/usr/bin/java -Xmx8000000000 -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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:34:04,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:34:05,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:34:05,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:34:05,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:34:05,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:34:05,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:34:05,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:34:05,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:34:05,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:34:05,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:34:05,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:34:05,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:34:05,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:34:05,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:34:05,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:34:05,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:34:05,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:34:05,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:34:05,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:34:05,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:34:05,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:34:05,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:34:05,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:34:05,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:34:05,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:34:05,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:34:05,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:34:05,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:34:05,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:34:05,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:34:05,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:34:05,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:34:05,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:34:05,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:34:05,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:34:05,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:34:05,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:34:05,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:34:05,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:34:05,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:34:05,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:34:05,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:34:05,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:34:05,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:34:05,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:34:05,096 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:34:05,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:34:05,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:34:05,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:34:05,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:34:05,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:34:05,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:34:05,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:34:05,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:34:05,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:34:05,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:34:05,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:34:05,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:34:05,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:34:05,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:34:05,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:34:05,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:34:05,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:34:05,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:34:05,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:34:05,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:34:05,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:34:05,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:34:05,101 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:34:05,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:34:05,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:34:05,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:34:05,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:34:05,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:34:05,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:34:05,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-21 23:34:05,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c60c78a1/37aba524dcc4479c8e2d88d09b958f12/FLAGf46b3e7ce [2020-10-21 23:34:06,036 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:34:06,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-21 23:34:06,037 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-21 23:34:06,037 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-21 23:34:06,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c60c78a1/37aba524dcc4479c8e2d88d09b958f12/FLAGf46b3e7ce [2020-10-21 23:34:06,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c60c78a1/37aba524dcc4479c8e2d88d09b958f12 [2020-10-21 23:34:06,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:34:06,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:34:06,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:34:06,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:34:06,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:34:06,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6039ff65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06, skipping insertion in model container [2020-10-21 23:34:06,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:34:06,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:34:06,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:34:06,823 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:34:06,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:34:06,857 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:34:06,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06 WrapperNode [2020-10-21 23:34:06,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:34:06,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:34:06,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:34:06,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:34:06,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:34:06,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:34:06,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:34:06,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:34:06,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (1/1) ... [2020-10-21 23:34:06,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:34:06,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:34:06,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:34:06,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:34:06,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (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 [2020-10-21 23:34:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:34:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-21 23:34:06,990 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-21 23:34:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:34:06,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:34:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 23:34:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:34:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:34:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:34:06,994 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:34:07,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:34:07,291 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-21 23:34:07,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:34:07 BoogieIcfgContainer [2020-10-21 23:34:07,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:34:07,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:34:07,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:34:07,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:34:07,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:34:06" (1/3) ... [2020-10-21 23:34:07,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5131fd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:34:07, skipping insertion in model container [2020-10-21 23:34:07,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:34:06" (2/3) ... [2020-10-21 23:34:07,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5131fd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:34:07, skipping insertion in model container [2020-10-21 23:34:07,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:34:07" (3/3) ... [2020-10-21 23:34:07,306 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-21 23:34:07,322 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:34:07,322 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:34:07,331 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:34:07,333 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:34:07,390 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,390 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,391 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,391 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,392 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,392 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,392 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,392 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,392 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,393 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,393 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,393 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,394 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,394 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,394 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,395 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,395 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,400 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,400 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,401 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,401 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,401 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,401 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,403 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,404 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,404 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,404 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,405 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,405 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,405 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,405 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,406 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,406 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,406 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,406 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,407 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,407 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,407 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,407 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,408 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,408 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,408 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,408 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,409 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,409 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,414 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,414 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,415 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,415 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,415 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,416 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,416 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,423 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,423 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,423 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,424 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,424 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,424 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,425 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,428 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,428 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,429 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,429 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,429 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,429 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,429 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:34:07,446 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2020-10-21 23:34:07,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 23:34:07,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:34:07,488 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:34:07,488 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:34:07,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:34:07,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:34:07,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:34:07,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:34:07,489 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:34:07,508 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:34:07,509 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-21 23:34:07,512 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-21 23:34:07,514 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-21 23:34:07,610 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-21 23:34:07,611 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-21 23:34:07,616 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. [2020-10-21 23:34:07,620 INFO L116 LiptonReduction]: Number of co-enabled transitions 1008 [2020-10-21 23:34:08,855 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-21 23:34:08,991 INFO L131 LiptonReduction]: Checked pairs total: 4010 [2020-10-21 23:34:08,992 INFO L133 LiptonReduction]: Total number of compositions: 43 [2020-10-21 23:34:09,000 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-21 23:34:09,032 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-21 23:34:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-21 23:34:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:09,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:09,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:09,055 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-21 23:34:09,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:09,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399622120] [2020-10-21 23:34:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:09,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399622120] [2020-10-21 23:34:09,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:09,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-21 23:34:09,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080909987] [2020-10-21 23:34:09,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 23:34:09,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 23:34:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-21 23:34:09,817 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-21 23:34:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:10,942 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-21 23:34:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-21 23:34:10,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-21 23:34:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:10,969 INFO L225 Difference]: With dead ends: 748 [2020-10-21 23:34:10,969 INFO L226 Difference]: Without dead ends: 740 [2020-10-21 23:34:10,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-21 23:34:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-21 23:34:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-21 23:34:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-21 23:34:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-21 23:34:11,067 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-21 23:34:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:11,068 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-21 23:34:11,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 23:34:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-21 23:34:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:11,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:11,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:11,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:34:11,075 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:11,076 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-21 23:34:11,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:11,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789388182] [2020-10-21 23:34:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:11,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789388182] [2020-10-21 23:34:11,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:11,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-21 23:34:11,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161212928] [2020-10-21 23:34:11,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 23:34:11,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:11,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 23:34:11,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-21 23:34:11,635 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-21 23:34:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:14,651 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-21 23:34:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-21 23:34:14,652 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-21 23:34:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:14,661 INFO L225 Difference]: With dead ends: 1252 [2020-10-21 23:34:14,662 INFO L226 Difference]: Without dead ends: 1243 [2020-10-21 23:34:14,663 INFO L677 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 [2020-10-21 23:34:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-21 23:34:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-21 23:34:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-21 23:34:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-21 23:34:14,706 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-21 23:34:14,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:14,707 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-21 23:34:14,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 23:34:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-21 23:34:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:14,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:14,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:14,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:34:14,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:14,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-21 23:34:14,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:14,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663023827] [2020-10-21 23:34:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:15,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663023827] [2020-10-21 23:34:15,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:15,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-21 23:34:15,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169681441] [2020-10-21 23:34:15,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 23:34:15,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:15,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 23:34:15,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-21 23:34:15,300 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-21 23:34:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:16,165 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-21 23:34:16,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-21 23:34:16,167 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-21 23:34:16,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:16,173 INFO L225 Difference]: With dead ends: 683 [2020-10-21 23:34:16,173 INFO L226 Difference]: Without dead ends: 675 [2020-10-21 23:34:16,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-21 23:34:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-21 23:34:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-21 23:34:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-21 23:34:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-21 23:34:16,199 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-21 23:34:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:16,199 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-21 23:34:16,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 23:34:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-21 23:34:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:16,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:16,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:16,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:34:16,203 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-21 23:34:16,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:16,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794797327] [2020-10-21 23:34:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:16,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794797327] [2020-10-21 23:34:16,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:16,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-21 23:34:16,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668519923] [2020-10-21 23:34:16,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 23:34:16,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:16,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 23:34:16,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:34:16,720 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-21 23:34:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:20,206 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-21 23:34:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-21 23:34:20,207 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-21 23:34:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:20,217 INFO L225 Difference]: With dead ends: 1378 [2020-10-21 23:34:20,217 INFO L226 Difference]: Without dead ends: 1360 [2020-10-21 23:34:20,218 INFO L677 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 [2020-10-21 23:34:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-21 23:34:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-21 23:34:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-21 23:34:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-21 23:34:20,252 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-21 23:34:20,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:20,253 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-21 23:34:20,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 23:34:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-21 23:34:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:20,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:20,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:20,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:34:20,256 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-21 23:34:20,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:20,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712783173] [2020-10-21 23:34:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:20,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712783173] [2020-10-21 23:34:20,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:20,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-21 23:34:20,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582729406] [2020-10-21 23:34:20,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 23:34:20,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:20,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 23:34:20,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-21 23:34:20,396 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-21 23:34:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:20,592 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-21 23:34:20,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 23:34:20,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-21 23:34:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:20,599 INFO L225 Difference]: With dead ends: 912 [2020-10-21 23:34:20,600 INFO L226 Difference]: Without dead ends: 773 [2020-10-21 23:34:20,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-21 23:34:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-21 23:34:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-21 23:34:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-21 23:34:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-21 23:34:20,621 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-21 23:34:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:20,622 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-21 23:34:20,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 23:34:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-21 23:34:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:20,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:20,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:20,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:34:20,625 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:20,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-21 23:34:20,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:20,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045524157] [2020-10-21 23:34:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:21,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045524157] [2020-10-21 23:34:21,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:21,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-21 23:34:21,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710625607] [2020-10-21 23:34:21,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 23:34:21,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:21,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 23:34:21,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-21 23:34:21,180 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-21 23:34:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:23,181 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-21 23:34:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 23:34:23,187 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-21 23:34:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:23,193 INFO L225 Difference]: With dead ends: 1088 [2020-10-21 23:34:23,194 INFO L226 Difference]: Without dead ends: 1082 [2020-10-21 23:34:23,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:34:23,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-21 23:34:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-21 23:34:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-21 23:34:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-21 23:34:23,220 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-21 23:34:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:23,220 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-21 23:34:23,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 23:34:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-21 23:34:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:23,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:23,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:23,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:34:23,224 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:23,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-21 23:34:23,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:23,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968930747] [2020-10-21 23:34:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:23,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968930747] [2020-10-21 23:34:23,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:23,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-21 23:34:23,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696307252] [2020-10-21 23:34:23,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 23:34:23,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:23,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 23:34:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:34:23,603 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-21 23:34:24,425 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-21 23:34:24,547 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-21 23:34:24,907 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-21 23:34:25,746 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-21 23:34:25,874 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-21 23:34:26,071 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-21 23:34:26,273 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-21 23:34:26,936 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-21 23:34:27,233 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-21 23:34:27,372 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-21 23:34:27,936 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-21 23:34:28,132 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-21 23:34:28,310 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-21 23:34:29,310 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-21 23:34:29,600 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-21 23:34:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:29,697 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-21 23:34:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-21 23:34:29,698 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-21 23:34:29,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:29,707 INFO L225 Difference]: With dead ends: 1437 [2020-10-21 23:34:29,707 INFO L226 Difference]: Without dead ends: 1424 [2020-10-21 23:34:29,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-21 23:34:29,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-21 23:34:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-21 23:34:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-21 23:34:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-21 23:34:29,760 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-21 23:34:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:29,760 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-21 23:34:29,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 23:34:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-21 23:34:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:29,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:29,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:29,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:34:29,764 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:29,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:29,764 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-21 23:34:29,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:29,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850424471] [2020-10-21 23:34:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:30,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850424471] [2020-10-21 23:34:30,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:30,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-21 23:34:30,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385892880] [2020-10-21 23:34:30,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 23:34:30,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 23:34:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:34:30,143 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-21 23:34:30,973 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-21 23:34:31,118 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-21 23:34:31,456 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-21 23:34:32,303 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-21 23:34:32,430 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-21 23:34:32,617 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-21 23:34:32,817 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-21 23:34:33,481 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-21 23:34:33,785 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-21 23:34:33,926 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-21 23:34:34,471 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-21 23:34:34,676 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-21 23:34:34,857 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-21 23:34:36,022 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-21 23:34:36,195 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-21 23:34:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:36,345 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-21 23:34:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-21 23:34:36,346 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-21 23:34:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:36,353 INFO L225 Difference]: With dead ends: 1438 [2020-10-21 23:34:36,353 INFO L226 Difference]: Without dead ends: 1419 [2020-10-21 23:34:36,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-21 23:34:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-21 23:34:36,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-21 23:34:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-21 23:34:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-21 23:34:36,383 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-21 23:34:36,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:36,384 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-21 23:34:36,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 23:34:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-21 23:34:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:36,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:36,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:36,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:34:36,387 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:36,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-21 23:34:36,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:36,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450005375] [2020-10-21 23:34:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:36,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450005375] [2020-10-21 23:34:36,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:36,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-21 23:34:36,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965976560] [2020-10-21 23:34:36,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 23:34:36,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:36,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 23:34:36,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-21 23:34:36,788 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-21 23:34:37,389 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-21 23:34:37,557 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-21 23:34:37,713 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-21 23:34:37,908 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-21 23:34:38,113 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-21 23:34:38,356 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-21 23:34:38,736 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-21 23:34:39,032 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-21 23:34:39,250 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-21 23:34:39,458 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-21 23:34:39,690 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-21 23:34:39,993 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-21 23:34:40,216 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-21 23:34:40,464 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-21 23:34:40,669 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-21 23:34:40,919 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-21 23:34:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:40,979 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-21 23:34:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-21 23:34:40,979 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-21 23:34:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:40,988 INFO L225 Difference]: With dead ends: 1720 [2020-10-21 23:34:40,988 INFO L226 Difference]: Without dead ends: 1702 [2020-10-21 23:34:40,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-10-21 23:34:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-21 23:34:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-21 23:34:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-21 23:34:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-21 23:34:41,022 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-21 23:34:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:41,022 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-21 23:34:41,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 23:34:41,022 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-21 23:34:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:41,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:41,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:41,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 23:34:41,026 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:41,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-21 23:34:41,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:41,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183292691] [2020-10-21 23:34:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:34:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:34:41,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183292691] [2020-10-21 23:34:41,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:34:41,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-21 23:34:41,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241198963] [2020-10-21 23:34:41,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 23:34:41,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:34:41,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 23:34:41,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-21 23:34:41,654 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-21 23:34:41,911 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-21 23:34:42,095 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-21 23:34:42,398 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-21 23:34:42,630 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-21 23:34:42,987 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-21 23:34:43,293 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-21 23:34:43,778 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-21 23:34:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:34:44,707 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-21 23:34:44,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 23:34:44,708 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-21 23:34:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:34:44,714 INFO L225 Difference]: With dead ends: 1246 [2020-10-21 23:34:44,715 INFO L226 Difference]: Without dead ends: 1230 [2020-10-21 23:34:44,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 23:34:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-21 23:34:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-21 23:34:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-21 23:34:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-21 23:34:44,744 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-21 23:34:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:34:44,744 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-21 23:34:44,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 23:34:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-21 23:34:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 23:34:44,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:34:44,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:34:44,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 23:34:44,749 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 23:34:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:34:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-21 23:34:44,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:34:44,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943404766] [2020-10-21 23:34:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:34:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:34:44,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:34:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 23:34:44,782 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 23:34:44,816 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 23:34:44,816 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 23:34:44,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-21 23:34:44,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:34:44 BasicIcfg [2020-10-21 23:34:44,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:34:44,875 INFO L168 Benchmark]: Toolchain (without parser) took 38466.81 ms. Allocated memory was 141.6 MB in the beginning and 489.2 MB in the end (delta: 347.6 MB). Free memory was 100.2 MB in the beginning and 93.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 354.2 MB. Max. memory is 7.1 GB. [2020-10-21 23:34:44,876 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.6 MB. Free memory was 120.4 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-21 23:34:44,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.78 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 99.3 MB in the beginning and 178.1 MB in the end (delta: -78.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-10-21 23:34:44,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.15 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 177.1 MB in the end (delta: 966.0 kB). Peak memory consumption was 966.0 kB. Max. memory is 7.1 GB. [2020-10-21 23:34:44,878 INFO L168 Benchmark]: Boogie Preprocessor took 21.20 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 175.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-21 23:34:44,879 INFO L168 Benchmark]: RCFGBuilder took 377.10 ms. Allocated memory is still 201.9 MB. Free memory was 175.2 MB in the beginning and 158.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-10-21 23:34:44,879 INFO L168 Benchmark]: TraceAbstraction took 37577.84 ms. Allocated memory was 201.9 MB in the beginning and 489.2 MB in the end (delta: 287.3 MB). Free memory was 157.2 MB in the beginning and 93.6 MB in the end (delta: 63.6 MB). Peak memory consumption was 350.9 MB. Max. memory is 7.1 GB. [2020-10-21 23:34:44,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 141.6 MB. Free memory was 120.4 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 443.78 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 99.3 MB in the beginning and 178.1 MB in the end (delta: -78.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.15 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 177.1 MB in the end (delta: 966.0 kB). Peak memory consumption was 966.0 kB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.20 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 175.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 377.10 ms. Allocated memory is still 201.9 MB. Free memory was 175.2 MB in the beginning and 158.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37577.84 ms. Allocated memory was 201.9 MB in the beginning and 489.2 MB in the end (delta: 287.3 MB). Free memory was 157.2 MB in the beginning and 93.6 MB in the end (delta: 63.6 MB). Peak memory consumption was 350.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 512 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 104 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 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: 37.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 30.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 25.4s 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, 4.3s 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...