/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 0.1.25-11af1e5 [2020-10-11 16:11:12,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:11:12,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:11:12,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:11:12,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:11:12,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:11:12,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:11:12,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:11:12,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:11:12,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:11:12,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:11:12,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:11:12,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:11:12,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:11:12,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:11:12,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:11:12,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:11:12,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:11:12,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:11:12,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:11:12,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:11:12,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:11:12,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:11:12,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:11:12,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 16:11:12,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 16:11:12,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 16:11:12,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 16:11:12,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 16:11:12,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 16:11:12,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:11:12,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:11:12,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:11:12,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:11:12,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:11:12,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:11:12,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:11:12,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:11:12,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:11:12,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:11:12,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:11:12,895 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 [2020-10-11 16:11:12,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:11:12,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:11:12,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:11:12,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:11:12,919 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:11:12,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:11:12,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:11:12,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:11:12,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:11:12,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:11:12,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:11:12,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:11:12,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:11:12,921 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:11:12,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:11:12,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:11:12,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:11:12,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:11:12,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:11:12,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:11:12,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:11:12,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:11:12,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:11:12,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:11:12,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:11:12,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:11:12,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:11:12,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 16:11:12,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 16:11:12,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:11:13,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:11:13,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:11:13,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:11:13,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:11:13,229 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:11:13,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-11 16:11:13,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f094423eb/47918405eeb14b86b7f6f87e522125e6/FLAGbfb411c24 [2020-10-11 16:11:13,721 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:11:13,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-11 16:11:13,722 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:11:13,723 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:11:13,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f094423eb/47918405eeb14b86b7f6f87e522125e6/FLAGbfb411c24 [2020-10-11 16:11:14,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f094423eb/47918405eeb14b86b7f6f87e522125e6 [2020-10-11 16:11:14,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:11:14,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:11:14,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:11:14,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:11:14,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:11:14,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aca306c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14, skipping insertion in model container [2020-10-11 16:11:14,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:11:14,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:11:14,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:11:14,296 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:11:14,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:11:14,401 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:11:14,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14 WrapperNode [2020-10-11 16:11:14,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:11:14,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:11:14,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:11:14,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:11:14,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:11:14,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:11:14,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:11:14,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:11:14,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (1/1) ... [2020-10-11 16:11:14,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:11:14,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:11:14,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:11:14,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:11:14,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (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 [2020-10-11 16:11:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:11:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-11 16:11:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-11 16:11:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:11:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:11:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:11:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 16:11:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:11:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:11:14,524 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:11:14,782 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:11:14,783 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-11 16:11:14,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:11:14 BoogieIcfgContainer [2020-10-11 16:11:14,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:11:14,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:11:14,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:11:14,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:11:14,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:11:14" (1/3) ... [2020-10-11 16:11:14,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6385a53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:11:14, skipping insertion in model container [2020-10-11 16:11:14,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:14" (2/3) ... [2020-10-11 16:11:14,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6385a53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:11:14, skipping insertion in model container [2020-10-11 16:11:14,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:11:14" (3/3) ... [2020-10-11 16:11:14,794 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-11 16:11:14,811 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 16:11:14,811 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:11:14,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 16:11:14,822 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:11:14,880 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,881 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,881 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,881 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,882 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,882 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,882 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,882 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,883 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,883 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,883 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,883 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,884 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,887 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,887 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,888 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,888 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,888 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,888 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,889 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,889 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,893 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,893 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,894 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,894 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,894 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,894 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,895 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,895 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,895 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,896 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,896 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,896 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,896 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,896 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,897 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,897 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,897 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,897 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,898 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,898 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,900 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,900 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,901 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,901 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,911 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,912 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,912 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,912 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,912 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,913 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,913 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,922 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,922 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,922 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,922 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,923 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,923 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,923 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,926 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,927 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,927 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,927 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,927 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,928 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,928 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:14,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 16:11:14,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:11:14,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 16:11:14,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:11:14,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:11:14,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:11:14,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:11:14,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:11:14,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:11:14,998 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 16:11:15,000 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-11 16:11:15,005 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-11 16:11:15,007 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-11 16:11:15,077 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-11 16:11:15,078 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-11 16:11:15,083 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. [2020-10-11 16:11:15,088 INFO L117 LiptonReduction]: Number of co-enabled transitions 1008 [2020-10-11 16:11:16,558 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-11 16:11:16,684 INFO L132 LiptonReduction]: Checked pairs total: 4010 [2020-10-11 16:11:16,684 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-11 16:11:16,692 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-11 16:11:16,724 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-11 16:11:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-11 16:11:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:16,743 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:16,744 INFO L421 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] [2020-10-11 16:11:16,745 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:16,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-11 16:11:16,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:16,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336682880] [2020-10-11 16:11:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:17,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336682880] [2020-10-11 16:11:17,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:17,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 16:11:17,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114329128] [2020-10-11 16:11:17,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 16:11:17,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:17,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 16:11:17,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:11:17,429 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-11 16:11:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:18,514 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-11 16:11:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 16:11:18,517 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-11 16:11:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:18,553 INFO L225 Difference]: With dead ends: 748 [2020-10-11 16:11:18,553 INFO L226 Difference]: Without dead ends: 740 [2020-10-11 16:11:18,555 INFO L673 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 [2020-10-11 16:11:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-11 16:11:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-11 16:11:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-11 16:11:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-11 16:11:18,648 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-11 16:11:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:18,650 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-11 16:11:18,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 16:11:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-11 16:11:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:18,655 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:18,655 INFO L421 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] [2020-10-11 16:11:18,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:11:18,656 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-11 16:11:18,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:18,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956723218] [2020-10-11 16:11:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:19,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956723218] [2020-10-11 16:11:19,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:19,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-11 16:11:19,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221124962] [2020-10-11 16:11:19,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 16:11:19,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:19,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 16:11:19,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-11 16:11:19,217 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-11 16:11:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:22,183 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-11 16:11:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 16:11:22,183 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-11 16:11:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:22,193 INFO L225 Difference]: With dead ends: 1252 [2020-10-11 16:11:22,193 INFO L226 Difference]: Without dead ends: 1243 [2020-10-11 16:11:22,195 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 16:11:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-11 16:11:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-11 16:11:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-11 16:11:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-11 16:11:22,240 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-11 16:11:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:22,241 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-11 16:11:22,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 16:11:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-11 16:11:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:22,243 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:22,244 INFO L421 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] [2020-10-11 16:11:22,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:11:22,244 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:22,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-11 16:11:22,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:22,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445784966] [2020-10-11 16:11:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:22,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445784966] [2020-10-11 16:11:22,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:22,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-11 16:11:22,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095078005] [2020-10-11 16:11:22,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:11:22,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:22,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:11:22,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:11:22,810 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-11 16:11:23,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:23,650 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-11 16:11:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 16:11:23,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-11 16:11:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:23,658 INFO L225 Difference]: With dead ends: 683 [2020-10-11 16:11:23,658 INFO L226 Difference]: Without dead ends: 675 [2020-10-11 16:11:23,659 INFO L673 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 [2020-10-11 16:11:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-11 16:11:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-11 16:11:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-11 16:11:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-11 16:11:23,689 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-11 16:11:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:23,690 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-11 16:11:23,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:11:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-11 16:11:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:23,693 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:23,694 INFO L421 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] [2020-10-11 16:11:23,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 16:11:23,694 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-11 16:11:23,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:23,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009400079] [2020-10-11 16:11:23,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:24,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009400079] [2020-10-11 16:11:24,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:24,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-11 16:11:24,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769918259] [2020-10-11 16:11:24,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 16:11:24,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:24,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 16:11:24,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-11 16:11:24,235 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-11 16:11:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:27,656 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-11 16:11:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-11 16:11:27,657 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-11 16:11:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:27,666 INFO L225 Difference]: With dead ends: 1378 [2020-10-11 16:11:27,666 INFO L226 Difference]: Without dead ends: 1360 [2020-10-11 16:11:27,667 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=372, Invalid=1980, Unknown=0, NotChecked=0, Total=2352 [2020-10-11 16:11:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-11 16:11:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-11 16:11:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-11 16:11:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-11 16:11:27,698 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-11 16:11:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:27,698 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-11 16:11:27,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 16:11:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-11 16:11:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:27,701 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:27,701 INFO L421 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] [2020-10-11 16:11:27,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 16:11:27,701 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:27,702 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-11 16:11:27,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:27,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130492839] [2020-10-11 16:11:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:27,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130492839] [2020-10-11 16:11:27,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:27,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 16:11:27,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865221595] [2020-10-11 16:11:27,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 16:11:27,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:27,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 16:11:27,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:11:27,820 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-11 16:11:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:27,987 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-11 16:11:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 16:11:27,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-11 16:11:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:27,995 INFO L225 Difference]: With dead ends: 912 [2020-10-11 16:11:27,996 INFO L226 Difference]: Without dead ends: 773 [2020-10-11 16:11:27,996 INFO L673 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 [2020-10-11 16:11:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-11 16:11:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-11 16:11:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-11 16:11:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-11 16:11:28,015 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-11 16:11:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:28,015 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-11 16:11:28,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 16:11:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-11 16:11:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:28,017 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:28,017 INFO L421 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] [2020-10-11 16:11:28,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 16:11:28,018 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:28,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-11 16:11:28,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:28,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465354198] [2020-10-11 16:11:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:28,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465354198] [2020-10-11 16:11:28,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:28,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-11 16:11:28,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646132785] [2020-10-11 16:11:28,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 16:11:28,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:28,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 16:11:28,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-11 16:11:28,528 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-11 16:11:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:30,453 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-11 16:11:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 16:11:30,454 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-11 16:11:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:30,462 INFO L225 Difference]: With dead ends: 1088 [2020-10-11 16:11:30,462 INFO L226 Difference]: Without dead ends: 1082 [2020-10-11 16:11:30,463 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 16:11:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-11 16:11:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-11 16:11:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-11 16:11:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-11 16:11:30,484 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-11 16:11:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:30,485 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-11 16:11:30,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 16:11:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-11 16:11:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:30,487 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:30,487 INFO L421 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] [2020-10-11 16:11:30,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 16:11:30,488 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-11 16:11:30,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:30,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768947310] [2020-10-11 16:11:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:30,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768947310] [2020-10-11 16:11:30,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:30,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-11 16:11:30,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740612959] [2020-10-11 16:11:30,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 16:11:30,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:30,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 16:11:30,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-11 16:11:30,839 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-11 16:11:31,604 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-11 16:11:32,057 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-11 16:11:32,848 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-11 16:11:33,155 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-11 16:11:33,370 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-11 16:11:33,974 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-11 16:11:34,252 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-11 16:11:34,390 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-11 16:11:34,914 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-11 16:11:35,119 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-11 16:11:35,280 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-11 16:11:36,237 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-11 16:11:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:36,602 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-11 16:11:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-11 16:11:36,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-11 16:11:36,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:36,612 INFO L225 Difference]: With dead ends: 1437 [2020-10-11 16:11:36,612 INFO L226 Difference]: Without dead ends: 1424 [2020-10-11 16:11:36,613 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-11 16:11:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-11 16:11:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-11 16:11:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-11 16:11:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-11 16:11:36,646 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-11 16:11:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:36,646 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-11 16:11:36,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 16:11:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-11 16:11:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:36,652 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:36,652 INFO L421 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] [2020-10-11 16:11:36,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 16:11:36,653 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:36,653 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-11 16:11:36,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:36,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106878096] [2020-10-11 16:11:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:37,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106878096] [2020-10-11 16:11:37,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:37,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-11 16:11:37,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881878095] [2020-10-11 16:11:37,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 16:11:37,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:37,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 16:11:37,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-11 16:11:37,030 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-11 16:11:37,808 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-11 16:11:38,321 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-11 16:11:39,133 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-11 16:11:39,433 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-11 16:11:39,614 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-11 16:11:40,265 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-11 16:11:40,550 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-11 16:11:40,688 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-11 16:11:40,939 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-11 16:11:41,241 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-11 16:11:41,427 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-11 16:11:41,591 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-11 16:11:42,675 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-11 16:11:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:42,990 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-11 16:11:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-11 16:11:42,990 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-11 16:11:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:42,999 INFO L225 Difference]: With dead ends: 1438 [2020-10-11 16:11:42,999 INFO L226 Difference]: Without dead ends: 1419 [2020-10-11 16:11:43,001 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-11 16:11:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-11 16:11:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-11 16:11:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-11 16:11:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-11 16:11:43,027 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-11 16:11:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:43,027 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-11 16:11:43,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 16:11:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-11 16:11:43,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:43,030 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:43,030 INFO L421 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] [2020-10-11 16:11:43,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 16:11:43,030 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-11 16:11:43,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:43,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536180767] [2020-10-11 16:11:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:43,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536180767] [2020-10-11 16:11:43,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:43,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-11 16:11:43,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089322117] [2020-10-11 16:11:43,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 16:11:43,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:43,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 16:11:43,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-11 16:11:43,463 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-11 16:11:44,205 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-11 16:11:44,358 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-11 16:11:44,545 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-11 16:11:44,741 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-11 16:11:44,981 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-11 16:11:45,348 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-11 16:11:45,630 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-11 16:11:45,818 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-11 16:11:46,196 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-11 16:11:46,476 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-11 16:11:46,664 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-11 16:11:46,879 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-11 16:11:47,068 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 16:11:47,288 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 16:11:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:47,341 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-11 16:11:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-11 16:11:47,342 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-11 16:11:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:47,349 INFO L225 Difference]: With dead ends: 1720 [2020-10-11 16:11:47,350 INFO L226 Difference]: Without dead ends: 1702 [2020-10-11 16:11:47,351 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 16:11:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-11 16:11:47,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-11 16:11:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-11 16:11:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-11 16:11:47,379 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-11 16:11:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:47,380 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-11 16:11:47,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 16:11:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-11 16:11:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:47,382 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:47,382 INFO L421 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] [2020-10-11 16:11:47,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 16:11:47,383 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:47,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-11 16:11:47,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:47,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901254794] [2020-10-11 16:11:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:47,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901254794] [2020-10-11 16:11:47,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:47,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-11 16:11:47,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352546560] [2020-10-11 16:11:47,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 16:11:47,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:47,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 16:11:47,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:11:47,946 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-11 16:11:48,171 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-11 16:11:48,337 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-11 16:11:48,608 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-11 16:11:48,813 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-11 16:11:49,153 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-11 16:11:49,422 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-11 16:11:49,852 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-11 16:11:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:50,682 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-11 16:11:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 16:11:50,682 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-11 16:11:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:50,688 INFO L225 Difference]: With dead ends: 1246 [2020-10-11 16:11:50,688 INFO L226 Difference]: Without dead ends: 1230 [2020-10-11 16:11:50,688 INFO L673 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 [2020-10-11 16:11:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-11 16:11:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-11 16:11:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-11 16:11:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-11 16:11:50,713 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-11 16:11:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:50,713 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-11 16:11:50,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 16:11:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-11 16:11:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:11:50,716 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:50,716 INFO L421 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] [2020-10-11 16:11:50,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 16:11:50,716 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-11 16:11:50,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:50,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086276195] [2020-10-11 16:11:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:11:50,731 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:11:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 16:11:50,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 16:11:50,769 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 16:11:50,769 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 16:11:50,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 16:11:50,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:11:50 BasicIcfg [2020-10-11 16:11:50,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:11:50,829 INFO L168 Benchmark]: Toolchain (without parser) took 36742.55 ms. Allocated memory was 244.3 MB in the beginning and 672.1 MB in the end (delta: 427.8 MB). Free memory was 200.0 MB in the beginning and 346.7 MB in the end (delta: -146.7 MB). Peak memory consumption was 281.2 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:50,829 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 244.3 MB. Free memory is still 220.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:11:50,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.17 ms. Allocated memory was 244.3 MB in the beginning and 294.6 MB in the end (delta: 50.3 MB). Free memory was 200.0 MB in the beginning and 269.8 MB in the end (delta: -69.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:50,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.92 ms. Allocated memory is still 294.6 MB. Free memory was 269.8 MB in the beginning and 267.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:50,836 INFO L168 Benchmark]: Boogie Preprocessor took 17.49 ms. Allocated memory is still 294.6 MB. Free memory was 267.3 MB in the beginning and 266.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:50,837 INFO L168 Benchmark]: RCFGBuilder took 330.34 ms. Allocated memory is still 294.6 MB. Free memory was 266.1 MB in the beginning and 248.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:50,837 INFO L168 Benchmark]: TraceAbstraction took 36041.16 ms. Allocated memory was 294.6 MB in the beginning and 672.1 MB in the end (delta: 377.5 MB). Free memory was 246.0 MB in the beginning and 346.7 MB in the end (delta: -100.6 MB). Peak memory consumption was 276.8 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:50,845 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 244.3 MB. Free memory is still 220.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 314.17 ms. Allocated memory was 244.3 MB in the beginning and 294.6 MB in the end (delta: 50.3 MB). Free memory was 200.0 MB in the beginning and 269.8 MB in the end (delta: -69.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 33.92 ms. Allocated memory is still 294.6 MB. Free memory was 269.8 MB in the beginning and 267.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 17.49 ms. Allocated memory is still 294.6 MB. Free memory was 267.3 MB in the beginning and 266.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. * RCFGBuilder took 330.34 ms. Allocated memory is still 294.6 MB. Free memory was 266.1 MB in the beginning and 248.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 36041.16 ms. Allocated memory was 294.6 MB in the beginning and 672.1 MB in the end (delta: 377.5 MB). Free memory was 246.0 MB in the beginning and 346.7 MB in the end (delta: -100.6 MB). Peak memory consumption was 276.8 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: 0.3s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 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: 35.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 28.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 24.2s 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, 4.2s 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...