/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:07:59,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:07:59,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:07:59,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:07:59,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:07:59,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:07:59,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:07:59,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:07:59,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:07:59,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:07:59,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:07:59,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:07:59,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:07:59,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:07:59,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:07:59,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:07:59,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:07:59,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:07:59,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:07:59,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:07:59,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:07:59,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:07:59,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:07:59,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:07:59,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:07:59,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:07:59,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:07:59,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:07:59,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:07:59,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:07:59,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:07:59,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:07:59,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:07:59,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:07:59,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:07:59,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:07:59,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:07:59,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:07:59,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:07:59,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:07:59,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:07:59,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:08:00,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:08:00,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:08:00,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:08:00,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:08:00,005 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:08:00,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:08:00,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:08:00,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:08:00,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:08:00,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:08:00,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:08:00,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:08:00,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:08:00,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:08:00,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:08:00,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:08:00,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:08:00,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:08:00,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:08:00,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:08:00,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:08:00,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:08:00,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:08:00,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:08:00,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:08:00,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:08:00,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:08:00,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:08:00,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:08:00,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:08:00,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:08:00,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:08:00,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:08:00,302 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:08:00,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-04-17 22:08:00,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712a94302/42a10dcb165f4f73b6220b2f0c78b748/FLAGaa38bd6d9 [2020-04-17 22:08:00,907 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:08:00,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-04-17 22:08:00,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712a94302/42a10dcb165f4f73b6220b2f0c78b748/FLAGaa38bd6d9 [2020-04-17 22:08:01,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/712a94302/42a10dcb165f4f73b6220b2f0c78b748 [2020-04-17 22:08:01,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:08:01,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:08:01,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:08:01,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:08:01,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:08:01,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:01,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4b811e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01, skipping insertion in model container [2020-04-17 22:08:01,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:01,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:08:01,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:08:01,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:08:01,869 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:08:01,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:08:01,996 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:08:01,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01 WrapperNode [2020-04-17 22:08:01,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:08:01,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:08:01,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:08:01,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:08:02,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:08:02,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:08:02,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:08:02,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:08:02,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (1/1) ... [2020-04-17 22:08:02,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:08:02,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:08:02,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:08:02,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:08:02,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (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 [2020-04-17 22:08:02,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:08:02,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:08:02,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:08:02,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:08:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:08:02,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:08:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:08:02,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:08:02,146 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:08:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:08:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 22:08:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 22:08:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:08:02,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:08:02,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:08:02,151 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:08:02,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:08:02,538 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:08:02,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:08:02 BoogieIcfgContainer [2020-04-17 22:08:02,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:08:02,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:08:02,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:08:02,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:08:02,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:08:01" (1/3) ... [2020-04-17 22:08:02,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e874c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:08:02, skipping insertion in model container [2020-04-17 22:08:02,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:01" (2/3) ... [2020-04-17 22:08:02,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e874c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:08:02, skipping insertion in model container [2020-04-17 22:08:02,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:08:02" (3/3) ... [2020-04-17 22:08:02,561 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-04-17 22:08:02,571 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:08:02,572 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:08:02,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:08:02,581 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:08:02,612 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,613 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,613 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,613 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,614 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,614 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,615 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,615 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,616 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,616 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,616 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,616 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,618 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,618 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,618 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,619 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,620 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,620 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,621 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,621 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,621 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,621 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,622 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,623 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,632 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,633 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,633 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,634 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,641 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,642 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,643 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,643 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,645 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,646 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,646 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,646 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,650 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,651 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,651 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,651 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:02,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 22:08:02,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:08:02,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:08:02,699 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:08:02,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:08:02,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:08:02,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:08:02,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:08:02,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:08:02,725 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:02,727 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:02,790 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 22:08:02,790 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:08:02,796 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 22:08:02,799 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:02,823 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 22:08:02,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:08:02,824 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 22:08:02,826 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-17 22:08:02,828 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:08:04,770 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-17 22:08:04,771 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-17 22:08:04,787 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-17 22:08:04,915 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-17 22:08:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-17 22:08:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:08:04,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:04,939 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:04,940 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:04,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-17 22:08:04,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:04,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130684598] [2020-04-17 22:08:04,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:05,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130684598] [2020-04-17 22:08:05,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:05,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:05,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766291136] [2020-04-17 22:08:05,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:08:05,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:05,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:08:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:08:05,259 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-17 22:08:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:05,330 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-17 22:08:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:08:05,334 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 22:08:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:05,367 INFO L225 Difference]: With dead ends: 850 [2020-04-17 22:08:05,367 INFO L226 Difference]: Without dead ends: 706 [2020-04-17 22:08:05,369 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:08:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-17 22:08:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-17 22:08:05,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-17 22:08:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-17 22:08:05,500 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-17 22:08:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:05,501 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-17 22:08:05,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:08:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-17 22:08:05,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:08:05,507 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:05,507 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:05,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:05,508 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-17 22:08:05,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:05,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116261815] [2020-04-17 22:08:05,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:05,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116261815] [2020-04-17 22:08:05,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:05,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:05,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107065743] [2020-04-17 22:08:05,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:05,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:05,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:05,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:05,677 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-17 22:08:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:05,716 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-17 22:08:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:05,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:08:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:05,723 INFO L225 Difference]: With dead ends: 778 [2020-04-17 22:08:05,723 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 22:08:05,724 INFO L678 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 [2020-04-17 22:08:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 22:08:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-17 22:08:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-17 22:08:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-17 22:08:05,779 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-17 22:08:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:05,779 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-17 22:08:05,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-17 22:08:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:08:05,782 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:05,782 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:05,782 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:05,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1068447712, now seen corresponding path program 1 times [2020-04-17 22:08:05,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:05,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322123790] [2020-04-17 22:08:05,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:05,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322123790] [2020-04-17 22:08:05,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:05,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:05,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764144347] [2020-04-17 22:08:05,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:05,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:05,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:05,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:05,846 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-17 22:08:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:05,887 INFO L93 Difference]: Finished difference Result 718 states and 2351 transitions. [2020-04-17 22:08:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:05,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:08:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:05,893 INFO L225 Difference]: With dead ends: 718 [2020-04-17 22:08:05,894 INFO L226 Difference]: Without dead ends: 610 [2020-04-17 22:08:05,894 INFO L678 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 [2020-04-17 22:08:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-17 22:08:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-04-17 22:08:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-04-17 22:08:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2042 transitions. [2020-04-17 22:08:05,919 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2042 transitions. Word has length 12 [2020-04-17 22:08:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:05,919 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 2042 transitions. [2020-04-17 22:08:05,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:05,920 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2042 transitions. [2020-04-17 22:08:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:08:05,921 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:05,921 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:05,921 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:05,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1923922428, now seen corresponding path program 1 times [2020-04-17 22:08:05,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:05,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300838844] [2020-04-17 22:08:05,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300838844] [2020-04-17 22:08:06,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:06,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995345595] [2020-04-17 22:08:06,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:06,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:06,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:06,013 INFO L87 Difference]: Start difference. First operand 610 states and 2042 transitions. Second operand 4 states. [2020-04-17 22:08:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:06,064 INFO L93 Difference]: Finished difference Result 658 states and 2134 transitions. [2020-04-17 22:08:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:06,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:08:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:06,070 INFO L225 Difference]: With dead ends: 658 [2020-04-17 22:08:06,070 INFO L226 Difference]: Without dead ends: 562 [2020-04-17 22:08:06,071 INFO L678 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 [2020-04-17 22:08:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-04-17 22:08:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-04-17 22:08:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-04-17 22:08:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-04-17 22:08:06,092 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-04-17 22:08:06,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:06,092 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-04-17 22:08:06,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-04-17 22:08:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:08:06,094 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,094 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,095 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,095 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-04-17 22:08:06,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273886710] [2020-04-17 22:08:06,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273886710] [2020-04-17 22:08:06,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:06,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090411244] [2020-04-17 22:08:06,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:06,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:06,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:06,231 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-04-17 22:08:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:06,331 INFO L93 Difference]: Finished difference Result 1154 states and 3580 transitions. [2020-04-17 22:08:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-17 22:08:06,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 22:08:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:06,337 INFO L225 Difference]: With dead ends: 1154 [2020-04-17 22:08:06,337 INFO L226 Difference]: Without dead ends: 598 [2020-04-17 22:08:06,338 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 22:08:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-04-17 22:08:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 526. [2020-04-17 22:08:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-04-17 22:08:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1632 transitions. [2020-04-17 22:08:06,358 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1632 transitions. Word has length 14 [2020-04-17 22:08:06,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:06,358 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1632 transitions. [2020-04-17 22:08:06,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1632 transitions. [2020-04-17 22:08:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:08:06,360 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,360 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,361 INFO L82 PathProgramCache]: Analyzing trace with hash 437909136, now seen corresponding path program 1 times [2020-04-17 22:08:06,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955211502] [2020-04-17 22:08:06,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955211502] [2020-04-17 22:08:06,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:06,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34057940] [2020-04-17 22:08:06,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:06,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:06,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:06,445 INFO L87 Difference]: Start difference. First operand 526 states and 1632 transitions. Second operand 4 states. [2020-04-17 22:08:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:06,480 INFO L93 Difference]: Finished difference Result 568 states and 1723 transitions. [2020-04-17 22:08:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:06,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:08:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:06,485 INFO L225 Difference]: With dead ends: 568 [2020-04-17 22:08:06,485 INFO L226 Difference]: Without dead ends: 514 [2020-04-17 22:08:06,485 INFO L678 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 [2020-04-17 22:08:06,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-04-17 22:08:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-04-17 22:08:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-17 22:08:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1582 transitions. [2020-04-17 22:08:06,504 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1582 transitions. Word has length 14 [2020-04-17 22:08:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:06,504 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1582 transitions. [2020-04-17 22:08:06,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1582 transitions. [2020-04-17 22:08:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:06,506 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,507 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,507 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-17 22:08:06,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659656995] [2020-04-17 22:08:06,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659656995] [2020-04-17 22:08:06,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:06,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611377445] [2020-04-17 22:08:06,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:06,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:06,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:06,581 INFO L87 Difference]: Start difference. First operand 514 states and 1582 transitions. Second operand 5 states. [2020-04-17 22:08:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:06,622 INFO L93 Difference]: Finished difference Result 778 states and 2356 transitions. [2020-04-17 22:08:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:06,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:06,626 INFO L225 Difference]: With dead ends: 778 [2020-04-17 22:08:06,626 INFO L226 Difference]: Without dead ends: 418 [2020-04-17 22:08:06,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:08:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-17 22:08:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-04-17 22:08:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-04-17 22:08:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1268 transitions. [2020-04-17 22:08:06,641 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1268 transitions. Word has length 15 [2020-04-17 22:08:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:06,642 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1268 transitions. [2020-04-17 22:08:06,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1268 transitions. [2020-04-17 22:08:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:06,643 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,643 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,644 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash -432648259, now seen corresponding path program 2 times [2020-04-17 22:08:06,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010264105] [2020-04-17 22:08:06,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010264105] [2020-04-17 22:08:06,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:06,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141255732] [2020-04-17 22:08:06,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:06,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:06,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:06,767 INFO L87 Difference]: Start difference. First operand 418 states and 1268 transitions. Second operand 5 states. [2020-04-17 22:08:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:06,870 INFO L93 Difference]: Finished difference Result 766 states and 2220 transitions. [2020-04-17 22:08:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:08:06,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:06,875 INFO L225 Difference]: With dead ends: 766 [2020-04-17 22:08:06,875 INFO L226 Difference]: Without dead ends: 370 [2020-04-17 22:08:06,876 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 22:08:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-04-17 22:08:06,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-04-17 22:08:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-04-17 22:08:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 902 transitions. [2020-04-17 22:08:06,893 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 902 transitions. Word has length 15 [2020-04-17 22:08:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:06,897 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 902 transitions. [2020-04-17 22:08:06,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 902 transitions. [2020-04-17 22:08:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:06,902 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,902 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,902 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,902 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-04-17 22:08:06,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275922939] [2020-04-17 22:08:06,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275922939] [2020-04-17 22:08:07,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:07,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374026406] [2020-04-17 22:08:07,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:07,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:07,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:07,007 INFO L87 Difference]: Start difference. First operand 322 states and 902 transitions. Second operand 5 states. [2020-04-17 22:08:07,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,048 INFO L93 Difference]: Finished difference Result 446 states and 1208 transitions. [2020-04-17 22:08:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:07,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,051 INFO L225 Difference]: With dead ends: 446 [2020-04-17 22:08:07,051 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 22:08:07,052 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:08:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 22:08:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 22:08:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 22:08:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 611 transitions. [2020-04-17 22:08:07,060 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 611 transitions. Word has length 15 [2020-04-17 22:08:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,060 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 611 transitions. [2020-04-17 22:08:07,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 611 transitions. [2020-04-17 22:08:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:07,061 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,061 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,062 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-04-17 22:08:07,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696185499] [2020-04-17 22:08:07,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696185499] [2020-04-17 22:08:07,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:07,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354898281] [2020-04-17 22:08:07,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:07,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:07,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:07,114 INFO L87 Difference]: Start difference. First operand 230 states and 611 transitions. Second operand 4 states. [2020-04-17 22:08:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,153 INFO L93 Difference]: Finished difference Result 272 states and 660 transitions. [2020-04-17 22:08:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:07,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 22:08:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,156 INFO L225 Difference]: With dead ends: 272 [2020-04-17 22:08:07,156 INFO L226 Difference]: Without dead ends: 207 [2020-04-17 22:08:07,156 INFO L678 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 [2020-04-17 22:08:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-04-17 22:08:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-04-17 22:08:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-04-17 22:08:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 511 transitions. [2020-04-17 22:08:07,163 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 511 transitions. Word has length 15 [2020-04-17 22:08:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,165 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 511 transitions. [2020-04-17 22:08:07,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 511 transitions. [2020-04-17 22:08:07,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:08:07,166 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,166 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,167 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-17 22:08:07,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486247462] [2020-04-17 22:08:07,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486247462] [2020-04-17 22:08:07,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:07,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664543116] [2020-04-17 22:08:07,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:07,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:07,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:07,221 INFO L87 Difference]: Start difference. First operand 207 states and 511 transitions. Second operand 5 states. [2020-04-17 22:08:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,267 INFO L93 Difference]: Finished difference Result 203 states and 440 transitions. [2020-04-17 22:08:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:08:07,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 22:08:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,269 INFO L225 Difference]: With dead ends: 203 [2020-04-17 22:08:07,269 INFO L226 Difference]: Without dead ends: 153 [2020-04-17 22:08:07,269 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:08:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-04-17 22:08:07,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-04-17 22:08:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-04-17 22:08:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 324 transitions. [2020-04-17 22:08:07,275 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 324 transitions. Word has length 16 [2020-04-17 22:08:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,276 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 324 transitions. [2020-04-17 22:08:07,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 324 transitions. [2020-04-17 22:08:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:08:07,277 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,277 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,277 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-17 22:08:07,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487234390] [2020-04-17 22:08:07,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487234390] [2020-04-17 22:08:07,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 22:08:07,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612933588] [2020-04-17 22:08:07,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:08:07,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:08:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:08:07,333 INFO L87 Difference]: Start difference. First operand 153 states and 324 transitions. Second operand 6 states. [2020-04-17 22:08:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,402 INFO L93 Difference]: Finished difference Result 129 states and 253 transitions. [2020-04-17 22:08:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:08:07,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-17 22:08:07,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,404 INFO L225 Difference]: With dead ends: 129 [2020-04-17 22:08:07,404 INFO L226 Difference]: Without dead ends: 91 [2020-04-17 22:08:07,404 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:08:07,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-04-17 22:08:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-04-17 22:08:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-04-17 22:08:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-04-17 22:08:07,408 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 17 [2020-04-17 22:08:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,409 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-04-17 22:08:07,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:08:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-04-17 22:08:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 22:08:07,410 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,410 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,410 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 1 times [2020-04-17 22:08:07,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347999378] [2020-04-17 22:08:07,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347999378] [2020-04-17 22:08:07,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 22:08:07,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932941802] [2020-04-17 22:08:07,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 22:08:07,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 22:08:07,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:08:07,511 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-04-17 22:08:07,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,556 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-04-17 22:08:07,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:08:07,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-17 22:08:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,557 INFO L225 Difference]: With dead ends: 81 [2020-04-17 22:08:07,557 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:08:07,558 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:08:07,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:08:07,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:08:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:08:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:08:07,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-17 22:08:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,559 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:08:07,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 22:08:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:08:07,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:08:07,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:08:07 BasicIcfg [2020-04-17 22:08:07,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:08:07,571 INFO L168 Benchmark]: Toolchain (without parser) took 6365.90 ms. Allocated memory was 146.3 MB in the beginning and 288.4 MB in the end (delta: 142.1 MB). Free memory was 102.7 MB in the beginning and 148.8 MB in the end (delta: -46.1 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:07,573 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:08:07,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.54 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 161.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:07,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 158.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:07,578 INFO L168 Benchmark]: Boogie Preprocessor took 28.20 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:07,584 INFO L168 Benchmark]: RCFGBuilder took 467.11 ms. Allocated memory is still 203.4 MB. Free memory was 157.1 MB in the beginning and 133.4 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:07,584 INFO L168 Benchmark]: TraceAbstraction took 5015.37 ms. Allocated memory was 203.4 MB in the beginning and 288.4 MB in the end (delta: 84.9 MB). Free memory was 132.8 MB in the beginning and 148.8 MB in the end (delta: -16.1 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:07,592 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.54 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 161.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 158.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.20 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.11 ms. Allocated memory is still 203.4 MB. Free memory was 157.1 MB in the beginning and 133.4 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5015.37 ms. Allocated memory was 203.4 MB in the beginning and 288.4 MB in the end (delta: 84.9 MB). Free memory was 132.8 MB in the beginning and 148.8 MB in the end (delta: -16.1 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 360 SDtfs, 372 SDslu, 629 SDs, 0 SdLazy, 215 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 120 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 7135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...