/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:10:52,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:10:52,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:10:52,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:10:52,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:10:52,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:10:52,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:10:52,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:10:52,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:10:52,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:10:52,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:10:52,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:10:52,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:10:52,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:10:52,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:10:52,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:10:52,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:10:52,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:10:52,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:10:52,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:10:52,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:10:52,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:10:53,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:10:53,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:10:53,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:10:53,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:10:53,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:10:53,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:10:53,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:10:53,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:10:53,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:10:53,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:10:53,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:10:53,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:10:53,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:10:53,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:10:53,055 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 17:10:53,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:10:53,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:10:53,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:10:53,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:10:53,088 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:10:53,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:10:53,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:10:53,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:10:53,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:10:53,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:10:53,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:10:53,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:10:53,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:10:53,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:10:53,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:10:53,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:10:53,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:10:53,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:10:53,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:10:53,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:10:53,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:10:53,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:10:53,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:10:53,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:10:53,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:10:53,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:10:53,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:10:53,094 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:10:53,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:10:53,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:10:53,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:10:53,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:10:53,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:10:53,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:10:53,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:10:53,610 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:10:53,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-11-09 17:10:53,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ef94607/55450948a46744369298fd6fb27b595b/FLAG25e31a23a [2020-11-09 17:10:54,474 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:10:54,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-11-09 17:10:54,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ef94607/55450948a46744369298fd6fb27b595b/FLAG25e31a23a [2020-11-09 17:10:54,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ef94607/55450948a46744369298fd6fb27b595b [2020-11-09 17:10:54,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:10:54,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:10:54,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:10:54,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:10:54,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:10:54,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:10:54" (1/1) ... [2020-11-09 17:10:54,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd8f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:54, skipping insertion in model container [2020-11-09 17:10:54,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:10:54" (1/1) ... [2020-11-09 17:10:54,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:10:54,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:10:55,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:10:55,481 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:10:55,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:10:55,735 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:10:55,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55 WrapperNode [2020-11-09 17:10:55,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:10:55,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:10:55,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:10:55,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:10:55,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:10:55,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:10:55,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:10:55,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:10:55,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (1/1) ... [2020-11-09 17:10:55,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:10:55,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:10:55,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:10:55,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:10:55,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (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 17:10:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:10:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:10:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:10:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:10:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:10:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:10:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:10:55,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:10:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:10:55,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:10:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:10:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:10:55,962 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 17:10:56,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:10:56,546 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:10:56,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:10:56 BoogieIcfgContainer [2020-11-09 17:10:56,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:10:56,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:10:56,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:10:56,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:10:56,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:10:54" (1/3) ... [2020-11-09 17:10:56,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e893d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:10:56, skipping insertion in model container [2020-11-09 17:10:56,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:10:55" (2/3) ... [2020-11-09 17:10:56,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e893d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:10:56, skipping insertion in model container [2020-11-09 17:10:56,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:10:56" (3/3) ... [2020-11-09 17:10:56,561 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2020-11-09 17:10:56,583 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:10:56,583 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:10:56,588 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:10:56,589 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:10:56,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,634 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,634 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,635 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,635 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,635 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,635 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,643 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,643 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,648 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,648 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,655 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,662 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,662 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:10:56,668 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:10:56,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:10:56,713 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:10:56,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:10:56,713 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:10:56,714 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:10:56,714 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:10:56,714 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:10:56,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:10:56,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:10:56,729 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:10:56,729 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 17:10:56,733 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-09 17:10:56,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-09 17:10:56,787 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-09 17:10:56,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:10:56,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-09 17:10:56,796 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-09 17:11:00,029 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-09 17:11:00,229 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-09 17:11:00,533 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 17:11:00,679 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:11:00,936 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 17:11:01,051 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:11:01,110 INFO L131 LiptonReduction]: Checked pairs total: 2469 [2020-11-09 17:11:01,110 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 17:11:01,117 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:11:01,143 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-11-09 17:11:01,145 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-11-09 17:11:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:11:01,153 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:11:01,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:11:01,154 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:11:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:11:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1935178246, now seen corresponding path program 1 times [2020-11-09 17:11:01,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:11:01,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505235297] [2020-11-09 17:11:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:11:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:11:01,420 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 17:11:01,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505235297] [2020-11-09 17:11:01,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:11:01,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:11:01,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [413959118] [2020-11-09 17:11:01,424 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:11:01,429 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:11:01,447 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:11:01,449 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:11:01,455 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:11:01,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:11:01,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:11:01,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:11:01,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:11:01,482 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-11-09 17:11:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:11:01,505 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-09 17:11:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:11:01,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 17:11:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:11:01,522 INFO L225 Difference]: With dead ends: 274 [2020-11-09 17:11:01,523 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 17:11:01,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:11:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 17:11:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 17:11:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 17:11:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-09 17:11:01,636 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-09 17:11:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:11:01,637 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-09 17:11:01,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:11:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-09 17:11:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:11:01,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:11:01,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:11:01,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:11:01,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:11:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:11:01,642 INFO L82 PathProgramCache]: Analyzing trace with hash -139024564, now seen corresponding path program 1 times [2020-11-09 17:11:01,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:11:01,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487833563] [2020-11-09 17:11:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:11:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:11:01,800 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 17:11:01,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487833563] [2020-11-09 17:11:01,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:11:01,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:11:01,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [401402613] [2020-11-09 17:11:01,801 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:11:01,802 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:11:01,804 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 17:11:01,809 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:11:01,810 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:11:01,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:11:01,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:11:01,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:11:01,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:11:01,814 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 3 states. [2020-11-09 17:11:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:11:01,857 INFO L93 Difference]: Finished difference Result 172 states and 418 transitions. [2020-11-09 17:11:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:11:01,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 17:11:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:11:01,863 INFO L225 Difference]: With dead ends: 172 [2020-11-09 17:11:01,863 INFO L226 Difference]: Without dead ends: 172 [2020-11-09 17:11:01,864 INFO L677 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 [2020-11-09 17:11:01,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-09 17:11:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-11-09 17:11:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-09 17:11:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 418 transitions. [2020-11-09 17:11:01,901 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 418 transitions. Word has length 9 [2020-11-09 17:11:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:11:01,902 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 418 transitions. [2020-11-09 17:11:01,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:11:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 418 transitions. [2020-11-09 17:11:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:11:01,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:11:01,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:11:01,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:11:01,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:11:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:11:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1635413154, now seen corresponding path program 1 times [2020-11-09 17:11:01,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:11:01,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506885202] [2020-11-09 17:11:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:11:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:11:02,032 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 17:11:02,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506885202] [2020-11-09 17:11:02,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:11:02,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:11:02,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [819497554] [2020-11-09 17:11:02,034 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:11:02,035 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:11:02,038 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-11-09 17:11:02,038 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:11:02,087 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1886#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:11:02,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:11:02,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:11:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:11:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:11:02,089 INFO L87 Difference]: Start difference. First operand 172 states and 418 transitions. Second operand 5 states. [2020-11-09 17:11:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:11:02,120 INFO L93 Difference]: Finished difference Result 109 states and 229 transitions. [2020-11-09 17:11:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:11:02,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 17:11:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:11:02,123 INFO L225 Difference]: With dead ends: 109 [2020-11-09 17:11:02,123 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 17:11:02,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:11:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 17:11:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 17:11:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 17:11:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 229 transitions. [2020-11-09 17:11:02,132 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 229 transitions. Word has length 11 [2020-11-09 17:11:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:11:02,132 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 229 transitions. [2020-11-09 17:11:02,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:11:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 229 transitions. [2020-11-09 17:11:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:11:02,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:11:02,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:11:02,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:11:02,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:11:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:11:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash 395532943, now seen corresponding path program 1 times [2020-11-09 17:11:02,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:11:02,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552499625] [2020-11-09 17:11:02,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:11:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:11:02,241 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 17:11:02,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552499625] [2020-11-09 17:11:02,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:11:02,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:11:02,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [978831117] [2020-11-09 17:11:02,244 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:11:02,246 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:11:02,249 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-11-09 17:11:02,249 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:11:02,314 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2219#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:11:02,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 17:11:02,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:11:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 17:11:02,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 17:11:02,335 INFO L87 Difference]: Start difference. First operand 109 states and 229 transitions. Second operand 6 states. [2020-11-09 17:11:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:11:02,380 INFO L93 Difference]: Finished difference Result 85 states and 181 transitions. [2020-11-09 17:11:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:11:02,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-09 17:11:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:11:02,382 INFO L225 Difference]: With dead ends: 85 [2020-11-09 17:11:02,382 INFO L226 Difference]: Without dead ends: 85 [2020-11-09 17:11:02,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 17:11:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-09 17:11:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-09 17:11:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-09 17:11:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 181 transitions. [2020-11-09 17:11:02,388 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 181 transitions. Word has length 14 [2020-11-09 17:11:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:11:02,389 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 181 transitions. [2020-11-09 17:11:02,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 17:11:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 181 transitions. [2020-11-09 17:11:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:11:02,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:11:02,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:11:02,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:11:02,391 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:11:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:11:02,391 INFO L82 PathProgramCache]: Analyzing trace with hash 781717809, now seen corresponding path program 1 times [2020-11-09 17:11:02,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:11:02,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514774354] [2020-11-09 17:11:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:11:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:11:02,448 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 17:11:02,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514774354] [2020-11-09 17:11:02,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:11:02,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:11:02,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [48409019] [2020-11-09 17:11:02,449 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:11:02,452 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:11:02,457 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-11-09 17:11:02,457 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:11:02,465 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:11:02,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:11:02,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:11:02,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:11:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:11:02,467 INFO L87 Difference]: Start difference. First operand 85 states and 181 transitions. Second operand 4 states. [2020-11-09 17:11:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:11:02,497 INFO L93 Difference]: Finished difference Result 111 states and 227 transitions. [2020-11-09 17:11:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:11:02,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 17:11:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:11:02,499 INFO L225 Difference]: With dead ends: 111 [2020-11-09 17:11:02,499 INFO L226 Difference]: Without dead ends: 61 [2020-11-09 17:11:02,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 17:11:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-09 17:11:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-09 17:11:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-09 17:11:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 113 transitions. [2020-11-09 17:11:02,504 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 113 transitions. Word has length 17 [2020-11-09 17:11:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:11:02,504 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 113 transitions. [2020-11-09 17:11:02,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:11:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 113 transitions. [2020-11-09 17:11:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:11:02,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:11:02,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:11:02,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:11:02,506 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:11:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:11:02,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1128654861, now seen corresponding path program 2 times [2020-11-09 17:11:02,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:11:02,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606767515] [2020-11-09 17:11:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:11:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:11:02,567 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 17:11:02,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606767515] [2020-11-09 17:11:02,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:11:02,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:11:02,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [493735931] [2020-11-09 17:11:02,568 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:11:02,571 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:11:02,575 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 36 transitions. [2020-11-09 17:11:02,576 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:11:02,588 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:11:02,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:11:02,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:11:02,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:11:02,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:11:02,589 INFO L87 Difference]: Start difference. First operand 61 states and 113 transitions. Second operand 5 states. [2020-11-09 17:11:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:11:02,626 INFO L93 Difference]: Finished difference Result 81 states and 148 transitions. [2020-11-09 17:11:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:11:02,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-09 17:11:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:11:02,627 INFO L225 Difference]: With dead ends: 81 [2020-11-09 17:11:02,628 INFO L226 Difference]: Without dead ends: 55 [2020-11-09 17:11:02,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:11:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-09 17:11:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-09 17:11:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 17:11:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 101 transitions. [2020-11-09 17:11:02,631 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 101 transitions. Word has length 17 [2020-11-09 17:11:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:11:02,632 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 101 transitions. [2020-11-09 17:11:02,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:11:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 101 transitions. [2020-11-09 17:11:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:11:02,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:11:02,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:11:02,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:11:02,634 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:11:02,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:11:02,634 INFO L82 PathProgramCache]: Analyzing trace with hash -842301437, now seen corresponding path program 3 times [2020-11-09 17:11:02,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:11:02,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265739144] [2020-11-09 17:11:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:11:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:11:02,688 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 17:11:02,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265739144] [2020-11-09 17:11:02,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:11:02,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:11:02,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [680820368] [2020-11-09 17:11:02,689 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:11:02,691 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:11:02,699 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 83 transitions. [2020-11-09 17:11:02,699 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:11:02,826 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:11:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:11:02,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:11:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:11:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:11:02,828 INFO L87 Difference]: Start difference. First operand 55 states and 101 transitions. Second operand 5 states. [2020-11-09 17:11:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:11:02,862 INFO L93 Difference]: Finished difference Result 54 states and 100 transitions. [2020-11-09 17:11:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:11:02,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-09 17:11:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:11:02,863 INFO L225 Difference]: With dead ends: 54 [2020-11-09 17:11:02,863 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:11:02,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:11:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:11:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:11:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:11:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:11:02,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 17:11:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:11:02,865 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:11:02,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:11:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:11:02,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:11:02,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:11:02,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:11:02 BasicIcfg [2020-11-09 17:11:02,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:11:02,871 INFO L168 Benchmark]: Toolchain (without parser) took 8106.67 ms. Allocated memory was 155.2 MB in the beginning and 198.2 MB in the end (delta: 43.0 MB). Free memory was 130.0 MB in the beginning and 113.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 61.2 MB. Max. memory is 8.0 GB. [2020-11-09 17:11:02,872 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 128.3 MB in the end (delta: 123.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:11:02,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 965.94 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 132.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2020-11-09 17:11:02,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.07 ms. Allocated memory is still 155.2 MB. Free memory was 132.4 MB in the beginning and 130.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:11:02,874 INFO L168 Benchmark]: Boogie Preprocessor took 36.08 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 128.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:11:02,875 INFO L168 Benchmark]: RCFGBuilder took 713.35 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 107.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:11:02,876 INFO L168 Benchmark]: TraceAbstraction took 6317.52 ms. Allocated memory was 155.2 MB in the beginning and 198.2 MB in the end (delta: 43.0 MB). Free memory was 106.7 MB in the beginning and 113.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:11:02,880 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 128.3 MB in the end (delta: 123.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 965.94 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 132.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 61.07 ms. Allocated memory is still 155.2 MB. Free memory was 132.4 MB in the beginning and 130.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.08 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 128.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 713.35 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 107.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6317.52 ms. Allocated memory was 155.2 MB in the beginning and 198.2 MB in the end (delta: 43.0 MB). Free memory was 106.7 MB in the beginning and 113.2 MB in the end (delta: -6.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 741 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 38 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2469 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 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 120 SDtfs, 81 SDslu, 178 SDs, 0 SdLazy, 65 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...