/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:13:50,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:13:50,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:13:50,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:13:50,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:13:50,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:13:50,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:13:50,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:13:50,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:13:50,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:13:50,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:13:50,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:13:50,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:13:50,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:13:50,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:13:50,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:13:50,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:13:50,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:13:50,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:13:50,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:13:50,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:13:50,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:13:50,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:13:50,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:13:50,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:13:50,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:13:50,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:13:50,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:13:50,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:13:50,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:13:50,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:13:50,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:13:50,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:13:50,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:13:50,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:13:50,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:13:50,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:13:50,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:13:50,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:13:50,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:13:50,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:13:50,259 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:13:50,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:13:50,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:13:50,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:13:50,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:13:50,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:13:50,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:13:50,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:13:50,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:13:50,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:13:50,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:13:50,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:13:50,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:13:50,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:13:50,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:13:50,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:13:50,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:13:50,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:13:50,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:13:50,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:13:50,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:13:50,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:13:50,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:13:50,267 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:13:50,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:13:50,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:13:50,267 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:13:50,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:13:50,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:13:50,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:13:50,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:13:50,687 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:13:50,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-11-09 17:13:50,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d321e78/677b073a58df4082a0657e13d658be3b/FLAGc68fd21e2 [2020-11-09 17:13:51,470 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:13:51,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-11-09 17:13:51,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d321e78/677b073a58df4082a0657e13d658be3b/FLAGc68fd21e2 [2020-11-09 17:13:51,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d321e78/677b073a58df4082a0657e13d658be3b [2020-11-09 17:13:51,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:13:51,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:13:51,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:13:51,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:13:51,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:13:51,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:13:51" (1/1) ... [2020-11-09 17:13:51,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8215f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:51, skipping insertion in model container [2020-11-09 17:13:51,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:13:51" (1/1) ... [2020-11-09 17:13:51,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:13:51,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:13:52,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:13:52,353 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:13:52,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:13:52,571 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:13:52,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52 WrapperNode [2020-11-09 17:13:52,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:13:52,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:13:52,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:13:52,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:13:52,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:13:52,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:13:52,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:13:52,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:13:52,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (1/1) ... [2020-11-09 17:13:52,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:13:52,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:13:52,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:13:52,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:13:52,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (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 [2020-11-09 17:13:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:13:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:13:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:13:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:13:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:13:52,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:13:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:13:52,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:13:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:13:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:13:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:13:52,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:13:52,782 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:13:53,309 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:13:53,309 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:13:53,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:13:53 BoogieIcfgContainer [2020-11-09 17:13:53,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:13:53,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:13:53,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:13:53,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:13:53,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:13:51" (1/3) ... [2020-11-09 17:13:53,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432c3b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:13:53, skipping insertion in model container [2020-11-09 17:13:53,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:13:52" (2/3) ... [2020-11-09 17:13:53,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432c3b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:13:53, skipping insertion in model container [2020-11-09 17:13:53,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:13:53" (3/3) ... [2020-11-09 17:13:53,322 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.oepc.i [2020-11-09 17:13:53,340 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:13:53,340 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:13:53,345 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:13:53,346 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:13:53,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,382 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,382 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,385 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,385 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,386 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,386 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:13:53,401 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:13:53,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 17:13:53,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:13:53,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:13:53,442 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:13:53,442 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:13:53,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:13:53,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:13:53,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:13:53,442 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:13:53,455 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:13:53,455 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 64 transitions, 138 flow [2020-11-09 17:13:53,459 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 64 transitions, 138 flow [2020-11-09 17:13:53,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 64 transitions, 138 flow [2020-11-09 17:13:53,507 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2020-11-09 17:13:53,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:13:53,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 3/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-09 17:13:53,514 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-09 17:13:56,789 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-11-09 17:13:57,294 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-11-09 17:13:57,407 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 17:13:57,651 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-11-09 17:13:57,760 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 17:13:57,886 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-11-09 17:13:58,051 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-11-09 17:13:58,118 INFO L131 LiptonReduction]: Checked pairs total: 1620 [2020-11-09 17:13:58,118 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-11-09 17:13:58,127 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-11-09 17:13:58,140 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-11-09 17:13:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-11-09 17:13:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 17:13:58,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:13:58,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 17:13:58,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:13:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:13:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1340707883, now seen corresponding path program 1 times [2020-11-09 17:13:58,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:13:58,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038284226] [2020-11-09 17:13:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:13:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:13:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:13:58,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038284226] [2020-11-09 17:13:58,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:13:58,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:13:58,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [809273346] [2020-11-09 17:13:58,413 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:13:58,416 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:13:58,428 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-11-09 17:13:58,429 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:13:58,433 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:13:58,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:13:58,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:13:58,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:13:58,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:13:58,453 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-11-09 17:13:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:13:58,484 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-11-09 17:13:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:13:58,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-09 17:13:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:13:58,497 INFO L225 Difference]: With dead ends: 72 [2020-11-09 17:13:58,498 INFO L226 Difference]: Without dead ends: 56 [2020-11-09 17:13:58,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:13:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-09 17:13:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-09 17:13:58,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-09 17:13:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-11-09 17:13:58,548 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-11-09 17:13:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:13:58,549 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-11-09 17:13:58,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:13:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-11-09 17:13:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-09 17:13:58,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:13:58,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:13:58,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:13:58,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:13:58,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:13:58,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1368723103, now seen corresponding path program 1 times [2020-11-09 17:13:58,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:13:58,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604576020] [2020-11-09 17:13:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:13:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:13:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:13:58,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604576020] [2020-11-09 17:13:58,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:13:58,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:13:58,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [808766836] [2020-11-09 17:13:58,683 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:13:58,684 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:13:58,689 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-11-09 17:13:58,692 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:13:58,731 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 17:13:58,732 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 17:13:58,749 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:13:58,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:13:58,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:13:58,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:13:58,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:13:58,756 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 4 states. [2020-11-09 17:13:58,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:13:58,798 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-11-09 17:13:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:13:58,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-09 17:13:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:13:58,803 INFO L225 Difference]: With dead ends: 56 [2020-11-09 17:13:58,803 INFO L226 Difference]: Without dead ends: 40 [2020-11-09 17:13:58,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:13:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-09 17:13:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-09 17:13:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-09 17:13:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-11-09 17:13:58,814 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-11-09 17:13:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:13:58,814 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-11-09 17:13:58,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:13:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-11-09 17:13:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:13:58,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:13:58,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:13:58,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:13:58,817 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:13:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:13:58,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1081707285, now seen corresponding path program 1 times [2020-11-09 17:13:58,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:13:58,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837970234] [2020-11-09 17:13:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:13:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:13:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:13:58,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837970234] [2020-11-09 17:13:58,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:13:58,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:13:58,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [79610134] [2020-11-09 17:13:58,928 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:13:58,929 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:13:58,931 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-11-09 17:13:58,931 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:13:59,049 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:13:59,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:13:59,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:13:59,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:13:59,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:13:59,052 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-11-09 17:13:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:13:59,119 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-11-09 17:13:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:13:59,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-09 17:13:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:13:59,120 INFO L225 Difference]: With dead ends: 35 [2020-11-09 17:13:59,121 INFO L226 Difference]: Without dead ends: 28 [2020-11-09 17:13:59,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:13:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-09 17:13:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-09 17:13:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-09 17:13:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-11-09 17:13:59,130 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-11-09 17:13:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:13:59,130 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-11-09 17:13:59,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:13:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-11-09 17:13:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:13:59,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:13:59,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:13:59,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:13:59,132 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:13:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:13:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash 370642726, now seen corresponding path program 1 times [2020-11-09 17:13:59,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:13:59,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432390845] [2020-11-09 17:13:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:13:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:13:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:13:59,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432390845] [2020-11-09 17:13:59,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:13:59,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:13:59,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [519250799] [2020-11-09 17:13:59,238 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:13:59,240 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:13:59,243 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-11-09 17:13:59,244 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:13:59,266 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:13:59,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:13:59,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:13:59,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:13:59,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:13:59,270 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-11-09 17:13:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:13:59,303 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-11-09 17:13:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:13:59,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 17:13:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:13:59,304 INFO L225 Difference]: With dead ends: 35 [2020-11-09 17:13:59,305 INFO L226 Difference]: Without dead ends: 22 [2020-11-09 17:13:59,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:13:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-09 17:13:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-09 17:13:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-09 17:13:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-11-09 17:13:59,314 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-11-09 17:13:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:13:59,314 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-11-09 17:13:59,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:13:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-11-09 17:13:59,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:13:59,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:13:59,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:13:59,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:13:59,319 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:13:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:13:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash -7959878, now seen corresponding path program 2 times [2020-11-09 17:13:59,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:13:59,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620574391] [2020-11-09 17:13:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:13:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:13:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:13:59,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620574391] [2020-11-09 17:13:59,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:13:59,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:13:59,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [66356760] [2020-11-09 17:13:59,409 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:13:59,410 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:13:59,412 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-11-09 17:13:59,413 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:13:59,424 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:13:59,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:13:59,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:13:59,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:13:59,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:13:59,426 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-11-09 17:13:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:13:59,449 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-11-09 17:13:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:13:59,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 17:13:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:13:59,450 INFO L225 Difference]: With dead ends: 21 [2020-11-09 17:13:59,451 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:13:59,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:13:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:13:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:13:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:13:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:13:59,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-09 17:13:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:13:59,452 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:13:59,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:13:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:13:59,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:13:59,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:13:59,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:13:59 BasicIcfg [2020-11-09 17:13:59,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:13:59,460 INFO L168 Benchmark]: Toolchain (without parser) took 7698.32 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.5 MB in the beginning and 160.7 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:13:59,462 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:13:59,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 805.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 125.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-11-09 17:13:59,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 124.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:13:59,471 INFO L168 Benchmark]: Boogie Preprocessor took 37.65 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 122.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:13:59,471 INFO L168 Benchmark]: RCFGBuilder took 644.62 ms. Allocated memory is still 151.0 MB. Free memory was 122.7 MB in the beginning and 103.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-09 17:13:59,472 INFO L168 Benchmark]: TraceAbstraction took 6143.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.8 MB in the beginning and 160.7 MB in the end (delta: -57.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:13:59,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 805.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 125.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 124.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.65 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 122.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 644.62 ms. Allocated memory is still 151.0 MB. Free memory was 122.7 MB in the beginning and 103.1 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6143.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.8 MB in the beginning and 160.7 MB in the end (delta: -57.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 439 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 17 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 68 PlacesBefore, 22 PlacesAfterwards, 64 TransitionsBefore, 15 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 1620 MoverChecksTotal - PositiveResult [Line: 17]: 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 3 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 58 SDtfs, 46 SDslu, 50 SDs, 0 SdLazy, 32 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 815 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...