/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:54:23,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:54:23,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:54:23,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:54:23,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:54:23,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:54:23,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:54:23,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:54:23,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:54:23,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:54:23,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:54:23,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:54:23,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:54:23,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:54:23,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:54:23,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:54:23,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:54:23,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:54:23,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:54:23,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:54:23,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:54:23,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:54:23,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:54:23,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:54:23,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:54:23,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:54:23,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:54:23,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:54:23,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:54:23,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:54:23,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:54:23,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:54:23,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:54:23,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:54:23,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:54:23,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:54:23,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:54:23,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:54:23,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:54:23,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:54:23,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:54:23,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:54:24,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:54:24,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:54:24,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:54:24,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:54:24,006 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:54:24,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:54:24,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:54:24,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:54:24,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:54:24,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:54:24,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:54:24,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:54:24,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:54:24,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:54:24,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:54:24,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:54:24,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:54:24,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:54:24,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:54:24,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:54:24,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:54:24,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:54:24,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:54:24,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:54:24,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:54:24,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:54:24,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:54:24,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:54:24,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:54:24,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:54:24,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:54:24,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:54:24,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:54:24,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:54:24,381 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:54:24,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-17 17:54:24,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f266b1af/949ced73af3e40bdbcbd62118f986f0e/FLAG0bea88522 [2020-04-17 17:54:25,000 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:54:25,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-17 17:54:25,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f266b1af/949ced73af3e40bdbcbd62118f986f0e/FLAG0bea88522 [2020-04-17 17:54:25,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f266b1af/949ced73af3e40bdbcbd62118f986f0e [2020-04-17 17:54:25,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:54:25,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:54:25,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:54:25,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:54:25,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:54:25,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:54:25" (1/1) ... [2020-04-17 17:54:25,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cdb82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:25, skipping insertion in model container [2020-04-17 17:54:25,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:54:25" (1/1) ... [2020-04-17 17:54:25,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:54:25,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:54:25,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:54:25,939 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:54:26,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:54:26,110 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:54:26,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26 WrapperNode [2020-04-17 17:54:26,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:54:26,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:54:26,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:54:26,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:54:26,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:54:26,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:54:26,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:54:26,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:54:26,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (1/1) ... [2020-04-17 17:54:26,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:54:26,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:54:26,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:54:26,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:54:26,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (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 17:54:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:54:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:54:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:54:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:54:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:54:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:54:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:54:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:54:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:54:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:54:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:54:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:54:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:54:26,254 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 17:54:26,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:54:26,612 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:54:26,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:54:26 BoogieIcfgContainer [2020-04-17 17:54:26,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:54:26,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:54:26,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:54:26,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:54:26,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:54:25" (1/3) ... [2020-04-17 17:54:26,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39781f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:54:26, skipping insertion in model container [2020-04-17 17:54:26,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:54:26" (2/3) ... [2020-04-17 17:54:26,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39781f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:54:26, skipping insertion in model container [2020-04-17 17:54:26,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:54:26" (3/3) ... [2020-04-17 17:54:26,627 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-04-17 17:54:26,638 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:54:26,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:54:26,650 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:54:26,651 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:54:26,680 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,680 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,680 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,681 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,682 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,682 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,682 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,683 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,683 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,683 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,683 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,684 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,684 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,684 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,685 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,685 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,685 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,686 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,690 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,690 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,690 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,691 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,705 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,706 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,706 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,706 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,710 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,711 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,712 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,713 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:54:26,731 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:54:26,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:54:26,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:54:26,752 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:54:26,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:54:26,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:54:26,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:54:26,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:54:26,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:54:26,767 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-04-17 17:54:26,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-17 17:54:26,811 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-17 17:54:26,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:54:26,817 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:54:26,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-17 17:54:26,842 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-17 17:54:26,842 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:54:26,843 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-17 17:54:26,845 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-17 17:54:26,846 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:54:28,354 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-04-17 17:54:28,678 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-04-17 17:54:28,679 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-17 17:54:28,682 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-17 17:54:28,704 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-17 17:54:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-17 17:54:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:54:28,713 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:28,714 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:28,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:28,719 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-04-17 17:54:28,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:28,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386618419] [2020-04-17 17:54:28,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:28,941 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 17:54:28,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386618419] [2020-04-17 17:54:28,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:28,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:54:28,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578173752] [2020-04-17 17:54:28,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:54:28,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:28,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:54:28,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:28,964 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-17 17:54:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,006 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-04-17 17:54:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:54:29,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 17:54:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,033 INFO L225 Difference]: With dead ends: 220 [2020-04-17 17:54:29,035 INFO L226 Difference]: Without dead ends: 172 [2020-04-17 17:54:29,037 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-17 17:54:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-17 17:54:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-17 17:54:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-04-17 17:54:29,123 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-04-17 17:54:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,124 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-04-17 17:54:29,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:54:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-04-17 17:54:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:54:29,125 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,125 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,126 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,126 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-04-17 17:54:29,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349680220] [2020-04-17 17:54:29,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:29,191 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 17:54:29,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349680220] [2020-04-17 17:54:29,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:29,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:54:29,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874398399] [2020-04-17 17:54:29,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:54:29,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:29,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:54:29,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,195 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-04-17 17:54:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,215 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-04-17 17:54:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:54:29,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 17:54:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,218 INFO L225 Difference]: With dead ends: 166 [2020-04-17 17:54:29,218 INFO L226 Difference]: Without dead ends: 166 [2020-04-17 17:54:29,219 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-17 17:54:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-17 17:54:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-17 17:54:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-04-17 17:54:29,234 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-04-17 17:54:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,235 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-04-17 17:54:29,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:54:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-04-17 17:54:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:54:29,236 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,236 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,237 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-04-17 17:54:29,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873025710] [2020-04-17 17:54:29,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:29,326 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 17:54:29,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873025710] [2020-04-17 17:54:29,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:29,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:54:29,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885373924] [2020-04-17 17:54:29,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:54:29,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:54:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,329 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-04-17 17:54:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,343 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-04-17 17:54:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:54:29,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 17:54:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,345 INFO L225 Difference]: With dead ends: 158 [2020-04-17 17:54:29,345 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 17:54:29,346 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 17:54:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 17:54:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 17:54:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-04-17 17:54:29,369 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-04-17 17:54:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,370 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-04-17 17:54:29,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:54:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-04-17 17:54:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:54:29,371 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,372 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,372 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-04-17 17:54:29,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018686426] [2020-04-17 17:54:29,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:54:29,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018686426] [2020-04-17 17:54:29,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:29,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:54:29,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814238855] [2020-04-17 17:54:29,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:54:29,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:29,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:54:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:54:29,429 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-04-17 17:54:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,457 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-04-17 17:54:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:54:29,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:54:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,463 INFO L225 Difference]: With dead ends: 218 [2020-04-17 17:54:29,463 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 17:54:29,464 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 17:54:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 17:54:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 17:54:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 17:54:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-04-17 17:54:29,486 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-04-17 17:54:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,486 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-04-17 17:54:29,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:54:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-04-17 17:54:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:54:29,491 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,491 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,491 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-04-17 17:54:29,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024851705] [2020-04-17 17:54:29,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:29,579 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 17:54:29,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024851705] [2020-04-17 17:54:29,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:29,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:54:29,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444492843] [2020-04-17 17:54:29,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:54:29,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:54:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:54:29,582 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-04-17 17:54:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,614 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-04-17 17:54:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:54:29,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:54:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,617 INFO L225 Difference]: With dead ends: 167 [2020-04-17 17:54:29,617 INFO L226 Difference]: Without dead ends: 125 [2020-04-17 17:54:29,618 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 17:54:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-17 17:54:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-17 17:54:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-17 17:54:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-04-17 17:54:29,630 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-04-17 17:54:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,631 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-04-17 17:54:29,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:54:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-04-17 17:54:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:54:29,634 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,634 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,635 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-04-17 17:54:29,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578657952] [2020-04-17 17:54:29,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:29,723 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 17:54:29,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578657952] [2020-04-17 17:54:29,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:29,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:54:29,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965135345] [2020-04-17 17:54:29,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:54:29,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:29,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:54:29,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:54:29,727 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-04-17 17:54:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,775 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-17 17:54:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:54:29,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 17:54:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,777 INFO L225 Difference]: With dead ends: 121 [2020-04-17 17:54:29,777 INFO L226 Difference]: Without dead ends: 93 [2020-04-17 17:54:29,778 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:54:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-17 17:54:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-17 17:54:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-17 17:54:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-17 17:54:29,789 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-04-17 17:54:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,789 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-17 17:54:29,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:54:29,789 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-17 17:54:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:54:29,792 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,792 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,792 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-04-17 17:54:29,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452960216] [2020-04-17 17:54:29,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:29,870 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 17:54:29,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452960216] [2020-04-17 17:54:29,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:29,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:54:29,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570559472] [2020-04-17 17:54:29,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:54:29,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:54:29,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,873 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-04-17 17:54:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,884 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-04-17 17:54:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:54:29,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-04-17 17:54:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,886 INFO L225 Difference]: With dead ends: 110 [2020-04-17 17:54:29,886 INFO L226 Difference]: Without dead ends: 88 [2020-04-17 17:54:29,887 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-04-17 17:54:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-04-17 17:54:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-17 17:54:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-04-17 17:54:29,891 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-04-17 17:54:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,892 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-04-17 17:54:29,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:54:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-04-17 17:54:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:54:29,895 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,895 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,896 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-04-17 17:54:29,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96855381] [2020-04-17 17:54:29,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:29,955 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 17:54:29,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96855381] [2020-04-17 17:54:29,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:29,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:54:29,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084512121] [2020-04-17 17:54:29,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:54:29,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:29,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:54:29,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,959 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-04-17 17:54:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:29,976 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-04-17 17:54:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:54:29,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 17:54:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:29,977 INFO L225 Difference]: With dead ends: 104 [2020-04-17 17:54:29,977 INFO L226 Difference]: Without dead ends: 66 [2020-04-17 17:54:29,978 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:54:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-17 17:54:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-04-17 17:54:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-04-17 17:54:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-04-17 17:54:29,983 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-04-17 17:54:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:29,983 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-04-17 17:54:29,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:54:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-04-17 17:54:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:54:29,984 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:29,984 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:29,984 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:29,985 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-04-17 17:54:29,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:29,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886903318] [2020-04-17 17:54:29,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:30,054 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 17:54:30,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886903318] [2020-04-17 17:54:30,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:30,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:54:30,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229109933] [2020-04-17 17:54:30,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:54:30,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:30,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:54:30,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:54:30,058 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-04-17 17:54:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:30,083 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-04-17 17:54:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:54:30,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 17:54:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:30,084 INFO L225 Difference]: With dead ends: 71 [2020-04-17 17:54:30,084 INFO L226 Difference]: Without dead ends: 64 [2020-04-17 17:54:30,085 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 17:54:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-17 17:54:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-04-17 17:54:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-04-17 17:54:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-04-17 17:54:30,088 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-04-17 17:54:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:30,089 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-04-17 17:54:30,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:54:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-04-17 17:54:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:54:30,090 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:54:30,090 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:54:30,090 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:54:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:54:30,091 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-04-17 17:54:30,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:54:30,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508765131] [2020-04-17 17:54:30,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:54:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:54:30,180 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 17:54:30,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508765131] [2020-04-17 17:54:30,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:54:30,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:54:30,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996379948] [2020-04-17 17:54:30,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:54:30,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:54:30,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:54:30,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:54:30,183 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-04-17 17:54:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:54:30,213 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-04-17 17:54:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:54:30,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 17:54:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:54:30,213 INFO L225 Difference]: With dead ends: 58 [2020-04-17 17:54:30,213 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:54:30,214 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:54:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:54:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:54:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:54:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:54:30,215 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 17:54:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:54:30,215 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:54:30,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:54:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:54:30,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:54:30,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:54:30 BasicIcfg [2020-04-17 17:54:30,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:54:30,224 INFO L168 Benchmark]: Toolchain (without parser) took 4937.60 ms. Allocated memory was 145.8 MB in the beginning and 248.5 MB in the end (delta: 102.8 MB). Free memory was 102.7 MB in the beginning and 176.3 MB in the end (delta: -73.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:54:30,225 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 17:54:30,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 805.91 ms. Allocated memory was 145.8 MB in the beginning and 199.2 MB in the end (delta: 53.5 MB). Free memory was 100.7 MB in the beginning and 155.9 MB in the end (delta: -55.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-17 17:54:30,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.84 ms. Allocated memory is still 199.2 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:54:30,232 INFO L168 Benchmark]: Boogie Preprocessor took 28.36 ms. Allocated memory is still 199.2 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:54:30,233 INFO L168 Benchmark]: RCFGBuilder took 419.33 ms. Allocated memory is still 199.2 MB. Free memory was 152.5 MB in the beginning and 131.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:54:30,238 INFO L168 Benchmark]: TraceAbstraction took 3602.04 ms. Allocated memory was 199.2 MB in the beginning and 248.5 MB in the end (delta: 49.3 MB). Free memory was 130.5 MB in the beginning and 176.3 MB in the end (delta: -45.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:54:30,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 805.91 ms. Allocated memory was 145.8 MB in the beginning and 199.2 MB in the end (delta: 53.5 MB). Free memory was 100.7 MB in the beginning and 155.9 MB in the end (delta: -55.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.84 ms. Allocated memory is still 199.2 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.36 ms. Allocated memory is still 199.2 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.33 ms. Allocated memory is still 199.2 MB. Free memory was 152.5 MB in the beginning and 131.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3602.04 ms. Allocated memory was 199.2 MB in the beginning and 248.5 MB in the end (delta: 49.3 MB). Free memory was 130.5 MB in the beginning and 176.3 MB in the end (delta: -45.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 621 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 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 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...