/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/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:06:28,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:06:28,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:06:28,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:06:28,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:06:28,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:06:28,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:06:28,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:06:28,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:06:28,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:06:28,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:06:28,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:06:28,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:06:28,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:06:28,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:06:28,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:06:28,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:06:28,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:06:28,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:06:28,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:06:28,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:06:28,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:06:28,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:06:28,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:06:28,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:06:28,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:06:28,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:06:28,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:06:28,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:06:28,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:06:28,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:06:28,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:06:28,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:06:28,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:06:28,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:06:28,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:06:28,676 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 00:06:28,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:06:28,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:06:28,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:06:28,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:06:28,729 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:06:28,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:06:28,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:06:28,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:06:28,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:06:28,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:06:28,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:06:28,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:06:28,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:06:28,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:06:28,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:06:28,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:06:28,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:06:28,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:06:28,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:06:28,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:06:28,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:06:28,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:06:28,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:06:28,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:06:28,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:06:28,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:06:28,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:06:28,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:06:28,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:06:29,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:06:29,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:06:29,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:06:29,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:06:29,223 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:06:29,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-11-12 00:06:29,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d116bbb1/882c462b830d4e67a7b315387cfd5edd/FLAG93dce3c25 [2020-11-12 00:06:29,977 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:06:29,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-11-12 00:06:29,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d116bbb1/882c462b830d4e67a7b315387cfd5edd/FLAG93dce3c25 [2020-11-12 00:06:30,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d116bbb1/882c462b830d4e67a7b315387cfd5edd [2020-11-12 00:06:30,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:06:30,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:06:30,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:06:30,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:06:30,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:06:30,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:30,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9a4662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30, skipping insertion in model container [2020-11-12 00:06:30,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:30,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:06:30,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:06:30,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:06:30,725 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:06:30,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:06:30,954 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:06:30,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30 WrapperNode [2020-11-12 00:06:30,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:06:30,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:06:30,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:06:30,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:06:30,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:30,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:06:31,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:06:31,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:06:31,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:06:31,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (1/1) ... [2020-11-12 00:06:31,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:06:31,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:06:31,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:06:31,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:06:31,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (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 00:06:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:06:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:06:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:06:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:06:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:06:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:06:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:06:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:06:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:06:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:06:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:06:31,130 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 00:06:31,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:06:31,536 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:06:31,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:06:31 BoogieIcfgContainer [2020-11-12 00:06:31,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:06:31,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:06:31,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:06:31,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:06:31,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:06:30" (1/3) ... [2020-11-12 00:06:31,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175de6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:06:31, skipping insertion in model container [2020-11-12 00:06:31,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:30" (2/3) ... [2020-11-12 00:06:31,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175de6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:06:31, skipping insertion in model container [2020-11-12 00:06:31,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:06:31" (3/3) ... [2020-11-12 00:06:31,549 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-11-12 00:06:31,566 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:06:31,566 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:06:31,570 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:06:31,571 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:06:31,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,604 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,604 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,605 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,605 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,605 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,605 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,606 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,606 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,606 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,607 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,608 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,608 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,608 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,609 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,609 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,609 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,609 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,610 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,611 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,612 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,612 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,612 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,612 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,614 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,617 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,617 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,617 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,618 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,626 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,627 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,627 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:31,640 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:06:31,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 00:06:31,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:06:31,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:06:31,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:06:31,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:06:31,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:06:31,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:06:31,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:06:31,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:06:31,691 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:06:31,693 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-12 00:06:31,697 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-12 00:06:31,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-12 00:06:31,745 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-12 00:06:31,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:06:31,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-12 00:06:31,754 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-12 00:06:35,514 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-12 00:06:35,793 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-12 00:06:35,978 INFO L131 LiptonReduction]: Checked pairs total: 2591 [2020-11-12 00:06:35,978 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-12 00:06:35,985 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-11-12 00:06:36,010 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 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 00:06:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 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 00:06:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 00:06:36,021 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:36,021 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:36,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:36,027 INFO L82 PathProgramCache]: Analyzing trace with hash 87451369, now seen corresponding path program 1 times [2020-11-12 00:06:36,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:36,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381682406] [2020-11-12 00:06:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:36,253 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 00:06:36,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381682406] [2020-11-12 00:06:36,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:36,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:06:36,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108809439] [2020-11-12 00:06:36,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:06:36,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:36,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:06:36,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:06:36,280 INFO L87 Difference]: Start difference. First operand has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 00:06:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:36,325 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-11-12 00:06:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:06:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2020-11-12 00:06:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:36,342 INFO L225 Difference]: With dead ends: 214 [2020-11-12 00:06:36,342 INFO L226 Difference]: Without dead ends: 166 [2020-11-12 00:06:36,343 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 00:06:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-12 00:06:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-11-12 00:06:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.672727272727273) internal successors, (441), 165 states have internal predecessors, (441), 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 00:06:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-11-12 00:06:36,402 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-11-12 00:06:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:36,403 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-11-12 00:06:36,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 00:06:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-11-12 00:06:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-12 00:06:36,404 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:36,405 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:36,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:06:36,405 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1583999068, now seen corresponding path program 1 times [2020-11-12 00:06:36,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:36,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215230402] [2020-11-12 00:06:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:36,495 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 00:06:36,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215230402] [2020-11-12 00:06:36,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:36,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:06:36,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931048121] [2020-11-12 00:06:36,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:06:36,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:36,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:06:36,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:06:36,499 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 00:06:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:36,528 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-11-12 00:06:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:06:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2020-11-12 00:06:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:36,531 INFO L225 Difference]: With dead ends: 220 [2020-11-12 00:06:36,531 INFO L226 Difference]: Without dead ends: 148 [2020-11-12 00:06:36,532 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 00:06:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-12 00:06:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-11-12 00:06:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.564625850340136) internal successors, (377), 147 states have internal predecessors, (377), 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 00:06:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-11-12 00:06:36,548 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 9 [2020-11-12 00:06:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:36,548 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-11-12 00:06:36,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 00:06:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-11-12 00:06:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-12 00:06:36,550 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:36,550 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:36,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:06:36,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:36,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1907596549, now seen corresponding path program 1 times [2020-11-12 00:06:36,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:36,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001071198] [2020-11-12 00:06:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:36,635 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 00:06:36,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001071198] [2020-11-12 00:06:36,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:36,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:06:36,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857760585] [2020-11-12 00:06:36,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:06:36,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:36,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:06:36,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:06:36,639 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 00:06:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:36,714 INFO L93 Difference]: Finished difference Result 168 states and 391 transitions. [2020-11-12 00:06:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:06:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 00:06:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:36,719 INFO L225 Difference]: With dead ends: 168 [2020-11-12 00:06:36,720 INFO L226 Difference]: Without dead ends: 126 [2020-11-12 00:06:36,720 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 00:06:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-12 00:06:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-11-12 00:06:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.328) internal successors, (291), 125 states have internal predecessors, (291), 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 00:06:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 291 transitions. [2020-11-12 00:06:36,733 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 291 transitions. Word has length 10 [2020-11-12 00:06:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:36,733 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 291 transitions. [2020-11-12 00:06:36,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 00:06:36,733 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 291 transitions. [2020-11-12 00:06:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:06:36,735 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:36,735 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:36,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:06:36,735 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:36,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1178539208, now seen corresponding path program 1 times [2020-11-12 00:06:36,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:36,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684555542] [2020-11-12 00:06:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:36,840 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 00:06:36,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684555542] [2020-11-12 00:06:36,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:36,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:06:36,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49894634] [2020-11-12 00:06:36,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:06:36,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:36,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:06:36,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:06:36,844 INFO L87 Difference]: Start difference. First operand 126 states and 291 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 00:06:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:36,908 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-11-12 00:06:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:06:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 00:06:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:36,910 INFO L225 Difference]: With dead ends: 121 [2020-11-12 00:06:36,910 INFO L226 Difference]: Without dead ends: 93 [2020-11-12 00:06:36,910 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:06:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-12 00:06:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-12 00:06:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.0869565217391304) internal successors, (192), 92 states have internal predecessors, (192), 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 00:06:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-11-12 00:06:36,930 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-11-12 00:06:36,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:36,930 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-11-12 00:06:36,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 00:06:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-11-12 00:06:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:06:36,934 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:36,934 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:36,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:06:36,934 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:36,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:36,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1293473607, now seen corresponding path program 1 times [2020-11-12 00:06:36,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:36,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410313761] [2020-11-12 00:06:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:37,048 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 00:06:37,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410313761] [2020-11-12 00:06:37,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:37,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:06:37,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091516893] [2020-11-12 00:06:37,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:06:37,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:37,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:06:37,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:06:37,051 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:06:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:37,118 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-11-12 00:06:37,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:06:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:06:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:37,120 INFO L225 Difference]: With dead ends: 87 [2020-11-12 00:06:37,120 INFO L226 Difference]: Without dead ends: 78 [2020-11-12 00:06:37,121 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:06:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-12 00:06:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-12 00:06:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.103896103896104) internal successors, (162), 77 states have internal predecessors, (162), 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 00:06:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-11-12 00:06:37,126 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-11-12 00:06:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:37,127 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-11-12 00:06:37,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 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 00:06:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-11-12 00:06:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 00:06:37,129 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:37,129 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:37,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:06:37,129 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1659884209, now seen corresponding path program 1 times [2020-11-12 00:06:37,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:37,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307042137] [2020-11-12 00:06:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:37,210 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 00:06:37,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307042137] [2020-11-12 00:06:37,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:37,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:06:37,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427459402] [2020-11-12 00:06:37,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:06:37,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:37,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:06:37,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:06:37,213 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 00:06:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:37,229 INFO L93 Difference]: Finished difference Result 91 states and 183 transitions. [2020-11-12 00:06:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:06:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 00:06:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:37,230 INFO L225 Difference]: With dead ends: 91 [2020-11-12 00:06:37,230 INFO L226 Difference]: Without dead ends: 33 [2020-11-12 00:06:37,231 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 00:06:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-12 00:06:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-12 00:06:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 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 00:06:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-12 00:06:37,233 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-11-12 00:06:37,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:37,234 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-12 00:06:37,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 00:06:37,234 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-12 00:06:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 00:06:37,235 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:37,235 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:37,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:06:37,236 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:37,236 INFO L82 PathProgramCache]: Analyzing trace with hash -609824271, now seen corresponding path program 2 times [2020-11-12 00:06:37,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:37,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083576087] [2020-11-12 00:06:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:37,268 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 00:06:37,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083576087] [2020-11-12 00:06:37,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:37,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:06:37,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100379000] [2020-11-12 00:06:37,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:06:37,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:37,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:06:37,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:06:37,271 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 3 states, 2 states have (on average 8.0) 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 00:06:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:37,278 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-12 00:06:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:06:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) 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 00:06:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:37,279 INFO L225 Difference]: With dead ends: 32 [2020-11-12 00:06:37,279 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:06:37,280 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:06:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:06:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:06:37,280 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 00:06:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:06:37,281 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-12 00:06:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:37,281 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:06:37,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.0) 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 00:06:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:06:37,282 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:06:37,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:06:37,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:06:37 BasicIcfg [2020-11-12 00:06:37,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:06:37,287 INFO L168 Benchmark]: Toolchain (without parser) took 7019.62 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 275.9 MB in the beginning and 393.7 MB in the end (delta: -117.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:37,288 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:06:37,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.56 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 273.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:37,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 302.0 MB. Free memory was 273.9 MB in the beginning and 271.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:37,290 INFO L168 Benchmark]: Boogie Preprocessor took 29.08 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 270.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:37,291 INFO L168 Benchmark]: RCFGBuilder took 504.53 ms. Allocated memory is still 302.0 MB. Free memory was 270.6 MB in the beginning and 248.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:37,292 INFO L168 Benchmark]: TraceAbstraction took 5744.68 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 247.5 MB in the beginning and 393.7 MB in the end (delta: -146.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:06:37,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 681.56 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 273.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 302.0 MB. Free memory was 273.9 MB in the beginning and 271.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.08 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 270.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 504.53 ms. Allocated memory is still 302.0 MB. Free memory was 270.6 MB in the beginning and 248.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5744.68 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 247.5 MB in the beginning and 393.7 MB in the end (delta: -146.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 961 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 62 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 2591 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 127 SDtfs, 123 SDslu, 172 SDs, 0 SdLazy, 98 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2338 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...