/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-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:13:59,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:13:59,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:13:59,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:13:59,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:13:59,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:13:59,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:13:59,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:13:59,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:13:59,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:13:59,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:13:59,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:13:59,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:13:59,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:13:59,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:13:59,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:13:59,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:13:59,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:13:59,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:13:59,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:13:59,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:13:59,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:13:59,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:13:59,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:13:59,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:13:59,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:13:59,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:13:59,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:13:59,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:13:59,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:13:59,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:13:59,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:13:59,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:13:59,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:13:59,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:13:59,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:13:59,334 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-New_States.epf [2020-11-12 12:13:59,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:13:59,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:13:59,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:13:59,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:13:59,388 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:13:59,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:13:59,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:13:59,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:13:59,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:13:59,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:13:59,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:13:59,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:13:59,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:13:59,390 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:13:59,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:13:59,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:13:59,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:13:59,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:13:59,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:13:59,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:13:59,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:13:59,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:13:59,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:13:59,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:13:59,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:13:59,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:13:59,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:13:59,393 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:13:59,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:13:59,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:13:59,394 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:13:59,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:13:59,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:13:59,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:13:59,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:13:59,843 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:13:59,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-11-12 12:13:59,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e98bd92/1eb0297e864e4041bfa989ac3b66261a/FLAGbafdf07df [2020-11-12 12:14:00,759 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:14:00,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-11-12 12:14:00,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e98bd92/1eb0297e864e4041bfa989ac3b66261a/FLAGbafdf07df [2020-11-12 12:14:01,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e98bd92/1eb0297e864e4041bfa989ac3b66261a [2020-11-12 12:14:01,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:14:01,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:14:01,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:14:01,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:14:01,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:14:01,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c06693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01, skipping insertion in model container [2020-11-12 12:14:01,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:14:01,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:14:01,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:14:01,506 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:14:01,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:14:01,663 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:14:01,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01 WrapperNode [2020-11-12 12:14:01,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:14:01,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:14:01,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:14:01,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:14:01,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:14:01,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:14:01,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:14:01,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:14:01,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... [2020-11-12 12:14:01,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:14:01,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:14:01,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:14:01,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:14:01,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:14:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:14:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:14:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:14:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:14:01,814 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:14:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:14:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:14:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:14:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:14:01,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:14:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:14:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:14:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:14:01,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:14:01,817 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:14:02,480 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:14:02,481 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:14:02,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:02 BoogieIcfgContainer [2020-11-12 12:14:02,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:14:02,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:14:02,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:14:02,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:14:02,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:01" (1/3) ... [2020-11-12 12:14:02,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dba224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:02, skipping insertion in model container [2020-11-12 12:14:02,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:01" (2/3) ... [2020-11-12 12:14:02,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dba224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:02, skipping insertion in model container [2020-11-12 12:14:02,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:02" (3/3) ... [2020-11-12 12:14:02,493 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-11-12 12:14:02,511 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:14:02,512 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:14:02,517 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:14:02,518 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:14:02,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,559 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,561 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,562 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,562 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,568 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,568 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,578 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,578 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:02,582 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:14:02,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:14:02,619 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:14:02,619 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:14:02,620 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:14:02,620 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:14:02,620 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:14:02,620 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:14:02,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:14:02,620 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:14:02,633 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:14:03,455 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) [2020-11-12 12:14:04,541 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 1082ms [2020-11-12 12:14:04,653 WARN L456 BasicCegarLoop]: Sleep set: input automaton 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) [2020-11-12 12:14:04,748 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34368 states, 31247 states have (on average 1.213908535219381) internal successors, (37931), 34367 states have internal predecessors, (37931), 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) [2020-11-12 12:14:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 34368 states, 31247 states have (on average 1.213908535219381) internal successors, (37931), 34367 states have internal predecessors, (37931), 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) [2020-11-12 12:14:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 12:14:04,823 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:04,824 INFO L494 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] [2020-11-12 12:14:04,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:04,833 INFO L82 PathProgramCache]: Analyzing trace with hash -578983952, now seen corresponding path program 1 times [2020-11-12 12:14:04,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:04,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160256210] [2020-11-12 12:14:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:05,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160256210] [2020-11-12 12:14:05,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:05,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:05,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027480893] [2020-11-12 12:14:05,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:05,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:05,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:05,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:05,580 INFO L87 Difference]: Start difference. First operand has 34368 states, 31247 states have (on average 1.213908535219381) internal successors, (37931), 34367 states have internal predecessors, (37931), 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) [2020-11-12 12:14:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:06,001 INFO L93 Difference]: Finished difference Result 14850 states and 17740 transitions. [2020-11-12 12:14:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:06,004 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 [2020-11-12 12:14:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:06,062 INFO L225 Difference]: With dead ends: 14850 [2020-11-12 12:14:06,062 INFO L226 Difference]: Without dead ends: 4443 [2020-11-12 12:14:06,064 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2020-11-12 12:14:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4443. [2020-11-12 12:14:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4443 states, 4198 states have (on average 1.3658885183420677) internal successors, (5734), 4442 states have internal predecessors, (5734), 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) [2020-11-12 12:14:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 5734 transitions. [2020-11-12 12:14:06,329 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 5734 transitions. Word has length 41 [2020-11-12 12:14:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:06,330 INFO L481 AbstractCegarLoop]: Abstraction has 4443 states and 5734 transitions. [2020-11-12 12:14:06,330 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) [2020-11-12 12:14:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 5734 transitions. [2020-11-12 12:14:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 12:14:06,337 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:06,337 INFO L494 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] [2020-11-12 12:14:06,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:14:06,338 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:06,339 INFO L82 PathProgramCache]: Analyzing trace with hash 210612239, now seen corresponding path program 1 times [2020-11-12 12:14:06,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:06,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032217061] [2020-11-12 12:14:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:06,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032217061] [2020-11-12 12:14:06,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:06,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:06,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786337134] [2020-11-12 12:14:06,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:06,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:06,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:06,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:06,510 INFO L87 Difference]: Start difference. First operand 4443 states and 5734 transitions. 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) [2020-11-12 12:14:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:06,740 INFO L93 Difference]: Finished difference Result 5454 states and 6928 transitions. [2020-11-12 12:14:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:06,741 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 [2020-11-12 12:14:06,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:06,763 INFO L225 Difference]: With dead ends: 5454 [2020-11-12 12:14:06,764 INFO L226 Difference]: Without dead ends: 4183 [2020-11-12 12:14:06,765 INFO L749 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 [2020-11-12 12:14:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2020-11-12 12:14:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4183. [2020-11-12 12:14:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 3952 states have (on average 1.355263157894737) internal successors, (5356), 4182 states have internal predecessors, (5356), 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) [2020-11-12 12:14:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 5356 transitions. [2020-11-12 12:14:06,950 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 5356 transitions. Word has length 43 [2020-11-12 12:14:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:06,950 INFO L481 AbstractCegarLoop]: Abstraction has 4183 states and 5356 transitions. [2020-11-12 12:14:06,950 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) [2020-11-12 12:14:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 5356 transitions. [2020-11-12 12:14:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:14:06,958 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:06,958 INFO L494 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] [2020-11-12 12:14:06,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:14:06,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:06,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2059791707, now seen corresponding path program 1 times [2020-11-12 12:14:06,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:06,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149023711] [2020-11-12 12:14:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:07,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149023711] [2020-11-12 12:14:07,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:07,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:07,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401874976] [2020-11-12 12:14:07,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:07,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:07,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:07,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:07,142 INFO L87 Difference]: Start difference. First operand 4183 states and 5356 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2020-11-12 12:14:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:07,409 INFO L93 Difference]: Finished difference Result 7697 states and 9671 transitions. [2020-11-12 12:14:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:07,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 [2020-11-12 12:14:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:07,432 INFO L225 Difference]: With dead ends: 7697 [2020-11-12 12:14:07,432 INFO L226 Difference]: Without dead ends: 4467 [2020-11-12 12:14:07,433 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2020-11-12 12:14:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 3242. [2020-11-12 12:14:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3242 states, 3067 states have (on average 1.3612650798826214) internal successors, (4175), 3241 states have internal predecessors, (4175), 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) [2020-11-12 12:14:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4175 transitions. [2020-11-12 12:14:07,601 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4175 transitions. Word has length 44 [2020-11-12 12:14:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:07,602 INFO L481 AbstractCegarLoop]: Abstraction has 3242 states and 4175 transitions. [2020-11-12 12:14:07,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2020-11-12 12:14:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4175 transitions. [2020-11-12 12:14:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-12 12:14:07,608 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:07,608 INFO L494 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] [2020-11-12 12:14:07,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:14:07,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:07,612 INFO L82 PathProgramCache]: Analyzing trace with hash -86030320, now seen corresponding path program 1 times [2020-11-12 12:14:07,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:07,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092705049] [2020-11-12 12:14:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:07,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092705049] [2020-11-12 12:14:07,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:07,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:07,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930047458] [2020-11-12 12:14:07,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:07,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:07,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:07,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:07,765 INFO L87 Difference]: Start difference. First operand 3242 states and 4175 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2020-11-12 12:14:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:07,974 INFO L93 Difference]: Finished difference Result 3568 states and 4541 transitions. [2020-11-12 12:14:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2020-11-12 12:14:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:07,987 INFO L225 Difference]: With dead ends: 3568 [2020-11-12 12:14:07,987 INFO L226 Difference]: Without dead ends: 2484 [2020-11-12 12:14:07,987 INFO L749 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 [2020-11-12 12:14:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2020-11-12 12:14:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2484. [2020-11-12 12:14:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2359 states have (on average 1.3590504451038576) internal successors, (3206), 2483 states have internal predecessors, (3206), 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) [2020-11-12 12:14:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3206 transitions. [2020-11-12 12:14:08,051 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3206 transitions. Word has length 45 [2020-11-12 12:14:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:08,052 INFO L481 AbstractCegarLoop]: Abstraction has 2484 states and 3206 transitions. [2020-11-12 12:14:08,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2020-11-12 12:14:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3206 transitions. [2020-11-12 12:14:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:14:08,057 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:08,057 INFO L494 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] [2020-11-12 12:14:08,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:14:08,058 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:08,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1245197841, now seen corresponding path program 1 times [2020-11-12 12:14:08,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:08,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347524455] [2020-11-12 12:14:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:08,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347524455] [2020-11-12 12:14:08,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:08,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:08,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936071539] [2020-11-12 12:14:08,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:08,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:08,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:08,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:08,197 INFO L87 Difference]: Start difference. First operand 2484 states and 3206 transitions. 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) [2020-11-12 12:14:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:08,417 INFO L93 Difference]: Finished difference Result 2908 states and 3574 transitions. [2020-11-12 12:14:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:08,419 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 [2020-11-12 12:14:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:08,429 INFO L225 Difference]: With dead ends: 2908 [2020-11-12 12:14:08,430 INFO L226 Difference]: Without dead ends: 2363 [2020-11-12 12:14:08,430 INFO L749 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 [2020-11-12 12:14:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-11-12 12:14:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2020-11-12 12:14:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2243 states have (on average 1.3290236290682123) internal successors, (2981), 2362 states have internal predecessors, (2981), 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) [2020-11-12 12:14:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 2981 transitions. [2020-11-12 12:14:08,542 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 2981 transitions. Word has length 47 [2020-11-12 12:14:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:08,542 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 2981 transitions. [2020-11-12 12:14:08,543 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) [2020-11-12 12:14:08,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 2981 transitions. [2020-11-12 12:14:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:14:08,551 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:08,552 INFO L494 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] [2020-11-12 12:14:08,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:14:08,552 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:08,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1629720489, now seen corresponding path program 1 times [2020-11-12 12:14:08,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:08,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568279319] [2020-11-12 12:14:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:08,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568279319] [2020-11-12 12:14:08,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:08,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:08,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321952061] [2020-11-12 12:14:08,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:08,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:08,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:08,816 INFO L87 Difference]: Start difference. First operand 2363 states and 2981 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2020-11-12 12:14:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:09,006 INFO L93 Difference]: Finished difference Result 3539 states and 4518 transitions. [2020-11-12 12:14:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:14:09,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2020-11-12 12:14:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:09,018 INFO L225 Difference]: With dead ends: 3539 [2020-11-12 12:14:09,018 INFO L226 Difference]: Without dead ends: 1899 [2020-11-12 12:14:09,018 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-11-12 12:14:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1899. [2020-11-12 12:14:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1799 states have (on average 1.2779321845469704) internal successors, (2299), 1898 states have internal predecessors, (2299), 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) [2020-11-12 12:14:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2299 transitions. [2020-11-12 12:14:09,066 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2299 transitions. Word has length 48 [2020-11-12 12:14:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:09,068 INFO L481 AbstractCegarLoop]: Abstraction has 1899 states and 2299 transitions. [2020-11-12 12:14:09,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2020-11-12 12:14:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2299 transitions. [2020-11-12 12:14:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:14:09,072 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:09,072 INFO L494 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] [2020-11-12 12:14:09,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:14:09,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash 508300341, now seen corresponding path program 1 times [2020-11-12 12:14:09,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:09,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530224163] [2020-11-12 12:14:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:09,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530224163] [2020-11-12 12:14:09,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:09,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:09,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701123311] [2020-11-12 12:14:09,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:09,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:09,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:09,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:09,270 INFO L87 Difference]: Start difference. First operand 1899 states and 2299 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2020-11-12 12:14:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:09,697 INFO L93 Difference]: Finished difference Result 2718 states and 3146 transitions. [2020-11-12 12:14:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-12 12:14:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2020-11-12 12:14:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:09,705 INFO L225 Difference]: With dead ends: 2718 [2020-11-12 12:14:09,706 INFO L226 Difference]: Without dead ends: 1544 [2020-11-12 12:14:09,707 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-11-12 12:14:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-11-12 12:14:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2020-11-12 12:14:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1464 states have (on average 1.2336065573770492) internal successors, (1806), 1543 states have internal predecessors, (1806), 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) [2020-11-12 12:14:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1806 transitions. [2020-11-12 12:14:09,775 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1806 transitions. Word has length 48 [2020-11-12 12:14:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:09,775 INFO L481 AbstractCegarLoop]: Abstraction has 1544 states and 1806 transitions. [2020-11-12 12:14:09,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2020-11-12 12:14:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1806 transitions. [2020-11-12 12:14:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:14:09,779 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:09,780 INFO L494 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] [2020-11-12 12:14:09,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:14:09,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:09,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:09,780 INFO L82 PathProgramCache]: Analyzing trace with hash -322406271, now seen corresponding path program 1 times [2020-11-12 12:14:09,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:09,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681522260] [2020-11-12 12:14:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:09,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681522260] [2020-11-12 12:14:09,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:09,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:09,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293046977] [2020-11-12 12:14:09,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:09,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:09,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:09,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:09,925 INFO L87 Difference]: Start difference. First operand 1544 states and 1806 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2020-11-12 12:14:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:10,039 INFO L93 Difference]: Finished difference Result 1588 states and 1822 transitions. [2020-11-12 12:14:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:14:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 [2020-11-12 12:14:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:10,046 INFO L225 Difference]: With dead ends: 1588 [2020-11-12 12:14:10,046 INFO L226 Difference]: Without dead ends: 1502 [2020-11-12 12:14:10,047 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-12 12:14:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-11-12 12:14:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1502. [2020-11-12 12:14:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1424 states have (on average 1.2191011235955056) internal successors, (1736), 1501 states have internal predecessors, (1736), 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) [2020-11-12 12:14:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1736 transitions. [2020-11-12 12:14:10,081 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1736 transitions. Word has length 49 [2020-11-12 12:14:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:10,082 INFO L481 AbstractCegarLoop]: Abstraction has 1502 states and 1736 transitions. [2020-11-12 12:14:10,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2020-11-12 12:14:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1736 transitions. [2020-11-12 12:14:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:14:10,086 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:10,086 INFO L494 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] [2020-11-12 12:14:10,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 12:14:10,086 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:10,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1115543646, now seen corresponding path program 1 times [2020-11-12 12:14:10,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:10,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35333063] [2020-11-12 12:14:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:10,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35333063] [2020-11-12 12:14:10,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:10,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:10,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707528460] [2020-11-12 12:14:10,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:10,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:10,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:10,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:10,196 INFO L87 Difference]: Start difference. First operand 1502 states and 1736 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2020-11-12 12:14:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:10,330 INFO L93 Difference]: Finished difference Result 1413 states and 1547 transitions. [2020-11-12 12:14:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:10,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2020-11-12 12:14:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:10,336 INFO L225 Difference]: With dead ends: 1413 [2020-11-12 12:14:10,336 INFO L226 Difference]: Without dead ends: 1203 [2020-11-12 12:14:10,337 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-12 12:14:10,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-11-12 12:14:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-11-12 12:14:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1140 states have (on average 1.1596491228070176) internal successors, (1322), 1202 states have internal predecessors, (1322), 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) [2020-11-12 12:14:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1322 transitions. [2020-11-12 12:14:10,365 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1322 transitions. Word has length 50 [2020-11-12 12:14:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:10,365 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1322 transitions. [2020-11-12 12:14:10,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2020-11-12 12:14:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1322 transitions. [2020-11-12 12:14:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:14:10,368 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:10,368 INFO L494 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] [2020-11-12 12:14:10,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 12:14:10,368 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1955428885, now seen corresponding path program 1 times [2020-11-12 12:14:10,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:10,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731921264] [2020-11-12 12:14:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:10,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731921264] [2020-11-12 12:14:10,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:10,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:14:10,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120629405] [2020-11-12 12:14:10,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:14:10,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:10,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:14:10,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:14:10,485 INFO L87 Difference]: Start difference. First operand 1203 states and 1322 transitions. 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) [2020-11-12 12:14:10,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:10,679 INFO L93 Difference]: Finished difference Result 871 states and 881 transitions. [2020-11-12 12:14:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:14:10,679 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 [2020-11-12 12:14:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:10,682 INFO L225 Difference]: With dead ends: 871 [2020-11-12 12:14:10,682 INFO L226 Difference]: Without dead ends: 504 [2020-11-12 12:14:10,682 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:14:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-12 12:14:10,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-12 12:14:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 477 states have (on average 1.0545073375262055) internal successors, (503), 503 states have internal predecessors, (503), 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) [2020-11-12 12:14:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 503 transitions. [2020-11-12 12:14:10,696 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 503 transitions. Word has length 51 [2020-11-12 12:14:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:10,696 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 503 transitions. [2020-11-12 12:14:10,696 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) [2020-11-12 12:14:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 503 transitions. [2020-11-12 12:14:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:14:10,698 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:10,698 INFO L494 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] [2020-11-12 12:14:10,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 12:14:10,698 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:10,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1840730002, now seen corresponding path program 1 times [2020-11-12 12:14:10,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:10,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340909889] [2020-11-12 12:14:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:10,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340909889] [2020-11-12 12:14:10,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:10,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:10,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622508052] [2020-11-12 12:14:10,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:10,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:10,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:10,808 INFO L87 Difference]: Start difference. First operand 504 states and 503 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:14:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:10,899 INFO L93 Difference]: Finished difference Result 396 states and 395 transitions. [2020-11-12 12:14:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:14:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2020-11-12 12:14:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:10,900 INFO L225 Difference]: With dead ends: 396 [2020-11-12 12:14:10,900 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:14:10,900 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:14:10,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:14:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2020-11-12 12:14:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:14:10,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:14:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:10,902 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:14:10,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:14:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:14:10,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:14:10,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 12:14:10,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:14:10 BasicIcfg [2020-11-12 12:14:10,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:14:10,911 INFO L168 Benchmark]: Toolchain (without parser) took 9875.95 ms. Allocated memory was 302.0 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 276.0 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 162.0 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:10,911 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 302.0 MB. Free memory is still 270.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:14:10,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.57 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 276.8 MB in the end (delta: -1.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:10,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.38 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 275.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:14:10,914 INFO L168 Benchmark]: Boogie Preprocessor took 26.42 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 273.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:10,914 INFO L168 Benchmark]: RCFGBuilder took 743.37 ms. Allocated memory is still 302.0 MB. Free memory was 273.7 MB in the beginning and 250.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:10,915 INFO L168 Benchmark]: TraceAbstraction took 8422.89 ms. Allocated memory was 302.0 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 249.5 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 133.2 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:10,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 302.0 MB. Free memory is still 270.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 612.57 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 276.8 MB in the end (delta: -1.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.38 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 275.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.42 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 273.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 743.37 ms. Allocated memory is still 302.0 MB. Free memory was 273.7 MB in the beginning and 250.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8422.89 ms. Allocated memory was 302.0 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 249.5 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 133.2 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: 8.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 746 SDtfs, 818 SDslu, 2750 SDs, 0 SdLazy, 327 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34368occurred 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: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 1225 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 519 NumberOfCodeBlocks, 519 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 65258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...