/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/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 12:53:40,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 12:53:40,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 12:53:40,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 12:53:40,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 12:53:40,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 12:53:40,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 12:53:40,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 12:53:40,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 12:53:40,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 12:53:40,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 12:53:40,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 12:53:40,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 12:53:40,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 12:53:40,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 12:53:40,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 12:53:40,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 12:53:40,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 12:53:40,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 12:53:40,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 12:53:40,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 12:53:40,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 12:53:40,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 12:53:40,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 12:53:40,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 12:53:40,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 12:53:40,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 12:53:40,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 12:53:40,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 12:53:40,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 12:53:40,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 12:53:40,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 12:53:40,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 12:53:40,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 12:53:40,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 12:53:40,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 12:53:40,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 12:53:40,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 12:53:40,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 12:53:40,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 12:53:40,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 12:53:40,949 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 12:53:40,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 12:53:40,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 12:53:40,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 12:53:40,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 12:53:40,972 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 12:53:40,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 12:53:40,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 12:53:40,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 12:53:40,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 12:53:40,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 12:53:40,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 12:53:40,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 12:53:40,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 12:53:40,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 12:53:40,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 12:53:40,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 12:53:40,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 12:53:40,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 12:53:40,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 12:53:40,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 12:53:40,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 12:53:40,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 12:53:40,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 12:53:40,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 12:53:40,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 12:53:40,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 12:53:40,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 12:53:40,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 12:53:40,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 12:53:40,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 12:53:41,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 12:53:41,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 12:53:41,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 12:53:41,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 12:53:41,291 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 12:53:41,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-09 12:53:41,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc51a40fc/e5ec34836b674f7d9f485e883eeaa9b0/FLAG92b677311 [2020-10-09 12:53:41,815 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 12:53:41,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-09 12:53:41,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc51a40fc/e5ec34836b674f7d9f485e883eeaa9b0/FLAG92b677311 [2020-10-09 12:53:42,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc51a40fc/e5ec34836b674f7d9f485e883eeaa9b0 [2020-10-09 12:53:42,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 12:53:42,108 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 12:53:42,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 12:53:42,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 12:53:42,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 12:53:42,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f3e7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42, skipping insertion in model container [2020-10-09 12:53:42,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 12:53:42,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 12:53:42,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:53:42,563 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 12:53:42,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:53:42,804 INFO L208 MainTranslator]: Completed translation [2020-10-09 12:53:42,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42 WrapperNode [2020-10-09 12:53:42,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 12:53:42,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 12:53:42,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 12:53:42,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 12:53:42,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 12:53:42,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 12:53:42,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 12:53:42,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 12:53:42,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (1/1) ... [2020-10-09 12:53:42,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 12:53:42,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 12:53:42,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 12:53:42,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 12:53:42,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (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 12:53:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 12:53:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 12:53:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 12:53:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 12:53:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 12:53:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 12:53:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 12:53:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 12:53:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 12:53:42,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 12:53:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 12:53:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 12:53:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 12:53:42,950 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 12:53:43,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 12:53:43,272 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 12:53:43,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:53:43 BoogieIcfgContainer [2020-10-09 12:53:43,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 12:53:43,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 12:53:43,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 12:53:43,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 12:53:43,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 12:53:42" (1/3) ... [2020-10-09 12:53:43,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea51a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:53:43, skipping insertion in model container [2020-10-09 12:53:43,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:53:42" (2/3) ... [2020-10-09 12:53:43,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea51a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:53:43, skipping insertion in model container [2020-10-09 12:53:43,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:53:43" (3/3) ... [2020-10-09 12:53:43,282 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-10-09 12:53:43,295 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 12:53:43,296 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 12:53:43,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 12:53:43,309 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 12:53:43,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,337 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,337 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,338 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,338 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,339 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,339 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,339 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,340 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,340 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,344 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,344 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,344 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,350 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,350 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,353 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,354 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:53:43,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 12:53:43,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 12:53:43,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 12:53:43,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 12:53:43,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 12:53:43,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 12:53:43,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 12:53:43,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 12:53:43,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 12:53:43,400 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 12:53:43,402 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-09 12:53:43,404 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-09 12:53:43,405 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-09 12:53:43,444 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-09 12:53:43,444 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 12:53:43,449 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 12:53:43,452 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-09 12:53:44,957 INFO L132 LiptonReduction]: Checked pairs total: 2581 [2020-10-09 12:53:44,957 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-09 12:53:44,964 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-09 12:53:44,993 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-09 12:53:44,995 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-09 12:53:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 12:53:45,003 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:45,004 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:45,005 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:45,010 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-09 12:53:45,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:45,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826323413] [2020-10-09 12:53:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:45,247 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 12:53:45,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826323413] [2020-10-09 12:53:45,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:45,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 12:53:45,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408228028] [2020-10-09 12:53:45,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:53:45,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:45,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:53:45,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:45,272 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-09 12:53:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:45,340 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-09 12:53:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:53:45,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-09 12:53:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:45,357 INFO L225 Difference]: With dead ends: 282 [2020-10-09 12:53:45,358 INFO L226 Difference]: Without dead ends: 218 [2020-10-09 12:53:45,359 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:45,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-09 12:53:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-09 12:53:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-09 12:53:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-09 12:53:45,423 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-09 12:53:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:45,424 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-09 12:53:45,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:53:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-09 12:53:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 12:53:45,426 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:45,426 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:45,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 12:53:45,427 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-10-09 12:53:45,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:45,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850900016] [2020-10-09 12:53:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:45,516 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 12:53:45,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850900016] [2020-10-09 12:53:45,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:45,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:53:45,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935129848] [2020-10-09 12:53:45,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:53:45,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:45,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:53:45,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:53:45,520 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-09 12:53:45,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:45,553 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-10-09 12:53:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 12:53:45,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-09 12:53:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:45,556 INFO L225 Difference]: With dead ends: 296 [2020-10-09 12:53:45,556 INFO L226 Difference]: Without dead ends: 200 [2020-10-09 12:53:45,557 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:53:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-09 12:53:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-09 12:53:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-09 12:53:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-10-09 12:53:45,576 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-10-09 12:53:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:45,577 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-10-09 12:53:45,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:53:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-10-09 12:53:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 12:53:45,578 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:45,579 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:45,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 12:53:45,579 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:45,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:45,579 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-10-09 12:53:45,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:45,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878095940] [2020-10-09 12:53:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:45,651 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 12:53:45,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878095940] [2020-10-09 12:53:45,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:45,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:53:45,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325742132] [2020-10-09 12:53:45,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:53:45,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:45,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:53:45,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:53:45,654 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-10-09 12:53:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:45,682 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-10-09 12:53:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:53:45,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-09 12:53:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:45,685 INFO L225 Difference]: With dead ends: 314 [2020-10-09 12:53:45,685 INFO L226 Difference]: Without dead ends: 182 [2020-10-09 12:53:45,686 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:53:45,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-09 12:53:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-10-09 12:53:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-09 12:53:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-10-09 12:53:45,699 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-10-09 12:53:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:45,700 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-10-09 12:53:45,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:53:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-10-09 12:53:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 12:53:45,701 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:45,701 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:45,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 12:53:45,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:45,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-09 12:53:45,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:45,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835825282] [2020-10-09 12:53:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:45,731 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 12:53:45,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835825282] [2020-10-09 12:53:45,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:45,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:53:45,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931007105] [2020-10-09 12:53:45,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:53:45,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:45,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:53:45,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:45,734 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-10-09 12:53:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:45,747 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-10-09 12:53:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:53:45,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-09 12:53:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:45,749 INFO L225 Difference]: With dead ends: 176 [2020-10-09 12:53:45,749 INFO L226 Difference]: Without dead ends: 86 [2020-10-09 12:53:45,749 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-09 12:53:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-09 12:53:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-09 12:53:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-10-09 12:53:45,756 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-10-09 12:53:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:45,756 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-10-09 12:53:45,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:53:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-10-09 12:53:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 12:53:45,757 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:45,757 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:45,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 12:53:45,758 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:45,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:45,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1787778239, now seen corresponding path program 1 times [2020-10-09 12:53:45,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:45,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718532546] [2020-10-09 12:53:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:45,810 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 12:53:45,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718532546] [2020-10-09 12:53:45,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:45,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 12:53:45,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924472371] [2020-10-09 12:53:45,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:53:45,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:45,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:53:45,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:45,812 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand 3 states. [2020-10-09 12:53:45,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:45,822 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-10-09 12:53:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:53:45,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-09 12:53:45,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:45,823 INFO L225 Difference]: With dead ends: 80 [2020-10-09 12:53:45,824 INFO L226 Difference]: Without dead ends: 80 [2020-10-09 12:53:45,824 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:45,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-09 12:53:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-09 12:53:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-09 12:53:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-10-09 12:53:45,830 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-10-09 12:53:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:45,830 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-10-09 12:53:45,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:53:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-10-09 12:53:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 12:53:45,831 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:45,831 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:45,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 12:53:45,831 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:45,832 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-10-09 12:53:45,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:45,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057036470] [2020-10-09 12:53:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:45,889 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 12:53:45,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057036470] [2020-10-09 12:53:45,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:45,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:53:45,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28363882] [2020-10-09 12:53:45,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:53:45,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:45,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:53:45,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:53:45,893 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-10-09 12:53:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:45,913 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-10-09 12:53:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 12:53:45,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-09 12:53:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:45,915 INFO L225 Difference]: With dead ends: 104 [2020-10-09 12:53:45,915 INFO L226 Difference]: Without dead ends: 68 [2020-10-09 12:53:45,915 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:53:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-09 12:53:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-09 12:53:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-09 12:53:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-09 12:53:45,920 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-09 12:53:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:45,920 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-09 12:53:45,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:53:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-09 12:53:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 12:53:45,922 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:45,922 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:45,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 12:53:45,922 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-10-09 12:53:45,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:45,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330081537] [2020-10-09 12:53:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:45,969 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 12:53:45,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330081537] [2020-10-09 12:53:45,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:45,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:53:45,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709732779] [2020-10-09 12:53:45,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:53:45,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:45,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:53:45,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:53:45,971 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-09 12:53:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:46,003 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-09 12:53:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:53:46,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-09 12:53:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:46,005 INFO L225 Difference]: With dead ends: 81 [2020-10-09 12:53:46,005 INFO L226 Difference]: Without dead ends: 59 [2020-10-09 12:53:46,005 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:53:46,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-09 12:53:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-09 12:53:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-09 12:53:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-09 12:53:46,009 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-09 12:53:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:46,009 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-09 12:53:46,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:53:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-09 12:53:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 12:53:46,010 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:46,011 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:46,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 12:53:46,011 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:46,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-10-09 12:53:46,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:46,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347594483] [2020-10-09 12:53:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:46,067 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 12:53:46,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347594483] [2020-10-09 12:53:46,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:46,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:53:46,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028313530] [2020-10-09 12:53:46,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:53:46,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:53:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:53:46,070 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-09 12:53:46,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:46,120 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-09 12:53:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 12:53:46,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-09 12:53:46,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:46,121 INFO L225 Difference]: With dead ends: 60 [2020-10-09 12:53:46,121 INFO L226 Difference]: Without dead ends: 45 [2020-10-09 12:53:46,122 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:53:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-09 12:53:46,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-09 12:53:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-09 12:53:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-09 12:53:46,125 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-09 12:53:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:46,125 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-09 12:53:46,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:53:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-09 12:53:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:53:46,126 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:46,126 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:46,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 12:53:46,127 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:46,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-09 12:53:46,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:46,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718186652] [2020-10-09 12:53:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:46,173 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 12:53:46,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718186652] [2020-10-09 12:53:46,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:46,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 12:53:46,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505770184] [2020-10-09 12:53:46,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 12:53:46,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 12:53:46,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:53:46,175 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-09 12:53:46,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:46,221 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-09 12:53:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 12:53:46,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-09 12:53:46,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:46,222 INFO L225 Difference]: With dead ends: 42 [2020-10-09 12:53:46,222 INFO L226 Difference]: Without dead ends: 36 [2020-10-09 12:53:46,223 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:53:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-09 12:53:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-09 12:53:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-09 12:53:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-09 12:53:46,226 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-09 12:53:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:46,226 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-09 12:53:46,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 12:53:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-09 12:53:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 12:53:46,227 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:53:46,227 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:53:46,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 12:53:46,228 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:53:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:53:46,228 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-09 12:53:46,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:53:46,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865687585] [2020-10-09 12:53:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:53:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:53:46,251 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 12:53:46,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865687585] [2020-10-09 12:53:46,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:53:46,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:53:46,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114222242] [2020-10-09 12:53:46,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 12:53:46,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:53:46,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 12:53:46,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:46,254 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-09 12:53:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:53:46,257 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-09 12:53:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 12:53:46,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-09 12:53:46,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:53:46,258 INFO L225 Difference]: With dead ends: 35 [2020-10-09 12:53:46,258 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 12:53:46,259 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 12:53:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 12:53:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 12:53:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 12:53:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 12:53:46,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-09 12:53:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:53:46,260 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 12:53:46,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 12:53:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 12:53:46,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 12:53:46,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 12:53:46,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 12:53:46 BasicIcfg [2020-10-09 12:53:46,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 12:53:46,266 INFO L168 Benchmark]: Toolchain (without parser) took 4157.83 ms. Allocated memory was 252.7 MB in the beginning and 373.3 MB in the end (delta: 120.6 MB). Free memory was 208.0 MB in the beginning and 234.0 MB in the end (delta: -26.0 MB). Peak memory consumption was 94.6 MB. Max. memory is 14.2 GB. [2020-10-09 12:53:46,267 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 12:53:46,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.60 ms. Allocated memory was 252.7 MB in the beginning and 319.8 MB in the end (delta: 67.1 MB). Free memory was 208.0 MB in the beginning and 275.0 MB in the end (delta: -67.0 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. [2020-10-09 12:53:46,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 319.8 MB. Free memory was 275.0 MB in the beginning and 272.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:53:46,269 INFO L168 Benchmark]: Boogie Preprocessor took 26.25 ms. Allocated memory is still 319.8 MB. Free memory was 272.5 MB in the beginning and 270.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:53:46,270 INFO L168 Benchmark]: RCFGBuilder took 396.17 ms. Allocated memory is still 319.8 MB. Free memory was 270.0 MB in the beginning and 248.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-09 12:53:46,271 INFO L168 Benchmark]: TraceAbstraction took 2988.42 ms. Allocated memory was 319.8 MB in the beginning and 373.3 MB in the end (delta: 53.5 MB). Free memory was 248.1 MB in the beginning and 234.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 67.6 MB. Max. memory is 14.2 GB. [2020-10-09 12:53:46,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 695.60 ms. Allocated memory was 252.7 MB in the beginning and 319.8 MB in the end (delta: 67.1 MB). Free memory was 208.0 MB in the beginning and 275.0 MB in the end (delta: -67.0 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.50 ms. Allocated memory is still 319.8 MB. Free memory was 275.0 MB in the beginning and 272.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.25 ms. Allocated memory is still 319.8 MB. Free memory was 272.5 MB in the beginning and 270.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 396.17 ms. Allocated memory is still 319.8 MB. Free memory was 270.0 MB in the beginning and 248.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2988.42 ms. Allocated memory was 319.8 MB in the beginning and 373.3 MB in the end (delta: 53.5 MB). Free memory was 248.1 MB in the beginning and 234.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 67.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 819 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 60 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2581 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 193 SDtfs, 137 SDslu, 200 SDs, 0 SdLazy, 124 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3668 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 correct! Received shutdown request...