/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:17:44,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:17:44,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:17:44,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:17:44,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:17:44,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:17:44,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:17:44,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:17:44,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:17:44,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:17:44,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:17:44,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:17:44,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:17:44,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:17:44,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:17:44,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:17:44,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:17:44,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:17:44,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:17:44,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:17:44,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:17:44,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:17:44,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:17:44,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:17:44,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:17:44,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:17:44,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:17:44,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:17:44,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:17:44,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:17:44,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:17:44,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:17:44,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:17:44,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:17:44,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:17:44,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:17:44,642 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-SemanticLbe.epf [2020-11-12 00:17:44,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:17:44,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:17:44,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:17:44,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:17:44,671 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:17:44,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:17:44,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:17:44,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:17:44,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:17:44,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:17:44,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:17:44,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:17:44,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:17:44,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:17:44,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:17:44,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:17:44,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:17:44,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:17:44,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:17:44,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:17:44,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:17:44,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:17:44,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:17:44,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:17:44,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:17:44,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:17:44,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:17:44,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:17:44,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:17:45,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:17:45,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:17:45,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:17:45,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:17:45,077 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:17:45,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-11-12 00:17:45,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd318a81d/c9943e2be0bc4bd1a733bb7fc97dd899/FLAG5d406bb2f [2020-11-12 00:17:45,831 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:17:45,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-11-12 00:17:45,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd318a81d/c9943e2be0bc4bd1a733bb7fc97dd899/FLAG5d406bb2f [2020-11-12 00:17:46,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd318a81d/c9943e2be0bc4bd1a733bb7fc97dd899 [2020-11-12 00:17:46,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:17:46,146 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:17:46,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:17:46,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:17:46,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:17:46,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e82ce52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46, skipping insertion in model container [2020-11-12 00:17:46,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:17:46,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:17:46,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:17:46,666 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:17:46,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:17:46,834 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:17:46,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46 WrapperNode [2020-11-12 00:17:46,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:17:46,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:17:46,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:17:46,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:17:46,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:17:46,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:17:46,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:17:46,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:17:46,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (1/1) ... [2020-11-12 00:17:46,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:17:46,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:17:46,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:17:46,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:17:46,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (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 00:17:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:17:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:17:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:17:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:17:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:17:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:17:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:17:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:17:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:17:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:17:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-12 00:17:47,048 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-12 00:17:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:17:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:17:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:17:47,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:17:47,050 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 00:17:47,504 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:17:47,505 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:17:47,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:17:47 BoogieIcfgContainer [2020-11-12 00:17:47,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:17:47,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:17:47,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:17:47,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:17:47,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:17:46" (1/3) ... [2020-11-12 00:17:47,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7868682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:17:47, skipping insertion in model container [2020-11-12 00:17:47,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:17:46" (2/3) ... [2020-11-12 00:17:47,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7868682c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:17:47, skipping insertion in model container [2020-11-12 00:17:47,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:17:47" (3/3) ... [2020-11-12 00:17:47,518 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-11-12 00:17:47,537 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:17:47,537 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:17:47,541 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:17:47,542 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:17:47,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,589 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,589 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,589 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,595 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,595 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,595 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,595 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,596 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,596 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,596 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,596 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,597 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,597 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,597 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,597 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,608 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,608 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,608 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,609 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,611 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,612 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,612 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,612 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,615 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,616 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:17:47,619 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:17:47,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-12 00:17:47,659 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:17:47,659 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:17:47,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:17:47,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:17:47,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:17:47,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:17:47,660 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:17:47,660 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:17:47,673 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:17:47,676 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 95 transitions, 210 flow [2020-11-12 00:17:47,679 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 95 transitions, 210 flow [2020-11-12 00:17:47,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 210 flow [2020-11-12 00:17:47,747 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-11-12 00:17:47,748 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:17:47,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-11-12 00:17:47,757 INFO L116 LiptonReduction]: Number of co-enabled transitions 2256 [2020-11-12 00:17:48,883 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-12 00:17:52,269 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-11-12 00:17:52,472 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-11-12 00:17:52,813 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-12 00:17:52,941 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-12 00:17:53,225 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-11-12 00:17:53,363 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-12 00:17:53,464 INFO L131 LiptonReduction]: Checked pairs total: 5480 [2020-11-12 00:17:53,465 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-11-12 00:17:53,474 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 27 transitions, 74 flow [2020-11-12 00:17:53,609 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1194 states, 1192 states have (on average 3.651006711409396) internal successors, (4352), 1193 states have internal predecessors, (4352), 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 00:17:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 1194 states, 1192 states have (on average 3.651006711409396) internal successors, (4352), 1193 states have internal predecessors, (4352), 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 00:17:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-12 00:17:53,632 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:17:53,633 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:17:53,634 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:17:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:17:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1069677488, now seen corresponding path program 1 times [2020-11-12 00:17:53,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:17:53,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530958996] [2020-11-12 00:17:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:17:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:17:53,900 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 00:17:53,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530958996] [2020-11-12 00:17:53,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:17:53,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:17:53,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051076412] [2020-11-12 00:17:53,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:17:53,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:17:53,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:17:53,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:17:53,938 INFO L87 Difference]: Start difference. First operand has 1194 states, 1192 states have (on average 3.651006711409396) internal successors, (4352), 1193 states have internal predecessors, (4352), 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 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 00:17:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:17:54,025 INFO L93 Difference]: Finished difference Result 1130 states and 4080 transitions. [2020-11-12 00:17:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:17:54,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2020-11-12 00:17:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:17:54,072 INFO L225 Difference]: With dead ends: 1130 [2020-11-12 00:17:54,072 INFO L226 Difference]: Without dead ends: 874 [2020-11-12 00:17:54,074 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:17:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-11-12 00:17:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2020-11-12 00:17:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 3.5005727376861397) internal successors, (3056), 873 states have internal predecessors, (3056), 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 00:17:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 3056 transitions. [2020-11-12 00:17:54,240 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 3056 transitions. Word has length 10 [2020-11-12 00:17:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:17:54,241 INFO L481 AbstractCegarLoop]: Abstraction has 874 states and 3056 transitions. [2020-11-12 00:17:54,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 00:17:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 3056 transitions. [2020-11-12 00:17:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:17:54,252 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:17:54,252 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:17:54,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:17:54,253 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:17:54,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:17:54,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1177390069, now seen corresponding path program 1 times [2020-11-12 00:17:54,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:17:54,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8402311] [2020-11-12 00:17:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:17:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:17:54,419 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 00:17:54,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8402311] [2020-11-12 00:17:54,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:17:54,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:17:54,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590364677] [2020-11-12 00:17:54,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:17:54,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:17:54,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:17:54,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:17:54,424 INFO L87 Difference]: Start difference. First operand 874 states and 3056 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:17:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:17:54,461 INFO L93 Difference]: Finished difference Result 1018 states and 3404 transitions. [2020-11-12 00:17:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:17:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2020-11-12 00:17:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:17:54,467 INFO L225 Difference]: With dead ends: 1018 [2020-11-12 00:17:54,468 INFO L226 Difference]: Without dead ends: 538 [2020-11-12 00:17:54,469 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:17:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-11-12 00:17:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-11-12 00:17:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 3.180633147113594) internal successors, (1708), 537 states have internal predecessors, (1708), 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 00:17:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1708 transitions. [2020-11-12 00:17:54,495 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1708 transitions. Word has length 11 [2020-11-12 00:17:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:17:54,495 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1708 transitions. [2020-11-12 00:17:54,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:17:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1708 transitions. [2020-11-12 00:17:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:17:54,497 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:17:54,497 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:17:54,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:17:54,498 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:17:54,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:17:54,499 INFO L82 PathProgramCache]: Analyzing trace with hash -888674429, now seen corresponding path program 1 times [2020-11-12 00:17:54,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:17:54,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803640732] [2020-11-12 00:17:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:17:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:17:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:17:54,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803640732] [2020-11-12 00:17:54,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:17:54,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:17:54,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830732654] [2020-11-12 00:17:54,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:17:54,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:17:54,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:17:54,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:17:54,571 INFO L87 Difference]: Start difference. First operand 538 states and 1708 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 00:17:54,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:17:54,583 INFO L93 Difference]: Finished difference Result 514 states and 1614 transitions. [2020-11-12 00:17:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:17:54,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2020-11-12 00:17:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:17:54,588 INFO L225 Difference]: With dead ends: 514 [2020-11-12 00:17:54,589 INFO L226 Difference]: Without dead ends: 514 [2020-11-12 00:17:54,589 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:17:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-11-12 00:17:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-11-12 00:17:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.146198830409357) internal successors, (1614), 513 states have internal predecessors, (1614), 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 00:17:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1614 transitions. [2020-11-12 00:17:54,612 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1614 transitions. Word has length 13 [2020-11-12 00:17:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:17:54,613 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1614 transitions. [2020-11-12 00:17:54,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 00:17:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1614 transitions. [2020-11-12 00:17:54,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-12 00:17:54,615 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:17:54,615 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:17:54,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:17:54,615 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:17:54,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:17:54,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1779105204, now seen corresponding path program 1 times [2020-11-12 00:17:54,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:17:54,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826013498] [2020-11-12 00:17:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:17:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:17:54,663 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 00:17:54,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826013498] [2020-11-12 00:17:54,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:17:54,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:17:54,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229360625] [2020-11-12 00:17:54,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:17:54,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:17:54,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:17:54,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:17:54,666 INFO L87 Difference]: Start difference. First operand 514 states and 1614 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 00:17:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:17:54,700 INFO L93 Difference]: Finished difference Result 586 states and 1800 transitions. [2020-11-12 00:17:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:17:54,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2020-11-12 00:17:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:17:54,704 INFO L225 Difference]: With dead ends: 586 [2020-11-12 00:17:54,704 INFO L226 Difference]: Without dead ends: 346 [2020-11-12 00:17:54,705 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:17:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-11-12 00:17:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2020-11-12 00:17:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.9101449275362317) internal successors, (1004), 345 states have internal predecessors, (1004), 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 00:17:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1004 transitions. [2020-11-12 00:17:54,718 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1004 transitions. Word has length 14 [2020-11-12 00:17:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:17:54,719 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 1004 transitions. [2020-11-12 00:17:54,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 00:17:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1004 transitions. [2020-11-12 00:17:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-12 00:17:54,720 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:17:54,720 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:17:54,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:17:54,721 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:17:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:17:54,721 INFO L82 PathProgramCache]: Analyzing trace with hash 682285896, now seen corresponding path program 1 times [2020-11-12 00:17:54,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:17:54,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124854045] [2020-11-12 00:17:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:17:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:17:54,760 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 00:17:54,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124854045] [2020-11-12 00:17:54,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:17:54,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:17:54,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626215819] [2020-11-12 00:17:54,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:17:54,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:17:54,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:17:54,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:17:54,763 INFO L87 Difference]: Start difference. First operand 346 states and 1004 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 00:17:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:17:54,776 INFO L93 Difference]: Finished difference Result 334 states and 960 transitions. [2020-11-12 00:17:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:17:54,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2020-11-12 00:17:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:17:54,779 INFO L225 Difference]: With dead ends: 334 [2020-11-12 00:17:54,779 INFO L226 Difference]: Without dead ends: 334 [2020-11-12 00:17:54,780 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:17:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-11-12 00:17:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2020-11-12 00:17:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.8828828828828827) internal successors, (960), 333 states have internal predecessors, (960), 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 00:17:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 960 transitions. [2020-11-12 00:17:54,792 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 960 transitions. Word has length 15 [2020-11-12 00:17:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:17:54,793 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 960 transitions. [2020-11-12 00:17:54,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 00:17:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 960 transitions. [2020-11-12 00:17:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 00:17:54,794 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:17:54,794 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:17:54,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:17:54,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:17:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:17:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash 936842724, now seen corresponding path program 1 times [2020-11-12 00:17:54,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:17:54,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065856280] [2020-11-12 00:17:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:17:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:17:54,854 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 00:17:54,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065856280] [2020-11-12 00:17:54,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:17:54,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:17:54,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034167047] [2020-11-12 00:17:54,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:17:54,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:17:54,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:17:54,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:17:54,858 INFO L87 Difference]: Start difference. First operand 334 states and 960 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 00:17:54,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:17:54,883 INFO L93 Difference]: Finished difference Result 370 states and 1044 transitions. [2020-11-12 00:17:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:17:54,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2020-11-12 00:17:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:17:54,886 INFO L225 Difference]: With dead ends: 370 [2020-11-12 00:17:54,886 INFO L226 Difference]: Without dead ends: 148 [2020-11-12 00:17:54,887 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:17:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-12 00:17:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-11-12 00:17:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.557823129251701) internal successors, (376), 147 states have internal predecessors, (376), 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 00:17:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 376 transitions. [2020-11-12 00:17:54,895 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 376 transitions. Word has length 16 [2020-11-12 00:17:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:17:54,896 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 376 transitions. [2020-11-12 00:17:54,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 00:17:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 376 transitions. [2020-11-12 00:17:54,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-12 00:17:54,897 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:17:54,897 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:17:54,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:17:54,898 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:17:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:17:54,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1453323616, now seen corresponding path program 1 times [2020-11-12 00:17:54,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:17:54,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633175442] [2020-11-12 00:17:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:17:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:17:54,973 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 00:17:54,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633175442] [2020-11-12 00:17:54,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:17:54,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:17:54,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663854298] [2020-11-12 00:17:54,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:17:54,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:17:54,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:17:54,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:17:54,976 INFO L87 Difference]: Start difference. First operand 148 states and 376 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 00:17:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:17:54,991 INFO L93 Difference]: Finished difference Result 124 states and 300 transitions. [2020-11-12 00:17:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:17:54,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2020-11-12 00:17:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:17:54,992 INFO L225 Difference]: With dead ends: 124 [2020-11-12 00:17:54,992 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:17:54,993 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:17:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:17:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:17:54,993 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 00:17:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:17:54,994 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-12 00:17:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:17:54,994 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:17:54,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 00:17:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:17:54,994 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:17:54,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:17:54,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:17:54 BasicIcfg [2020-11-12 00:17:54,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:17:55,000 INFO L168 Benchmark]: Toolchain (without parser) took 8858.66 ms. Allocated memory was 302.0 MB in the beginning and 459.3 MB in the end (delta: 157.3 MB). Free memory was 276.4 MB in the beginning and 312.6 MB in the end (delta: -36.2 MB). Peak memory consumption was 123.0 MB. Max. memory is 16.0 GB. [2020-11-12 00:17:55,001 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:17:55,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.08 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 273.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:17:55,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.94 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 271.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:17:55,004 INFO L168 Benchmark]: Boogie Preprocessor took 33.70 ms. Allocated memory is still 302.0 MB. Free memory was 271.5 MB in the beginning and 270.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:17:55,004 INFO L168 Benchmark]: RCFGBuilder took 558.54 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 245.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2020-11-12 00:17:55,005 INFO L168 Benchmark]: TraceAbstraction took 7488.78 ms. Allocated memory was 302.0 MB in the beginning and 459.3 MB in the end (delta: 157.3 MB). Free memory was 245.1 MB in the beginning and 312.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.0 GB. [2020-11-12 00:17:55,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 687.08 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 273.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 76.94 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 271.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.70 ms. Allocated memory is still 302.0 MB. Free memory was 271.5 MB in the beginning and 270.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 558.54 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 245.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7488.78 ms. Allocated memory was 302.0 MB in the beginning and 459.3 MB in the end (delta: 157.3 MB). Free memory was 245.1 MB in the beginning and 312.6 MB in the end (delta: -67.5 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1681 VarBasedMoverChecksPositive, 71 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 59 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 146 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.7s, 105 PlacesBefore, 40 PlacesAfterwards, 95 TransitionsBefore, 27 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 86 TotalNumberOfCompositions, 5480 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 149 SDtfs, 144 SDslu, 110 SDs, 0 SdLazy, 25 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1194occurred 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: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 3513 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...