/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:02:32,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:02:32,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:02:32,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:02:32,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:02:32,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:02:32,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:02:32,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:02:32,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:02:32,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:02:33,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:02:33,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:02:33,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:02:33,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:02:33,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:02:33,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:02:33,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:02:33,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:02:33,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:02:33,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:02:33,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:02:33,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:02:33,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:02:33,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:02:33,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 14:02:33,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 14:02:33,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 14:02:33,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 14:02:33,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 14:02:33,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 14:02:33,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:02:33,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:02:33,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:02:33,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:02:33,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:02:33,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:02:33,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:02:33,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:02:33,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:02:33,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:02:33,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:02:33,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 14:02:33,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:02:33,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:02:33,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:02:33,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:02:33,068 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:02:33,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:02:33,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:02:33,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:02:33,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:02:33,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:02:33,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:02:33,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:02:33,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:02:33,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:02:33,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:02:33,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:02:33,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:02:33,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:02:33,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:02:33,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:02:33,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:02:33,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:02:33,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:02:33,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:02:33,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:02:33,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 14:02:33,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:02:33,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 14:02:33,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 14:02:33,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:02:33,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:02:33,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:02:33,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:02:33,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:02:33,396 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:02:33,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-09 14:02:33,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7fdc60a/79691d42836c4221b94795f695a9882e/FLAGda8ca18df [2020-10-09 14:02:33,962 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:02:33,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-10-09 14:02:33,963 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-09 14:02:33,963 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-09 14:02:34,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7fdc60a/79691d42836c4221b94795f695a9882e/FLAGda8ca18df [2020-10-09 14:02:34,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad7fdc60a/79691d42836c4221b94795f695a9882e [2020-10-09 14:02:34,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:02:34,343 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:02:34,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:02:34,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:02:34,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:02:34,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6180554f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34, skipping insertion in model container [2020-10-09 14:02:34,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:02:34,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:02:34,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:02:34,652 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:02:34,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:02:34,682 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:02:34,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34 WrapperNode [2020-10-09 14:02:34,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:02:34,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:02:34,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:02:34,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:02:34,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:02:34,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:02:34,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:02:34,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:02:34,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (1/1) ... [2020-10-09 14:02:34,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:02:34,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:02:34,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:02:34,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:02:34,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (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 [2020-10-09 14:02:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-09 14:02:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-09 14:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:02:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 14:02:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 14:02:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:02:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:02:34,800 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:02:35,067 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:02:35,068 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-09 14:02:35,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:02:35 BoogieIcfgContainer [2020-10-09 14:02:35,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:02:35,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:02:35,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:02:35,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:02:35,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:02:34" (1/3) ... [2020-10-09 14:02:35,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc0cbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:02:35, skipping insertion in model container [2020-10-09 14:02:35,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:02:34" (2/3) ... [2020-10-09 14:02:35,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc0cbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:02:35, skipping insertion in model container [2020-10-09 14:02:35,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:02:35" (3/3) ... [2020-10-09 14:02:35,080 INFO L111 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-10-09 14:02:35,093 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 14:02:35,094 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:02:35,102 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 14:02:35,103 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:02:35,142 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,143 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,143 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,143 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,144 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,144 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,144 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,144 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,144 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,145 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,145 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,145 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,146 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,146 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,146 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,146 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,147 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,147 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,147 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,147 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,148 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,148 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,148 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,148 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,149 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,149 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,149 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,149 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,150 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,151 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,151 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,151 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,151 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,151 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,152 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,152 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,152 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,152 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,153 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,153 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,153 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,153 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,157 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,158 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,158 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,158 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,158 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,159 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,159 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,165 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,165 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,165 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,165 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,166 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,166 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,166 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,170 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,171 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,171 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,171 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:02:35,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 14:02:35,224 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:02:35,224 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 14:02:35,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:02:35,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:02:35,225 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:02:35,225 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:02:35,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:02:35,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:02:35,240 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 14:02:35,242 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-09 14:02:35,244 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow [2020-10-09 14:02:35,246 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-10-09 14:02:35,310 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-10-09 14:02:35,310 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-09 14:02:35,316 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. [2020-10-09 14:02:35,324 INFO L117 LiptonReduction]: Number of co-enabled transitions 1008 [2020-10-09 14:02:36,761 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-09 14:02:36,872 INFO L132 LiptonReduction]: Checked pairs total: 4010 [2020-10-09 14:02:36,872 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-09 14:02:36,879 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-10-09 14:02:36,908 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-09 14:02:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-09 14:02:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:36,926 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:36,927 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:36,928 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:36,934 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-10-09 14:02:36,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:36,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142962170] [2020-10-09 14:02:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:37,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142962170] [2020-10-09 14:02:37,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:37,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-09 14:02:37,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771463602] [2020-10-09 14:02:37,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 14:02:37,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:37,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 14:02:37,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-09 14:02:37,640 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 12 states. [2020-10-09 14:02:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:38,835 INFO L93 Difference]: Finished difference Result 748 states and 1901 transitions. [2020-10-09 14:02:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 14:02:38,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-09 14:02:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:38,863 INFO L225 Difference]: With dead ends: 748 [2020-10-09 14:02:38,863 INFO L226 Difference]: Without dead ends: 740 [2020-10-09 14:02:38,865 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:02:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-09 14:02:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487. [2020-10-09 14:02:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-09 14:02:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions. [2020-10-09 14:02:38,955 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25 [2020-10-09 14:02:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:38,956 INFO L481 AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions. [2020-10-09 14:02:38,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 14:02:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions. [2020-10-09 14:02:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:38,962 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:38,962 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:38,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 14:02:38,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-10-09 14:02:38,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:38,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812992169] [2020-10-09 14:02:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:39,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812992169] [2020-10-09 14:02:39,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:39,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-09 14:02:39,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220693311] [2020-10-09 14:02:39,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 14:02:39,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:39,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 14:02:39,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-09 14:02:39,548 INFO L87 Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states. [2020-10-09 14:02:40,977 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-09 14:02:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:42,905 INFO L93 Difference]: Finished difference Result 1252 states and 3200 transitions. [2020-10-09 14:02:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-09 14:02:42,905 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-10-09 14:02:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:42,914 INFO L225 Difference]: With dead ends: 1252 [2020-10-09 14:02:42,914 INFO L226 Difference]: Without dead ends: 1243 [2020-10-09 14:02:42,916 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 14:02:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-10-09 14:02:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560. [2020-10-09 14:02:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-09 14:02:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions. [2020-10-09 14:02:42,955 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25 [2020-10-09 14:02:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:42,955 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions. [2020-10-09 14:02:42,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 14:02:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions. [2020-10-09 14:02:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:42,958 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:42,958 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:42,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 14:02:42,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-10-09 14:02:42,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:42,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999773919] [2020-10-09 14:02:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:43,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999773919] [2020-10-09 14:02:43,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:43,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-09 14:02:43,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20201770] [2020-10-09 14:02:43,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:02:43,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:43,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:02:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-09 14:02:43,577 INFO L87 Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states. [2020-10-09 14:02:44,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:44,540 INFO L93 Difference]: Finished difference Result 683 states and 1739 transitions. [2020-10-09 14:02:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 14:02:44,541 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-09 14:02:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:44,548 INFO L225 Difference]: With dead ends: 683 [2020-10-09 14:02:44,548 INFO L226 Difference]: Without dead ends: 675 [2020-10-09 14:02:44,549 INFO L673 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 [2020-10-09 14:02:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-09 14:02:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639. [2020-10-09 14:02:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-09 14:02:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions. [2020-10-09 14:02:44,580 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25 [2020-10-09 14:02:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:44,581 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions. [2020-10-09 14:02:44,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:02:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions. [2020-10-09 14:02:44,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:44,583 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:44,584 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:44,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 14:02:44,585 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:44,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:44,585 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-10-09 14:02:44,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:44,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632368734] [2020-10-09 14:02:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:45,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632368734] [2020-10-09 14:02:45,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:45,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-09 14:02:45,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119935183] [2020-10-09 14:02:45,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:02:45,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:45,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:02:45,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:02:45,263 INFO L87 Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states. [2020-10-09 14:02:46,955 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-09 14:02:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:49,065 INFO L93 Difference]: Finished difference Result 1378 states and 3442 transitions. [2020-10-09 14:02:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-09 14:02:49,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-09 14:02:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:49,075 INFO L225 Difference]: With dead ends: 1378 [2020-10-09 14:02:49,075 INFO L226 Difference]: Without dead ends: 1360 [2020-10-09 14:02:49,077 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=372, Invalid=1980, Unknown=0, NotChecked=0, Total=2352 [2020-10-09 14:02:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-09 14:02:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727. [2020-10-09 14:02:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-09 14:02:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions. [2020-10-09 14:02:49,115 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25 [2020-10-09 14:02:49,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:49,116 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions. [2020-10-09 14:02:49,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:02:49,116 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions. [2020-10-09 14:02:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:49,118 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:49,118 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:49,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 14:02:49,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:49,119 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-10-09 14:02:49,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:49,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90470729] [2020-10-09 14:02:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:49,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90470729] [2020-10-09 14:02:49,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:49,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-09 14:02:49,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211124987] [2020-10-09 14:02:49,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 14:02:49,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:49,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 14:02:49,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-09 14:02:49,250 INFO L87 Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states. [2020-10-09 14:02:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:49,447 INFO L93 Difference]: Finished difference Result 912 states and 2286 transitions. [2020-10-09 14:02:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 14:02:49,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-09 14:02:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:49,454 INFO L225 Difference]: With dead ends: 912 [2020-10-09 14:02:49,454 INFO L226 Difference]: Without dead ends: 773 [2020-10-09 14:02:49,454 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:02:49,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-09 14:02:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704. [2020-10-09 14:02:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-09 14:02:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions. [2020-10-09 14:02:49,472 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25 [2020-10-09 14:02:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:49,472 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions. [2020-10-09 14:02:49,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 14:02:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions. [2020-10-09 14:02:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:49,474 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:49,475 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:49,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 14:02:49,475 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:49,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-10-09 14:02:49,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:49,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080283635] [2020-10-09 14:02:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:50,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080283635] [2020-10-09 14:02:50,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:50,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-09 14:02:50,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243821332] [2020-10-09 14:02:50,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-09 14:02:50,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:50,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-09 14:02:50,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-09 14:02:50,058 INFO L87 Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states. [2020-10-09 14:02:51,301 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-09 14:02:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:52,221 INFO L93 Difference]: Finished difference Result 1088 states and 2765 transitions. [2020-10-09 14:02:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 14:02:52,222 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-09 14:02:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:52,229 INFO L225 Difference]: With dead ends: 1088 [2020-10-09 14:02:52,229 INFO L226 Difference]: Without dead ends: 1082 [2020-10-09 14:02:52,230 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 14:02:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-09 14:02:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771. [2020-10-09 14:02:52,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-09 14:02:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions. [2020-10-09 14:02:52,254 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25 [2020-10-09 14:02:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:52,255 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions. [2020-10-09 14:02:52,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-09 14:02:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions. [2020-10-09 14:02:52,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:52,257 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:52,257 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:52,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 14:02:52,258 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:52,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:52,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-10-09 14:02:52,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:52,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897306035] [2020-10-09 14:02:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:52,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897306035] [2020-10-09 14:02:52,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:52,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-09 14:02:52,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190357074] [2020-10-09 14:02:52,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:02:52,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:52,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:02:52,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:02:52,678 INFO L87 Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states. [2020-10-09 14:02:53,312 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-10-09 14:02:53,602 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-09 14:02:53,745 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-09 14:02:54,161 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-09 14:02:54,531 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-10-09 14:02:54,651 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-09 14:02:54,820 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-09 14:02:54,957 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-09 14:02:55,150 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-09 14:02:55,300 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-09 14:02:55,522 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-09 14:02:55,755 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-09 14:02:56,110 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-10-09 14:02:56,510 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-09 14:02:56,651 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-09 14:02:56,841 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-09 14:02:57,007 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-09 14:02:57,383 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-09 14:02:57,624 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-09 14:02:57,853 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-09 14:02:58,061 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-09 14:02:58,471 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-10-09 14:02:58,811 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-09 14:02:59,199 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-09 14:02:59,543 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-09 14:02:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:59,646 INFO L93 Difference]: Finished difference Result 1437 states and 3539 transitions. [2020-10-09 14:02:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-09 14:02:59,647 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-09 14:02:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:59,655 INFO L225 Difference]: With dead ends: 1437 [2020-10-09 14:02:59,656 INFO L226 Difference]: Without dead ends: 1424 [2020-10-09 14:02:59,658 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-10-09 14:02:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-10-09 14:02:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872. [2020-10-09 14:02:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-09 14:02:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions. [2020-10-09 14:02:59,687 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25 [2020-10-09 14:02:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:59,687 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions. [2020-10-09 14:02:59,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:02:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions. [2020-10-09 14:02:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:02:59,692 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:59,693 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:59,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 14:02:59,693 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:59,693 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-10-09 14:02:59,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:59,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771412087] [2020-10-09 14:02:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:03:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:03:00,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771412087] [2020-10-09 14:03:00,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:03:00,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-09 14:03:00,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732544217] [2020-10-09 14:03:00,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:03:00,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:03:00,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:03:00,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:03:00,088 INFO L87 Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states. [2020-10-09 14:03:00,711 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-10-09 14:03:00,943 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-09 14:03:01,092 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-09 14:03:01,510 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-09 14:03:01,997 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-09 14:03:02,153 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-09 14:03:02,467 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-09 14:03:02,608 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-09 14:03:02,819 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-09 14:03:03,039 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-09 14:03:03,391 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-10-09 14:03:03,793 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-09 14:03:03,926 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-09 14:03:04,119 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-09 14:03:04,275 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-09 14:03:04,539 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-09 14:03:04,885 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-09 14:03:05,108 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-09 14:03:05,308 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-09 14:03:06,210 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-09 14:03:06,630 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-09 14:03:06,829 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-09 14:03:06,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:03:06,998 INFO L93 Difference]: Finished difference Result 1438 states and 3539 transitions. [2020-10-09 14:03:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-09 14:03:06,999 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-09 14:03:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:03:07,006 INFO L225 Difference]: With dead ends: 1438 [2020-10-09 14:03:07,007 INFO L226 Difference]: Without dead ends: 1419 [2020-10-09 14:03:07,008 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-10-09 14:03:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2020-10-09 14:03:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863. [2020-10-09 14:03:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-09 14:03:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions. [2020-10-09 14:03:07,034 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25 [2020-10-09 14:03:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:03:07,034 INFO L481 AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions. [2020-10-09 14:03:07,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:03:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions. [2020-10-09 14:03:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:03:07,036 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:03:07,036 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:03:07,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 14:03:07,037 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:03:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:03:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-10-09 14:03:07,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:03:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525538738] [2020-10-09 14:03:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:03:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:03:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:03:07,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525538738] [2020-10-09 14:03:07,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:03:07,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-09 14:03:07,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140831014] [2020-10-09 14:03:07,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:03:07,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:03:07,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:03:07,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:03:07,494 INFO L87 Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states. [2020-10-09 14:03:08,045 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-09 14:03:08,191 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-09 14:03:08,388 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-09 14:03:08,580 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-09 14:03:08,800 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-09 14:03:09,032 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-09 14:03:09,318 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-09 14:03:09,761 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-09 14:03:09,906 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-09 14:03:10,117 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-09 14:03:10,369 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-09 14:03:10,599 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-09 14:03:10,868 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-09 14:03:11,204 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-09 14:03:11,436 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-09 14:03:11,701 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-09 14:03:11,931 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-09 14:03:12,202 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-09 14:03:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:03:12,266 INFO L93 Difference]: Finished difference Result 1720 states and 4208 transitions. [2020-10-09 14:03:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-09 14:03:12,267 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-10-09 14:03:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:03:12,274 INFO L225 Difference]: With dead ends: 1720 [2020-10-09 14:03:12,274 INFO L226 Difference]: Without dead ends: 1702 [2020-10-09 14:03:12,275 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-10-09 14:03:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-09 14:03:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940. [2020-10-09 14:03:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-09 14:03:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions. [2020-10-09 14:03:12,306 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25 [2020-10-09 14:03:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:03:12,306 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions. [2020-10-09 14:03:12,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:03:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions. [2020-10-09 14:03:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:03:12,309 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:03:12,309 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:03:12,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 14:03:12,310 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:03:12,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:03:12,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-10-09 14:03:12,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:03:12,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288427831] [2020-10-09 14:03:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:03:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:03:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:03:12,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288427831] [2020-10-09 14:03:12,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:03:12,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-09 14:03:12,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155983796] [2020-10-09 14:03:12,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 14:03:12,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:03:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 14:03:12,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-09 14:03:12,989 INFO L87 Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states. [2020-10-09 14:03:13,272 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-10-09 14:03:13,478 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-09 14:03:13,818 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-09 14:03:14,071 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-09 14:03:14,481 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-09 14:03:14,839 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-09 14:03:15,412 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-09 14:03:15,860 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-09 14:03:16,183 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-09 14:03:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:03:16,475 INFO L93 Difference]: Finished difference Result 1246 states and 3165 transitions. [2020-10-09 14:03:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 14:03:16,476 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-10-09 14:03:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:03:16,483 INFO L225 Difference]: With dead ends: 1246 [2020-10-09 14:03:16,483 INFO L226 Difference]: Without dead ends: 1230 [2020-10-09 14:03:16,483 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 14:03:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-09 14:03:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050. [2020-10-09 14:03:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-09 14:03:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions. [2020-10-09 14:03:16,509 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25 [2020-10-09 14:03:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:03:16,509 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions. [2020-10-09 14:03:16,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 14:03:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions. [2020-10-09 14:03:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-09 14:03:16,512 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:03:16,512 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:03:16,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 14:03:16,512 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:03:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:03:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-10-09 14:03:16,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:03:16,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897061238] [2020-10-09 14:03:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:03:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 14:03:16,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 14:03:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 14:03:16,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 14:03:16,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-09 14:03:16,567 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 14:03:16,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-09 14:03:16,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:03:16 BasicIcfg [2020-10-09 14:03:16,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:03:16,621 INFO L168 Benchmark]: Toolchain (without parser) took 42278.29 ms. Allocated memory was 249.6 MB in the beginning and 622.9 MB in the end (delta: 373.3 MB). Free memory was 204.5 MB in the beginning and 432.4 MB in the end (delta: -227.9 MB). Peak memory consumption was 145.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:03:16,621 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:03:16,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.02 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 204.5 MB in the beginning and 284.1 MB in the end (delta: -79.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 14.2 GB. [2020-10-09 14:03:16,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.18 ms. Allocated memory is still 309.9 MB. Free memory was 284.1 MB in the beginning and 281.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:03:16,623 INFO L168 Benchmark]: Boogie Preprocessor took 19.87 ms. Allocated memory is still 309.9 MB. Free memory is still 281.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:03:16,624 INFO L168 Benchmark]: RCFGBuilder took 330.32 ms. Allocated memory is still 309.9 MB. Free memory was 279.0 MB in the beginning and 261.6 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:03:16,624 INFO L168 Benchmark]: TraceAbstraction took 41546.99 ms. Allocated memory was 309.9 MB in the beginning and 622.9 MB in the end (delta: 313.0 MB). Free memory was 261.6 MB in the beginning and 432.4 MB in the end (delta: -170.8 MB). Peak memory consumption was 142.2 MB. Max. memory is 14.2 GB. [2020-10-09 14:03:16,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 339.02 ms. Allocated memory was 249.6 MB in the beginning and 309.9 MB in the end (delta: 60.3 MB). Free memory was 204.5 MB in the beginning and 284.1 MB in the end (delta: -79.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 36.18 ms. Allocated memory is still 309.9 MB. Free memory was 284.1 MB in the beginning and 281.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 19.87 ms. Allocated memory is still 309.9 MB. Free memory is still 281.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 330.32 ms. Allocated memory is still 309.9 MB. Free memory was 279.0 MB in the beginning and 261.6 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 41546.99 ms. Allocated memory was 309.9 MB in the beginning and 622.9 MB in the end (delta: 313.0 MB). Free memory was 261.6 MB in the beginning and 432.4 MB in the end (delta: -170.8 MB). Peak memory consumption was 142.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 719 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 81 PlacesBefore, 39 PlacesAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 4010 MoverChecksTotal - CounterExampleResult [Line: 37]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int counter = 0; [L23] 0 int val = 0; [L25] 0 pthread_t first_thread_id; [L26] 0 pthread_t second_thread_id; [L27] 0 pthread_t third_thread_id; [L29] FCALL, FORK 0 pthread_create(&first_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={8:0}, n={8:0}, x={8:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L17] 1 *x = ++counter [L18] 1 return 0; [L17] 2 *x = ++counter [L18] 2 return 0; [L33] FCALL, JOIN 1 pthread_join(first_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 28.9s 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, 4.7s 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...