/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:19:55,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:19:55,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:19:55,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:19:55,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:19:55,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:19:55,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:19:55,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:19:55,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:19:55,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:19:55,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:19:55,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:19:55,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:19:55,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:19:55,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:19:55,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:19:55,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:19:55,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:19:55,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:19:55,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:19:55,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:19:55,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:19:55,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:19:55,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:19:55,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:19:55,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:19:55,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:19:55,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:19:55,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:19:55,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:19:55,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:19:55,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:19:55,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:19:55,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:19:55,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:19:55,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:19:55,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:19:55,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:19:55,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:19:55,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:19:55,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:19:55,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:19:55,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:19:55,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:19:55,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:19:55,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:19:55,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:19:55,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:19:55,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:19:55,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:19:55,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:19:55,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:19:55,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:19:55,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:19:55,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:19:55,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:19:55,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:19:55,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:19:55,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:19:55,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:19:55,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:19:55,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:19:55,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:19:55,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:19:55,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:19:55,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:19:55,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:19:55,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:19:55,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:19:55,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:19:55,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:19:55,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:19:56,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:19:56,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:19:56,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:19:56,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:19:56,319 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:19:56,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-10-16 11:19:56,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccc32bb37/8053e30fbccf43948b9915fb40a149cd/FLAGaf4d15175 [2020-10-16 11:19:56,924 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:19:56,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-10-16 11:19:56,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccc32bb37/8053e30fbccf43948b9915fb40a149cd/FLAGaf4d15175 [2020-10-16 11:19:57,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccc32bb37/8053e30fbccf43948b9915fb40a149cd [2020-10-16 11:19:57,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:19:57,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:19:57,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:57,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:19:57,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:19:57,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:57,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ac0def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57, skipping insertion in model container [2020-10-16 11:19:57,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:57,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:19:57,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:19:57,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:57,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:19:57,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:57,981 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:19:57,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57 WrapperNode [2020-10-16 11:19:57,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:57,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:57,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:19:57,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:19:57,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:58,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:19:58,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:19:58,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:19:58,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... [2020-10-16 11:19:58,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:19:58,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:19:58,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:19:58,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:19:58,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:19:58,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:19:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:19:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:19:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:19:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:19:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:19:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:19:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:19:58,145 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:19:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:19:58,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:19:58,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:19:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:19:58,147 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:19:58,535 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:19:58,535 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:19:58,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:58 BoogieIcfgContainer [2020-10-16 11:19:58,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:19:58,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:19:58,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:19:58,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:19:58,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:19:57" (1/3) ... [2020-10-16 11:19:58,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3b3ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:58, skipping insertion in model container [2020-10-16 11:19:58,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:57" (2/3) ... [2020-10-16 11:19:58,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3b3ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:58, skipping insertion in model container [2020-10-16 11:19:58,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:58" (3/3) ... [2020-10-16 11:19:58,547 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-10-16 11:19:58,559 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:19:58,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:19:58,567 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:19:58,568 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:19:58,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,602 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,602 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,603 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,603 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,603 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,603 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,617 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,619 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:58,623 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:19:58,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:19:58,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:19:58,654 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:19:58,654 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:19:58,654 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:19:58,654 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:19:58,654 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:19:58,654 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:19:58,655 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:19:58,666 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:19:58,668 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:19:58,671 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 11:19:58,672 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 11:19:58,713 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 11:19:58,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:19:58,718 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 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 11:19:58,721 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 11:20:00,389 INFO L132 LiptonReduction]: Checked pairs total: 2102 [2020-10-16 11:20:00,392 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 11:20:00,399 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-16 11:20:00,433 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-16 11:20:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-16 11:20:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:20:00,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:00,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:00,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:00,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:00,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-10-16 11:20:00,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:00,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006235991] [2020-10-16 11:20:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:00,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006235991] [2020-10-16 11:20:00,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:00,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:00,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206631899] [2020-10-16 11:20:00,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:00,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:00,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:00,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:00,792 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-16 11:20:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:00,836 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-10-16 11:20:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:00,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:20:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:00,857 INFO L225 Difference]: With dead ends: 214 [2020-10-16 11:20:00,857 INFO L226 Difference]: Without dead ends: 166 [2020-10-16 11:20:00,859 INFO L677 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 [2020-10-16 11:20:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-16 11:20:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-10-16 11:20:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 11:20:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-10-16 11:20:00,932 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-10-16 11:20:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:00,933 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-10-16 11:20:00,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-10-16 11:20:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:20:00,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:00,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:00,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:20:00,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 1 times [2020-10-16 11:20:00,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:00,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106382219] [2020-10-16 11:20:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106382219] [2020-10-16 11:20:01,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:01,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565604231] [2020-10-16 11:20:01,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,035 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-10-16 11:20:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,066 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-10-16 11:20:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:01,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:20:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,068 INFO L225 Difference]: With dead ends: 202 [2020-10-16 11:20:01,069 INFO L226 Difference]: Without dead ends: 130 [2020-10-16 11:20:01,069 INFO L677 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 [2020-10-16 11:20:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-16 11:20:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-16 11:20:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 11:20:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-10-16 11:20:01,084 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-10-16 11:20:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,084 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-10-16 11:20:01,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-10-16 11:20:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:20:01,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:20:01,086 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,087 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 1 times [2020-10-16 11:20:01,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900734924] [2020-10-16 11:20:01,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900734924] [2020-10-16 11:20:01,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:20:01,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176577954] [2020-10-16 11:20:01,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:20:01,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:20:01,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:20:01,133 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 3 states. [2020-10-16 11:20:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,140 INFO L93 Difference]: Finished difference Result 124 states and 303 transitions. [2020-10-16 11:20:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:20:01,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:20:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,143 INFO L225 Difference]: With dead ends: 124 [2020-10-16 11:20:01,143 INFO L226 Difference]: Without dead ends: 124 [2020-10-16 11:20:01,143 INFO L677 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 [2020-10-16 11:20:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-16 11:20:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-16 11:20:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 11:20:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-16 11:20:01,155 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 10 [2020-10-16 11:20:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,156 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-16 11:20:01,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:20:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-16 11:20:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:20:01,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:20:01,160 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 1 times [2020-10-16 11:20:01,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798486273] [2020-10-16 11:20:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798486273] [2020-10-16 11:20:01,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:01,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188653967] [2020-10-16 11:20:01,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,234 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 4 states. [2020-10-16 11:20:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,253 INFO L93 Difference]: Finished difference Result 142 states and 336 transitions. [2020-10-16 11:20:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:01,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:20:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,255 INFO L225 Difference]: With dead ends: 142 [2020-10-16 11:20:01,255 INFO L226 Difference]: Without dead ends: 64 [2020-10-16 11:20:01,256 INFO L677 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 [2020-10-16 11:20:01,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-16 11:20:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-16 11:20:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-16 11:20:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-10-16 11:20:01,263 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-10-16 11:20:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,263 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-10-16 11:20:01,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-10-16 11:20:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:20:01,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:20:01,265 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,265 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-10-16 11:20:01,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786475086] [2020-10-16 11:20:01,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786475086] [2020-10-16 11:20:01,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:01,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704170847] [2020-10-16 11:20:01,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,330 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 4 states. [2020-10-16 11:20:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,364 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-10-16 11:20:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:01,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:20:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,365 INFO L225 Difference]: With dead ends: 77 [2020-10-16 11:20:01,366 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 11:20:01,366 INFO L677 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 [2020-10-16 11:20:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 11:20:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-16 11:20:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-16 11:20:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-10-16 11:20:01,373 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-10-16 11:20:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,373 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-10-16 11:20:01,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-10-16 11:20:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:20:01,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:20:01,375 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-10-16 11:20:01,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542989765] [2020-10-16 11:20:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542989765] [2020-10-16 11:20:01,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:01,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947141542] [2020-10-16 11:20:01,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:01,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:01,432 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 5 states. [2020-10-16 11:20:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,482 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-10-16 11:20:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:01,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:20:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,486 INFO L225 Difference]: With dead ends: 57 [2020-10-16 11:20:01,486 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 11:20:01,487 INFO L677 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 [2020-10-16 11:20:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 11:20:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 11:20:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 11:20:01,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-10-16 11:20:01,492 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-10-16 11:20:01,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,492 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-10-16 11:20:01,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-10-16 11:20:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:20:01,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:20:01,505 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-10-16 11:20:01,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386037269] [2020-10-16 11:20:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386037269] [2020-10-16 11:20:01,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:20:01,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217178913] [2020-10-16 11:20:01,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:20:01,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:20:01,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:01,564 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 6 states. [2020-10-16 11:20:01,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,616 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-10-16 11:20:01,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:20:01,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 11:20:01,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,618 INFO L225 Difference]: With dead ends: 39 [2020-10-16 11:20:01,618 INFO L226 Difference]: Without dead ends: 33 [2020-10-16 11:20:01,618 INFO L677 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 [2020-10-16 11:20:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-16 11:20:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-16 11:20:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-16 11:20:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-10-16 11:20:01,621 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-10-16 11:20:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,621 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-10-16 11:20:01,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:20:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-10-16 11:20:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 11:20:01,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:01,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:01,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:20:01,623 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:01,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:01,623 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-10-16 11:20:01,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:01,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469755130] [2020-10-16 11:20:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:01,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469755130] [2020-10-16 11:20:01,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:01,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:01,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293673501] [2020-10-16 11:20:01,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:01,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:01,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:01,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:01,659 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-10-16 11:20:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:01,671 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-10-16 11:20:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:01,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-16 11:20:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:01,671 INFO L225 Difference]: With dead ends: 32 [2020-10-16 11:20:01,672 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:20:01,672 INFO L677 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 [2020-10-16 11:20:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:20:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:20:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:20:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:20:01,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-16 11:20:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:01,673 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:20:01,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:20:01,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:20:01,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:20:01,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:20:01 BasicIcfg [2020-10-16 11:20:01,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:20:01,681 INFO L168 Benchmark]: Toolchain (without parser) took 4448.12 ms. Allocated memory was 138.9 MB in the beginning and 249.6 MB in the end (delta: 110.6 MB). Free memory was 99.9 MB in the beginning and 190.6 MB in the end (delta: -90.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:01,682 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:20:01,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.73 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.5 MB in the beginning and 159.8 MB in the end (delta: -60.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:01,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 202.4 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:01,684 INFO L168 Benchmark]: Boogie Preprocessor took 28.69 ms. Allocated memory is still 202.4 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:01,685 INFO L168 Benchmark]: RCFGBuilder took 463.48 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 134.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:01,686 INFO L168 Benchmark]: TraceAbstraction took 3138.62 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 133.5 MB in the beginning and 190.6 MB in the end (delta: -57.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:20:01,690 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.73 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.5 MB in the beginning and 159.8 MB in the end (delta: -60.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.00 ms. Allocated memory is still 202.4 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.69 ms. Allocated memory is still 202.4 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.48 ms. Allocated memory is still 202.4 MB. Free memory was 156.5 MB in the beginning and 134.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3138.62 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 133.5 MB in the beginning and 190.6 MB in the end (delta: -57.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 747 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 39 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 77 PlacesBefore, 30 PlacesAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 2102 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: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 125 SDtfs, 114 SDslu, 139 SDs, 0 SdLazy, 101 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 3147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...