/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:42:20,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:42:20,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:42:20,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:42:20,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:42:20,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:42:20,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:42:20,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:42:20,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:42:20,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:42:20,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:42:20,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:42:20,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:42:20,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:42:20,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:42:20,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:42:20,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:42:20,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:42:20,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:42:20,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:42:20,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:42:20,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:42:20,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:42:20,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:42:20,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:42:20,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:42:20,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:42:20,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:42:20,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:42:20,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:42:20,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:42:20,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:42:20,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:42:20,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:42:20,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:42:20,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:42:20,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-20 14:42:20,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:42:20,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:42:20,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:42:20,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:42:20,640 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:42:20,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:42:20,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:42:20,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:42:20,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:42:20,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:42:20,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:42:20,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:42:20,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:42:20,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:42:20,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:42:20,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:42:20,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:42:20,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:42:20,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:42:20,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:42:20,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:42:20,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:42:20,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:42:20,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:42:20,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:42:20,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:42:20,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:42:20,645 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:42:20,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:42:20,645 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:42:20,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:42:21,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:42:21,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:42:21,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:42:21,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:42:21,042 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:42:21,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-01-20 14:42:21,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6789f27/baeff3d7270e4b7d8ea02c53b0847f62/FLAGd2aabf3d0 [2021-01-20 14:42:21,850 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:42:21,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-01-20 14:42:21,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6789f27/baeff3d7270e4b7d8ea02c53b0847f62/FLAGd2aabf3d0 [2021-01-20 14:42:22,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed6789f27/baeff3d7270e4b7d8ea02c53b0847f62 [2021-01-20 14:42:22,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:42:22,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:42:22,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:42:22,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:42:22,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:42:22,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6dfd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22, skipping insertion in model container [2021-01-20 14:42:22,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:42:22,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:42:22,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:42:22,633 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:42:22,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:42:22,778 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:42:22,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22 WrapperNode [2021-01-20 14:42:22,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:42:22,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:42:22,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:42:22,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:42:22,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:42:22,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:42:22,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:42:22,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:42:22,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (1/1) ... [2021-01-20 14:42:22,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:42:22,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:42:22,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:42:22,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:42:22,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (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 [2021-01-20 14:42:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:42:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:42:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:42:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:42:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:42:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:42:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:42:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:42:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:42:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:42:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:42:23,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:42:23,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:42:23,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:42:23,003 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:42:23,609 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:42:23,610 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:42:23,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:42:23 BoogieIcfgContainer [2021-01-20 14:42:23,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:42:23,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:42:23,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:42:23,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:42:23,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:42:22" (1/3) ... [2021-01-20 14:42:23,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33356901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:42:23, skipping insertion in model container [2021-01-20 14:42:23,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:42:22" (2/3) ... [2021-01-20 14:42:23,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33356901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:42:23, skipping insertion in model container [2021-01-20 14:42:23,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:42:23" (3/3) ... [2021-01-20 14:42:23,625 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2021-01-20 14:42:23,644 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:42:23,644 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:42:23,648 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:42:23,649 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:42:23,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,706 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,728 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,729 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:42:23,731 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:42:23,747 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:42:23,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:42:23,787 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:42:23,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:42:23,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:42:23,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:42:23,788 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:42:23,788 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:42:23,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:42:23,804 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 14:42:24,792 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:42:24,898 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:24,899 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:24,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:24,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1699432098, now seen corresponding path program 1 times [2021-01-20 14:42:24,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:24,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017698981] [2021-01-20 14:42:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:25,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017698981] [2021-01-20 14:42:25,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:25,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:42:25,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270685269] [2021-01-20 14:42:25,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:42:25,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:25,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:42:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:42:25,567 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:26,030 INFO L93 Difference]: Finished difference Result 13207 states and 46043 transitions. [2021-01-20 14:42:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:42:26,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-20 14:42:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:26,099 INFO L225 Difference]: With dead ends: 13207 [2021-01-20 14:42:26,099 INFO L226 Difference]: Without dead ends: 5052 [2021-01-20 14:42:26,101 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:42:26,101 INFO L78 Accepts]: Start accepts. Automaton has 5052 states. Word has length 41 [2021-01-20 14:42:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:26,103 INFO L481 AbstractCegarLoop]: Abstraction has 5052 states. [2021-01-20 14:42:26,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:26,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states. [2021-01-20 14:42:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:42:26,119 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:26,119 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:26,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:42:26,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1525823679, now seen corresponding path program 1 times [2021-01-20 14:42:26,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:26,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153608652] [2021-01-20 14:42:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:26,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153608652] [2021-01-20 14:42:26,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:26,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:42:26,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489361134] [2021-01-20 14:42:26,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:42:26,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:26,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:42:26,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:42:26,406 INFO L87 Difference]: Start difference. First operand 5052 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:26,664 INFO L93 Difference]: Finished difference Result 5472 states and 18560 transitions. [2021-01-20 14:42:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:42:26,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:42:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:26,709 INFO L225 Difference]: With dead ends: 5472 [2021-01-20 14:42:26,709 INFO L226 Difference]: Without dead ends: 4492 [2021-01-20 14:42:26,711 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:42:26,711 INFO L78 Accepts]: Start accepts. Automaton has 4492 states. Word has length 43 [2021-01-20 14:42:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:26,713 INFO L481 AbstractCegarLoop]: Abstraction has 4492 states. [2021-01-20 14:42:26,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:26,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states. [2021-01-20 14:42:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 14:42:26,729 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:26,729 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:26,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:42:26,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1998767231, now seen corresponding path program 1 times [2021-01-20 14:42:26,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:26,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076307972] [2021-01-20 14:42:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:26,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076307972] [2021-01-20 14:42:26,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:26,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:42:26,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483798997] [2021-01-20 14:42:26,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:42:26,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:42:26,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:42:26,931 INFO L87 Difference]: Start difference. First operand 4492 states. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:27,177 INFO L93 Difference]: Finished difference Result 5604 states and 18838 transitions. [2021-01-20 14:42:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:42:27,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-20 14:42:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:27,205 INFO L225 Difference]: With dead ends: 5604 [2021-01-20 14:42:27,205 INFO L226 Difference]: Without dead ends: 2965 [2021-01-20 14:42:27,206 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:42:27,206 INFO L78 Accepts]: Start accepts. Automaton has 2965 states. Word has length 44 [2021-01-20 14:42:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:27,207 INFO L481 AbstractCegarLoop]: Abstraction has 2965 states. [2021-01-20 14:42:27,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:27,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states. [2021-01-20 14:42:27,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:42:27,217 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:27,217 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:27,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:42:27,218 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:27,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1999585892, now seen corresponding path program 1 times [2021-01-20 14:42:27,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:27,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590981358] [2021-01-20 14:42:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:27,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590981358] [2021-01-20 14:42:27,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:27,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:42:27,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206070513] [2021-01-20 14:42:27,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:42:27,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:27,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:42:27,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:42:27,314 INFO L87 Difference]: Start difference. First operand 2965 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:27,474 INFO L93 Difference]: Finished difference Result 4677 states and 15065 transitions. [2021-01-20 14:42:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:42:27,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:42:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:27,513 INFO L225 Difference]: With dead ends: 4677 [2021-01-20 14:42:27,513 INFO L226 Difference]: Without dead ends: 3349 [2021-01-20 14:42:27,514 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:42:27,517 INFO L78 Accepts]: Start accepts. Automaton has 3349 states. Word has length 47 [2021-01-20 14:42:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:27,518 INFO L481 AbstractCegarLoop]: Abstraction has 3349 states. [2021-01-20 14:42:27,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states. [2021-01-20 14:42:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:42:27,530 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:27,531 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:27,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:42:27,531 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2040811581, now seen corresponding path program 1 times [2021-01-20 14:42:27,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:27,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912930424] [2021-01-20 14:42:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912930424] [2021-01-20 14:42:27,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:27,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:42:27,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35297436] [2021-01-20 14:42:27,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:42:27,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:27,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:42:27,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:42:27,721 INFO L87 Difference]: Start difference. First operand 3349 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:27,956 INFO L93 Difference]: Finished difference Result 4005 states and 12589 transitions. [2021-01-20 14:42:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:42:27,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:42:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:27,971 INFO L225 Difference]: With dead ends: 4005 [2021-01-20 14:42:27,972 INFO L226 Difference]: Without dead ends: 3053 [2021-01-20 14:42:27,972 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:42:27,972 INFO L78 Accepts]: Start accepts. Automaton has 3053 states. Word has length 48 [2021-01-20 14:42:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:27,973 INFO L481 AbstractCegarLoop]: Abstraction has 3053 states. [2021-01-20 14:42:27,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states. [2021-01-20 14:42:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:42:27,985 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:27,993 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:27,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:42:27,993 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash 482269470, now seen corresponding path program 1 times [2021-01-20 14:42:27,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:27,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037468992] [2021-01-20 14:42:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:28,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037468992] [2021-01-20 14:42:28,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:28,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:42:28,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504282811] [2021-01-20 14:42:28,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:42:28,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:28,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:42:28,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:42:28,180 INFO L87 Difference]: Start difference. First operand 3053 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:28,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:28,372 INFO L93 Difference]: Finished difference Result 2915 states and 8883 transitions. [2021-01-20 14:42:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:42:28,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:42:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:28,383 INFO L225 Difference]: With dead ends: 2915 [2021-01-20 14:42:28,383 INFO L226 Difference]: Without dead ends: 2123 [2021-01-20 14:42:28,384 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:42:28,384 INFO L78 Accepts]: Start accepts. Automaton has 2123 states. Word has length 49 [2021-01-20 14:42:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:28,386 INFO L481 AbstractCegarLoop]: Abstraction has 2123 states. [2021-01-20 14:42:28,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states. [2021-01-20 14:42:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:42:28,393 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:28,394 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:28,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:42:28,394 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1054282365, now seen corresponding path program 1 times [2021-01-20 14:42:28,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:28,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732276529] [2021-01-20 14:42:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:28,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732276529] [2021-01-20 14:42:28,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:28,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:42:28,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172112075] [2021-01-20 14:42:28,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:42:28,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:28,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:42:28,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:42:28,550 INFO L87 Difference]: Start difference. First operand 2123 states. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:28,788 INFO L93 Difference]: Finished difference Result 1502 states and 4359 transitions. [2021-01-20 14:42:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:42:28,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-20 14:42:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:28,793 INFO L225 Difference]: With dead ends: 1502 [2021-01-20 14:42:28,794 INFO L226 Difference]: Without dead ends: 730 [2021-01-20 14:42:28,794 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:42:28,794 INFO L78 Accepts]: Start accepts. Automaton has 730 states. Word has length 51 [2021-01-20 14:42:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:28,795 INFO L481 AbstractCegarLoop]: Abstraction has 730 states. [2021-01-20 14:42:28,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states. [2021-01-20 14:42:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 14:42:28,798 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:42:28,798 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:42:28,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:42:28,799 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:42:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:42:28,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1449884732, now seen corresponding path program 1 times [2021-01-20 14:42:28,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:42:28,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419000490] [2021-01-20 14:42:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:42:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:42:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:42:28,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419000490] [2021-01-20 14:42:28,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:42:28,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:42:28,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968149149] [2021-01-20 14:42:28,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:42:28,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:42:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:42:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:42:28,944 INFO L87 Difference]: Start difference. First operand 730 states. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:29,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:42:29,003 INFO L93 Difference]: Finished difference Result 622 states and 1724 transitions. [2021-01-20 14:42:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 14:42:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-01-20 14:42:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:42:29,004 INFO L225 Difference]: With dead ends: 622 [2021-01-20 14:42:29,004 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:42:29,005 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-20 14:42:29,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 53 [2021-01-20 14:42:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:42:29,005 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:42:29,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:42:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:42:29,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:42:29,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:42:29,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:42:29 BasicIcfg [2021-01-20 14:42:29,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:42:29,019 INFO L168 Benchmark]: Toolchain (without parser) took 6898.04 ms. Allocated memory was 302.0 MB in the beginning and 616.6 MB in the end (delta: 314.6 MB). Free memory was 277.0 MB in the beginning and 461.5 MB in the end (delta: -184.5 MB). Peak memory consumption was 132.7 MB. Max. memory is 16.0 GB. [2021-01-20 14:42:29,020 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:42:29,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.35 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:42:29,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:42:29,022 INFO L168 Benchmark]: Boogie Preprocessor took 53.97 ms. Allocated memory is still 302.0 MB. Free memory was 244.2 MB in the beginning and 284.6 MB in the end (delta: -40.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:42:29,023 INFO L168 Benchmark]: RCFGBuilder took 724.75 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 261.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:42:29,026 INFO L168 Benchmark]: TraceAbstraction took 5393.66 ms. Allocated memory was 302.0 MB in the beginning and 616.6 MB in the end (delta: 314.6 MB). Free memory was 260.5 MB in the beginning and 461.5 MB in the end (delta: -201.0 MB). Peak memory consumption was 115.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:42:29,036 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 662.35 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 53.97 ms. Allocated memory is still 302.0 MB. Free memory was 244.2 MB in the beginning and 284.6 MB in the end (delta: -40.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * RCFGBuilder took 724.75 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 261.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5393.66 ms. Allocated memory was 302.0 MB in the beginning and 616.6 MB in the end (delta: 314.6 MB). Free memory was 260.5 MB in the beginning and 461.5 MB in the end (delta: -201.0 MB). Peak memory consumption was 115.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 756 SDtfs, 1066 SDslu, 2389 SDs, 0 SdLazy, 280 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 368 ConstructedInterpolants, 0 QuantifiedInterpolants, 43970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...