/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:09:48,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:09:48,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:09:48,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:09:48,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:09:48,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:09:48,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:09:48,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:09:48,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:09:48,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:09:48,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:09:48,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:09:48,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:09:48,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:09:49,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:09:49,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:09:49,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:09:49,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:09:49,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:09:49,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:09:49,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:09:49,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:09:49,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:09:49,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:09:49,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 18:09:49,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 18:09:49,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 18:09:49,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 18:09:49,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 18:09:49,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 18:09:49,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:09:49,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:09:49,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:09:49,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:09:49,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:09:49,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:09:49,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:09:49,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:09:49,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:09:49,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:09:49,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:09:49,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 18:09:49,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:09:49,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:09:49,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:09:49,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:09:49,130 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:09:49,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:09:49,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:09:49,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:09:49,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:09:49,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:09:49,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:09:49,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:09:49,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:09:49,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:09:49,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:09:49,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:09:49,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:09:49,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:09:49,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:09:49,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:09:49,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:09:49,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:09:49,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:09:49,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:09:49,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:09:49,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:09:49,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:09:49,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:09:49,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:09:49,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:09:49,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:09:49,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:09:49,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:09:49,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:09:49,596 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:09:49,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-11 18:09:49,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70907ce6/7ab2bca797c5413e9e09c10965e3033c/FLAG66bc5b37c [2020-11-11 18:09:50,548 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:09:50,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-11 18:09:50,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70907ce6/7ab2bca797c5413e9e09c10965e3033c/FLAG66bc5b37c [2020-11-11 18:09:50,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70907ce6/7ab2bca797c5413e9e09c10965e3033c [2020-11-11 18:09:50,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:09:50,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:09:50,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:09:50,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:09:50,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:09:50,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:09:50" (1/1) ... [2020-11-11 18:09:50,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4262d3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:50, skipping insertion in model container [2020-11-11 18:09:50,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:09:50" (1/1) ... [2020-11-11 18:09:50,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:09:50,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:09:51,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:09:51,341 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:09:51,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:09:51,558 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:09:51,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51 WrapperNode [2020-11-11 18:09:51,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:09:51,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:09:51,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:09:51,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:09:51,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:09:51,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:09:51,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:09:51,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:09:51,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (1/1) ... [2020-11-11 18:09:51,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:09:51,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:09:51,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:09:51,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:09:51,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (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 [2020-11-11 18:09:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:09:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:09:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:09:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:09:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:09:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:09:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:09:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:09:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:09:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:09:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:09:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:09:51,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:09:51,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:09:51,732 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:09:52,295 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:09:52,295 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:09:52,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:09:52 BoogieIcfgContainer [2020-11-11 18:09:52,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:09:52,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:09:52,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:09:52,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:09:52,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:09:50" (1/3) ... [2020-11-11 18:09:52,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3ddee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:09:52, skipping insertion in model container [2020-11-11 18:09:52,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:09:51" (2/3) ... [2020-11-11 18:09:52,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3ddee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:09:52, skipping insertion in model container [2020-11-11 18:09:52,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:09:52" (3/3) ... [2020-11-11 18:09:52,308 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-11-11 18:09:52,326 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:09:52,326 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:09:52,331 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:09:52,332 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:09:52,376 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,377 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,377 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,378 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,378 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,380 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,380 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,385 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,385 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,386 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,390 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,396 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,396 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:09:52,404 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:09:52,418 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:09:52,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:09:52,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:09:52,444 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:09:52,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:09:52,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:09:52,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:09:52,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:09:52,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:09:52,457 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 76 transitions, 167 flow [2020-11-11 18:09:53,317 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 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) [2020-11-11 18:09:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 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) [2020-11-11 18:09:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-11 18:09:53,402 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:53,404 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:53,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1568087296, now seen corresponding path program 1 times [2020-11-11 18:09:53,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:53,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199792091] [2020-11-11 18:09:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:53,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199792091] [2020-11-11 18:09:53,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:53,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:09:53,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078641262] [2020-11-11 18:09:53,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:09:53,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:54,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:09:54,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:09:54,044 INFO L87 Difference]: Start difference. First operand has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2020-11-11 18:09:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:54,591 INFO L93 Difference]: Finished difference Result 11326 states and 39206 transitions. [2020-11-11 18:09:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:09:54,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2020-11-11 18:09:54,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:54,661 INFO L225 Difference]: With dead ends: 11326 [2020-11-11 18:09:54,661 INFO L226 Difference]: Without dead ends: 4336 [2020-11-11 18:09:54,663 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:09:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2020-11-11 18:09:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4336. [2020-11-11 18:09:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4335 states have (on average 3.4069204152249135) internal successors, (14769), 4335 states have internal predecessors, (14769), 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) [2020-11-11 18:09:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 14769 transitions. [2020-11-11 18:09:55,063 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 14769 transitions. Word has length 40 [2020-11-11 18:09:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:55,065 INFO L481 AbstractCegarLoop]: Abstraction has 4336 states and 14769 transitions. [2020-11-11 18:09:55,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2020-11-11 18:09:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 14769 transitions. [2020-11-11 18:09:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:09:55,075 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:55,076 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:55,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:09:55,076 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash -291447777, now seen corresponding path program 1 times [2020-11-11 18:09:55,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:55,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811273096] [2020-11-11 18:09:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:55,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811273096] [2020-11-11 18:09:55,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:55,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:09:55,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269505730] [2020-11-11 18:09:55,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:09:55,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:55,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:09:55,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:09:55,401 INFO L87 Difference]: Start difference. First operand 4336 states and 14769 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-11 18:09:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:55,666 INFO L93 Difference]: Finished difference Result 4696 states and 15807 transitions. [2020-11-11 18:09:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:09:55,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2020-11-11 18:09:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:55,704 INFO L225 Difference]: With dead ends: 4696 [2020-11-11 18:09:55,704 INFO L226 Difference]: Without dead ends: 3856 [2020-11-11 18:09:55,705 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:09:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2020-11-11 18:09:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 3856. [2020-11-11 18:09:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3855 states have (on average 3.378728923476005) internal successors, (13025), 3855 states have internal predecessors, (13025), 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) [2020-11-11 18:09:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 13025 transitions. [2020-11-11 18:09:55,928 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 13025 transitions. Word has length 42 [2020-11-11 18:09:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:55,929 INFO L481 AbstractCegarLoop]: Abstraction has 3856 states and 13025 transitions. [2020-11-11 18:09:55,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-11 18:09:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 13025 transitions. [2020-11-11 18:09:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-11 18:09:55,943 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:55,943 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:55,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:09:55,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash 209891192, now seen corresponding path program 1 times [2020-11-11 18:09:55,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:55,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414740852] [2020-11-11 18:09:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:56,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414740852] [2020-11-11 18:09:56,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:56,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:09:56,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639455832] [2020-11-11 18:09:56,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:09:56,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:56,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:09:56,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:09:56,194 INFO L87 Difference]: Start difference. First operand 3856 states and 13025 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:56,598 INFO L93 Difference]: Finished difference Result 5700 states and 19142 transitions. [2020-11-11 18:09:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:09:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-11-11 18:09:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:56,632 INFO L225 Difference]: With dead ends: 5700 [2020-11-11 18:09:56,633 INFO L226 Difference]: Without dead ends: 3438 [2020-11-11 18:09:56,633 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:09:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2020-11-11 18:09:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 3438. [2020-11-11 18:09:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 3437 states have (on average 3.325865580448065) internal successors, (11431), 3437 states have internal predecessors, (11431), 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) [2020-11-11 18:09:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 11431 transitions. [2020-11-11 18:09:56,896 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 11431 transitions. Word has length 43 [2020-11-11 18:09:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:56,896 INFO L481 AbstractCegarLoop]: Abstraction has 3438 states and 11431 transitions. [2020-11-11 18:09:56,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 11431 transitions. [2020-11-11 18:09:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:09:56,906 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:56,906 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:56,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:09:56,907 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:56,908 INFO L82 PathProgramCache]: Analyzing trace with hash -654532284, now seen corresponding path program 1 times [2020-11-11 18:09:56,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:56,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141635705] [2020-11-11 18:09:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:57,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141635705] [2020-11-11 18:09:57,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:57,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:09:57,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285230020] [2020-11-11 18:09:57,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:09:57,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:57,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:09:57,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:09:57,030 INFO L87 Difference]: Start difference. First operand 3438 states and 11431 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:57,208 INFO L93 Difference]: Finished difference Result 5406 states and 17607 transitions. [2020-11-11 18:09:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:09:57,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-11 18:09:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:57,241 INFO L225 Difference]: With dead ends: 5406 [2020-11-11 18:09:57,241 INFO L226 Difference]: Without dead ends: 3758 [2020-11-11 18:09:57,242 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:09:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2020-11-11 18:09:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3118. [2020-11-11 18:09:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 3117 states have (on average 3.2348411934552455) internal successors, (10083), 3117 states have internal predecessors, (10083), 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) [2020-11-11 18:09:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 10083 transitions. [2020-11-11 18:09:57,408 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 10083 transitions. Word has length 45 [2020-11-11 18:09:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:57,409 INFO L481 AbstractCegarLoop]: Abstraction has 3118 states and 10083 transitions. [2020-11-11 18:09:57,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 10083 transitions. [2020-11-11 18:09:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:09:57,418 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:57,418 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:57,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:09:57,418 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:57,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:57,419 INFO L82 PathProgramCache]: Analyzing trace with hash 725194327, now seen corresponding path program 1 times [2020-11-11 18:09:57,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:57,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845807366] [2020-11-11 18:09:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:57,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845807366] [2020-11-11 18:09:57,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:57,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:09:57,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551471554] [2020-11-11 18:09:57,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:09:57,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:09:57,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:09:57,593 INFO L87 Difference]: Start difference. First operand 3118 states and 10083 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:57,818 INFO L93 Difference]: Finished difference Result 4382 states and 13899 transitions. [2020-11-11 18:09:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:09:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-11 18:09:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:57,831 INFO L225 Difference]: With dead ends: 4382 [2020-11-11 18:09:57,832 INFO L226 Difference]: Without dead ends: 2830 [2020-11-11 18:09:57,832 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:09:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-11-11 18:09:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2190. [2020-11-11 18:09:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2189 states have (on average 3.098675194152581) internal successors, (6783), 2189 states have internal predecessors, (6783), 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) [2020-11-11 18:09:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 6783 transitions. [2020-11-11 18:09:57,976 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 6783 transitions. Word has length 45 [2020-11-11 18:09:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:57,976 INFO L481 AbstractCegarLoop]: Abstraction has 2190 states and 6783 transitions. [2020-11-11 18:09:57,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 6783 transitions. [2020-11-11 18:09:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-11 18:09:57,984 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:57,984 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:57,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:09:57,984 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash -643023679, now seen corresponding path program 1 times [2020-11-11 18:09:57,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:57,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463094243] [2020-11-11 18:09:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:58,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463094243] [2020-11-11 18:09:58,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:58,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:09:58,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316108249] [2020-11-11 18:09:58,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:09:58,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:58,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:09:58,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:09:58,116 INFO L87 Difference]: Start difference. First operand 2190 states and 6783 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-11 18:09:58,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:58,292 INFO L93 Difference]: Finished difference Result 2665 states and 8119 transitions. [2020-11-11 18:09:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:09:58,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2020-11-11 18:09:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:58,301 INFO L225 Difference]: With dead ends: 2665 [2020-11-11 18:09:58,301 INFO L226 Difference]: Without dead ends: 1993 [2020-11-11 18:09:58,302 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:09:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-11-11 18:09:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1993. [2020-11-11 18:09:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1992 states have (on average 3.0451807228915664) internal successors, (6066), 1992 states have internal predecessors, (6066), 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) [2020-11-11 18:09:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 6066 transitions. [2020-11-11 18:09:58,376 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 6066 transitions. Word has length 46 [2020-11-11 18:09:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:58,376 INFO L481 AbstractCegarLoop]: Abstraction has 1993 states and 6066 transitions. [2020-11-11 18:09:58,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-11 18:09:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 6066 transitions. [2020-11-11 18:09:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:09:58,383 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:58,383 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:58,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:09:58,383 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:58,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2047216989, now seen corresponding path program 1 times [2020-11-11 18:09:58,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:58,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612623308] [2020-11-11 18:09:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:58,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612623308] [2020-11-11 18:09:58,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:58,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:09:58,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845385197] [2020-11-11 18:09:58,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:09:58,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:58,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:09:58,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:09:58,589 INFO L87 Difference]: Start difference. First operand 1993 states and 6066 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:58,941 INFO L93 Difference]: Finished difference Result 1864 states and 5467 transitions. [2020-11-11 18:09:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:09:58,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-11 18:09:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:58,947 INFO L225 Difference]: With dead ends: 1864 [2020-11-11 18:09:58,947 INFO L226 Difference]: Without dead ends: 1284 [2020-11-11 18:09:58,948 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:09:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-11-11 18:09:58,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2020-11-11 18:09:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.8706157443491818) internal successors, (3683), 1283 states have internal predecessors, (3683), 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) [2020-11-11 18:09:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3683 transitions. [2020-11-11 18:09:58,989 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3683 transitions. Word has length 47 [2020-11-11 18:09:58,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:58,989 INFO L481 AbstractCegarLoop]: Abstraction has 1284 states and 3683 transitions. [2020-11-11 18:09:58,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3683 transitions. [2020-11-11 18:09:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:09:58,993 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:09:58,994 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:09:58,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:09:58,995 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:09:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:09:58,996 INFO L82 PathProgramCache]: Analyzing trace with hash -306973980, now seen corresponding path program 1 times [2020-11-11 18:09:58,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:09:58,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769599944] [2020-11-11 18:09:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:09:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:09:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:09:59,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769599944] [2020-11-11 18:09:59,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:09:59,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:09:59,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548974807] [2020-11-11 18:09:59,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:09:59,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:09:59,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:09:59,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:09:59,219 INFO L87 Difference]: Start difference. First operand 1284 states and 3683 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:09:59,348 INFO L93 Difference]: Finished difference Result 726 states and 1958 transitions. [2020-11-11 18:09:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-11 18:09:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-11 18:09:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:09:59,348 INFO L225 Difference]: With dead ends: 726 [2020-11-11 18:09:59,349 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:09:59,349 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:09:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:09:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:09:59,350 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) [2020-11-11 18:09:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:09:59,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-11-11 18:09:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:09:59,350 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:09:59,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:09:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:09:59,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:09:59,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:09:59,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:09:59 BasicIcfg [2020-11-11 18:09:59,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:09:59,369 INFO L168 Benchmark]: Toolchain (without parser) took 8598.37 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 935.3 MB). Free memory was 275.4 MB in the beginning and 1.0 GB in the end (delta: -737.5 MB). Peak memory consumption was 199.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:09:59,371 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:09:59,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.85 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 272.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:09:59,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.50 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 270.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:09:59,375 INFO L168 Benchmark]: Boogie Preprocessor took 29.00 ms. Allocated memory is still 302.0 MB. Free memory was 270.2 MB in the beginning and 269.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:09:59,376 INFO L168 Benchmark]: RCFGBuilder took 650.72 ms. Allocated memory is still 302.0 MB. Free memory was 269.1 MB in the beginning and 246.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:09:59,379 INFO L168 Benchmark]: TraceAbstraction took 7062.82 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 935.3 MB). Free memory was 246.1 MB in the beginning and 1.0 GB in the end (delta: -766.9 MB). Peak memory consumption was 168.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:09:59,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 786.85 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 272.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.50 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 270.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.00 ms. Allocated memory is still 302.0 MB. Free memory was 270.2 MB in the beginning and 269.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 650.72 ms. Allocated memory is still 302.0 MB. Free memory was 269.1 MB in the beginning and 246.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7062.82 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 935.3 MB). Free memory was 246.1 MB in the beginning and 1.0 GB in the end (delta: -766.9 MB). Peak memory consumption was 168.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 768 SDtfs, 1044 SDslu, 2331 SDs, 0 SdLazy, 260 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8446occurred 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: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1280 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 349 ConstructedInterpolants, 0 QuantifiedInterpolants, 40707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...