50,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436382539] [2020-10-15 19:38:50,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:50,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 19:38:50,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939689429] [2020-10-15 19:38:50,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:38:50,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:50,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:38:50,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:38:50,994 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-15 19:38:52,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:52,046 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-15 19:38:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:38:52,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-15 19:38:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:52,091 INFO L225 Difference]: With dead ends: 748 [2020-10-15 19:38:52,092 INFO L226 Difference]: Without dead ends: 740 [2020-10-15 19:38:52,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:38:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-15 19:38:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-15 19:38:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-15 19:38:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-15 19:38:52,226 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-15 19:38:52,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:52,228 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-15 19:38:52,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:38:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-15 19:38:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:38:52,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:52,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:52,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 19:38:52,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-15 19:38:52,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:52,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092826469] [2020-10-15 19:38:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:52,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092826469] [2020-10-15 19:38:52,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:52,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 19:38:52,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308706448] [2020-10-15 19:38:52,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:38:52,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:52,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:38:52,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:38:52,801 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-15 19:38:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:55,603 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-15 19:38:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 19:38:55,604 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-15 19:38:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:55,616 INFO L225 Difference]: With dead ends: 1252 [2020-10-15 19:38:55,616 INFO L226 Difference]: Without dead ends: 1243 [2020-10-15 19:38:55,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 19:38:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-15 19:38:55,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-15 19:38:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-15 19:38:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-15 19:38:55,668 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-15 19:38:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:55,668 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-15 19:38:55,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:38:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-15 19:38:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:38:55,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:55,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:55,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 19:38:55,672 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-15 19:38:55,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:55,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771885792] [2020-10-15 19:38:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:56,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771885792] [2020-10-15 19:38:56,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:56,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 19:38:56,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441355830] [2020-10-15 19:38:56,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:38:56,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:56,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:38:56,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:38:56,209 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-15 19:38:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:38:57,056 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-15 19:38:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:38:57,057 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-15 19:38:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:38:57,061 INFO L225 Difference]: With dead ends: 683 [2020-10-15 19:38:57,062 INFO L226 Difference]: Without dead ends: 675 [2020-10-15 19:38:57,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:38:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-15 19:38:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-15 19:38:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-15 19:38:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-15 19:38:57,085 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-15 19:38:57,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:38:57,086 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-15 19:38:57,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:38:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-15 19:38:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:38:57,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:38:57,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:38:57,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 19:38:57,089 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:38:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:38:57,089 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-15 19:38:57,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:38:57,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549598336] [2020-10-15 19:38:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:38:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:38:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:38:57,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549598336] [2020-10-15 19:38:57,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:38:57,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 19:38:57,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940558951] [2020-10-15 19:38:57,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:38:57,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:38:57,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:38:57,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:38:57,598 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-15 19:39:00,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:00,774 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-15 19:39:00,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-15 19:39:00,775 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 19:39:00,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:39:00,784 INFO L225 Difference]: With dead ends: 1378 [2020-10-15 19:39:00,784 INFO L226 Difference]: Without dead ends: 1360 [2020-10-15 19:39:00,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=372, Invalid=1980, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 19:39:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-15 19:39:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-15 19:39:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-15 19:39:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-15 19:39:00,821 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-15 19:39:00,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:00,830 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-15 19:39:00,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:39:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-15 19:39:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:39:00,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:00,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:00,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 19:39:00,833 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:39:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-15 19:39:00,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:00,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49339291] [2020-10-15 19:39:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:00,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49339291] [2020-10-15 19:39:00,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:39:00,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 19:39:00,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510334668] [2020-10-15 19:39:00,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 19:39:00,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:39:00,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 19:39:00,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 19:39:00,950 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-15 19:39:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:01,119 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-15 19:39:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:39:01,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-15 19:39:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:39:01,126 INFO L225 Difference]: With dead ends: 912 [2020-10-15 19:39:01,126 INFO L226 Difference]: Without dead ends: 773 [2020-10-15 19:39:01,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:39:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-15 19:39:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-15 19:39:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-15 19:39:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-15 19:39:01,145 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-15 19:39:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:01,145 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-15 19:39:01,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 19:39:01,145 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-15 19:39:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:39:01,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:01,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:01,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 19:39:01,148 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:39:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:01,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-15 19:39:01,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:01,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575965771] [2020-10-15 19:39:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:01,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575965771] [2020-10-15 19:39:01,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:39:01,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 19:39:01,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353386595] [2020-10-15 19:39:01,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 19:39:01,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:39:01,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 19:39:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 19:39:01,631 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-15 19:39:03,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:03,427 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-15 19:39:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:39:03,427 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-15 19:39:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:39:03,434 INFO L225 Difference]: With dead ends: 1088 [2020-10-15 19:39:03,434 INFO L226 Difference]: Without dead ends: 1082 [2020-10-15 19:39:03,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:39:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-15 19:39:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-15 19:39:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-15 19:39:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-15 19:39:03,457 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-15 19:39:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:03,457 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-15 19:39:03,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 19:39:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-15 19:39:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:39:03,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:03,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:03,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 19:39:03,460 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:39:03,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:03,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-15 19:39:03,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:03,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528331530] [2020-10-15 19:39:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:03,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528331530] [2020-10-15 19:39:03,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:39:03,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 19:39:03,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555724724] [2020-10-15 19:39:03,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:39:03,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:39:03,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:39:03,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:39:03,825 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-15 19:39:04,548 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-15 19:39:04,980 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-15 19:39:05,765 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-15 19:39:06,055 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-15 19:39:06,239 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-15 19:39:06,819 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-15 19:39:07,078 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-15 19:39:07,213 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-15 19:39:07,721 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-15 19:39:07,900 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-15 19:39:08,062 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-15 19:39:08,962 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-15 19:39:09,244 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-15 19:39:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:09,330 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-15 19:39:09,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-15 19:39:09,330 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 19:39:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:39:09,338 INFO L225 Difference]: With dead ends: 1437 [2020-10-15 19:39:09,338 INFO L226 Difference]: Without dead ends: 1424 [2020-10-15 19:39:09,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 19:39:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-15 19:39:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-15 19:39:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-15 19:39:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-15 19:39:09,366 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-15 19:39:09,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:09,366 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-15 19:39:09,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:39:09,366 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-15 19:39:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:39:09,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:09,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:09,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 19:39:09,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:39:09,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:09,370 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-15 19:39:09,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:09,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868876413] [2020-10-15 19:39:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:09,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868876413] [2020-10-15 19:39:09,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:39:09,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 19:39:09,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913666455] [2020-10-15 19:39:09,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:39:09,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:39:09,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:39:09,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:39:09,710 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-15 19:39:10,468 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-15 19:39:10,600 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-15 19:39:10,908 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-15 19:39:11,687 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-15 19:39:11,973 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-15 19:39:12,164 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-15 19:39:12,771 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-15 19:39:13,038 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-15 19:39:13,672 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-15 19:39:13,852 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-15 19:39:14,013 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-15 19:39:15,027 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-15 19:39:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:15,318 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-15 19:39:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-15 19:39:15,318 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 19:39:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:39:15,326 INFO L225 Difference]: With dead ends: 1438 [2020-10-15 19:39:15,326 INFO L226 Difference]: Without dead ends: 1419 [2020-10-15 19:39:15,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-15 19:39:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-15 19:39:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-15 19:39:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-15 19:39:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-15 19:39:15,351 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-15 19:39:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:15,351 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-15 19:39:15,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:39:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-15 19:39:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:39:15,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:15,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:15,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 19:39:15,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:39:15,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-15 19:39:15,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:15,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697333537] [2020-10-15 19:39:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:15,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697333537] [2020-10-15 19:39:15,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:39:15,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 19:39:15,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163815370] [2020-10-15 19:39:15,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:39:15,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:39:15,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:39:15,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:39:15,774 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-15 19:39:16,467 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-15 19:39:16,607 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-15 19:39:16,786 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-15 19:39:16,963 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-15 19:39:17,181 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-15 19:39:17,516 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-15 19:39:17,792 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-15 19:39:17,992 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-15 19:39:18,169 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-15 19:39:18,378 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-15 19:39:18,642 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-15 19:39:18,831 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-15 19:39:19,047 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-15 19:39:19,233 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-15 19:39:19,454 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-15 19:39:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:19,509 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-15 19:39:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 19:39:19,509 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-15 19:39:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:39:19,517 INFO L225 Difference]: With dead ends: 1720 [2020-10-15 19:39:19,518 INFO L226 Difference]: Without dead ends: 1702 [2020-10-15 19:39:19,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 19:39:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-15 19:39:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-15 19:39:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-15 19:39:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-15 19:39:19,545 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-15 19:39:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:19,545 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-15 19:39:19,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:39:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-15 19:39:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:39:19,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:19,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:19,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 19:39:19,549 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:39:19,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:19,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-15 19:39:19,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:19,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265592024] [2020-10-15 19:39:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:39:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:39:20,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265592024] [2020-10-15 19:39:20,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:39:20,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 19:39:20,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876123704] [2020-10-15 19:39:20,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:39:20,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:39:20,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:39:20,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:39:20,120 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-15 19:39:20,359 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-15 19:39:20,524 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-15 19:39:20,798 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-15 19:39:21,003 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-15 19:39:21,323 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-15 19:39:21,594 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-15 19:39:22,026 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-15 19:39:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:39:22,868 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-15 19:39:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 19:39:22,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-15 19:39:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:39:22,876 INFO L225 Difference]: With dead ends: 1246 [2020-10-15 19:39:22,876 INFO L226 Difference]: Without dead ends: 1230 [2020-10-15 19:39:22,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:39:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-15 19:39:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-15 19:39:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-15 19:39:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-15 19:39:22,899 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-15 19:39:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:39:22,900 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-15 19:39:22,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:39:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-15 19:39:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 19:39:22,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:39:22,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:39:22,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 19:39:22,903 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 19:39:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:39:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-15 19:39:22,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:39:22,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814548436] [2020-10-15 19:39:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:39:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:39:22,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:39:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 19:39:22,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 19:39:22,959 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 19:39:22,959 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 19:39:22,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 19:39:23,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:39:23 BasicIcfg [2020-10-15 19:39:23,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 19:39:23,009 INFO L168 Benchmark]: Toolchain (without parser) took 35185.16 ms. Allocated memory was 254.8 MB in the beginning and 641.7 MB in the end (delta: 386.9 MB). Free memory was 209.1 MB in the beginning and 562.7 MB in the end (delta: -353.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 14.2 GB. [2020-10-15 19:39:23,010 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 19:39:23,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.50 ms. Allocated memory was 254.8 MB in the beginning and 325.1 MB in the end (delta: 70.3 MB). Free memory was 209.1 MB in the beginning and 300.2 MB in the end (delta: -91.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-15 19:39:23,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 325.1 MB. Free memory was 300.2 MB in the beginning and 296.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.2 GB. [2020-10-15 19:39:23,012 INFO L168 Benchmark]: Boogie Preprocessor took 17.98 ms. Allocated memory is still 325.1 MB. Free memory is still 296.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 19:39:23,012 INFO L168 Benchmark]: RCFGBuilder took 289.73 ms. Allocated memory is still 325.1 MB. Free memory was 296.5 MB in the beginning and 277.1 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 14.2 GB. [2020-10-15 19:39:23,013 INFO L168 Benchmark]: TraceAbstraction took 34500.07 ms. Allocated memory was 325.1 MB in the beginning and 641.7 MB in the end (delta: 316.7 MB). Free memory was 274.6 MB in the beginning and 562.7 MB in the end (delta: -288.2 MB). Peak memory consumption was 28.5 MB. Max. memory is 14.2 GB. [2020-10-15 19:39:23,016 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 339.50 ms. Allocated memory was 254.8 MB in the beginning and 325.1 MB in the end (delta: 70.3 MB). Free memory was 209.1 MB in the beginning and 300.2 MB in the end (delta: -91.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 325.1 MB. Free memory was 300.2 MB in the beginning and 296.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 17.98 ms. Allocated memory is still 325.1 MB. Free memory is still 296.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 289.73 ms. Allocated memory is still 325.1 MB. Free memory was 296.5 MB in the beginning and 277.1 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 34500.07 ms. Allocated memory was 325.1 MB in the beginning and 641.7 MB in the end (delta: 316.7 MB). Free memory was 274.6 MB in the beginning and 562.7 MB in the end (delta: -288.2 MB). Peak memory consumption was 28.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 719 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 81 PlacesBefore, 39 PlacesAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 4010 MoverChecksTotal - CounterExampleResult [Line: 37]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int counter = 0; [L23] 0 int val = 0; [L25] 0 pthread_t first_thread_id; [L26] 0 pthread_t second_thread_id; [L27] 0 pthread_t third_thread_id; [L29] FCALL, FORK 0 pthread_create(&first_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={8:0}, n={8:0}, x={8:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L17] 1 *x = ++counter [L18] 1 return 0; [L17] 2 *x = ++counter [L18] 2 return 0; [L33] FCALL, JOIN 1 pthread_join(first_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 23.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1050occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 4035 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 119808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 incorrect! Received shutdown request...