/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:45:06,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:45:06,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:45:06,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:45:06,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:45:06,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:45:06,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:45:06,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:45:06,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:45:06,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:45:06,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:45:06,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:45:06,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:45:06,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:45:06,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:45:06,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:45:06,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:45:06,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:45:06,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:45:06,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:45:06,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:45:06,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:45:06,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:45:06,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:45:06,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:45:06,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:45:06,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:45:06,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:45:06,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:45:06,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:45:06,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:45:06,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:45:06,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:45:06,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:45:06,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:45:06,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:45:06,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:45:06,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:45:06,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:45:06,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:45:06,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:45:06,999 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:45:06,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:45:06,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:45:07,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:45:07,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:45:07,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:45:07,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:45:07,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:45:07,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:45:07,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:45:07,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:45:07,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:45:07,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:45:07,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:45:07,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:45:07,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:45:07,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:45:07,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:45:07,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:45:07,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:45:07,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:45:07,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:45:07,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:45:07,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:45:07,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:45:07,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:45:07,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:45:07,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:45:07,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:45:07,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:45:07,459 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:45:07,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-09 12:45:07,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5321c6f1/2aa84fdc5c184b07acea749d4c950bbd/FLAG8b5ee9988 [2020-11-09 12:45:08,302 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:45:08,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-11-09 12:45:08,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5321c6f1/2aa84fdc5c184b07acea749d4c950bbd/FLAG8b5ee9988 [2020-11-09 12:45:08,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5321c6f1/2aa84fdc5c184b07acea749d4c950bbd [2020-11-09 12:45:08,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:45:08,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:45:08,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:45:08,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:45:08,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:45:08,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:45:08" (1/1) ... [2020-11-09 12:45:08,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ba3e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:08, skipping insertion in model container [2020-11-09 12:45:08,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:45:08" (1/1) ... [2020-11-09 12:45:08,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:45:08,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:45:09,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:45:09,168 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:45:09,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:45:09,382 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:45:09,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09 WrapperNode [2020-11-09 12:45:09,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:45:09,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:45:09,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:45:09,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:45:09,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:45:09,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:45:09,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:45:09,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:45:09,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (1/1) ... [2020-11-09 12:45:09,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:45:09,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:45:09,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:45:09,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:45:09,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (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 [2020-11-09 12:45:09,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:45:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:45:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:45:09,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:45:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:45:09,592 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:45:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:45:09,594 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:45:09,594 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:45:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:45:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:45:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:45:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:45:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:45:09,597 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:45:10,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:45:10,272 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:45:10,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:45:10 BoogieIcfgContainer [2020-11-09 12:45:10,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:45:10,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:45:10,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:45:10,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:45:10,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:45:08" (1/3) ... [2020-11-09 12:45:10,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7af0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:45:10, skipping insertion in model container [2020-11-09 12:45:10,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:09" (2/3) ... [2020-11-09 12:45:10,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7af0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:45:10, skipping insertion in model container [2020-11-09 12:45:10,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:45:10" (3/3) ... [2020-11-09 12:45:10,283 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-11-09 12:45:10,299 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:45:10,299 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:45:10,304 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:45:10,305 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:45:10,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,362 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,376 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,382 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:10,386 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:45:10,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:45:10,422 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:45:10,422 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:45:10,423 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:45:10,423 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:45:10,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:45:10,423 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:45:10,423 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:45:10,423 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:45:10,436 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:45:10,439 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:45:10,443 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:45:10,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 12:45:10,491 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 12:45:10,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:45:10,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:45:10,500 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:45:14,213 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 12:45:14,777 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 12:45:15,098 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 12:45:15,395 INFO L131 LiptonReduction]: Checked pairs total: 3321 [2020-11-09 12:45:15,395 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-09 12:45:15,403 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:45:15,430 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:45:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:45:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:45:15,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:15,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:15,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:15,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1248499387, now seen corresponding path program 1 times [2020-11-09 12:45:15,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:15,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143399298] [2020-11-09 12:45:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:15,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143399298] [2020-11-09 12:45:15,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:15,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:45:15,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984752430] [2020-11-09 12:45:15,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:45:15,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:15,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:45:15,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:15,792 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:45:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:15,852 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-09 12:45:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:45:15,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:45:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:15,888 INFO L225 Difference]: With dead ends: 290 [2020-11-09 12:45:15,888 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 12:45:15,893 INFO L677 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 [2020-11-09 12:45:15,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 12:45:15,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 12:45:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 12:45:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-09 12:45:15,986 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-09 12:45:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:15,987 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-09 12:45:15,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:45:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-09 12:45:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:45:15,989 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:15,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:15,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:45:15,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash 30655995, now seen corresponding path program 1 times [2020-11-09 12:45:15,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:15,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127134533] [2020-11-09 12:45:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127134533] [2020-11-09 12:45:16,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:45:16,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195416731] [2020-11-09 12:45:16,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:45:16,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:45:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:16,096 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-11-09 12:45:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,107 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-11-09 12:45:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:45:16,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 12:45:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,113 INFO L225 Difference]: With dead ends: 220 [2020-11-09 12:45:16,113 INFO L226 Difference]: Without dead ends: 220 [2020-11-09 12:45:16,114 INFO L677 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 [2020-11-09 12:45:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-09 12:45:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-11-09 12:45:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-11-09 12:45:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-11-09 12:45:16,136 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-11-09 12:45:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,136 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-11-09 12:45:16,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:45:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-11-09 12:45:16,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:45:16,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:16,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:16,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:45:16,139 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:16,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1213087086, now seen corresponding path program 1 times [2020-11-09 12:45:16,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:16,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214848] [2020-11-09 12:45:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214848] [2020-11-09 12:45:16,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:45:16,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904746038] [2020-11-09 12:45:16,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:45:16,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:45:16,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:16,193 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 3 states. [2020-11-09 12:45:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,227 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-11-09 12:45:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:45:16,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 12:45:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,232 INFO L225 Difference]: With dead ends: 296 [2020-11-09 12:45:16,232 INFO L226 Difference]: Without dead ends: 236 [2020-11-09 12:45:16,233 INFO L677 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 [2020-11-09 12:45:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-09 12:45:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-11-09 12:45:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-09 12:45:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-11-09 12:45:16,251 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-11-09 12:45:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,251 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-11-09 12:45:16,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:45:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-11-09 12:45:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:45:16,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:16,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:16,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:45:16,254 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1780128980, now seen corresponding path program 1 times [2020-11-09 12:45:16,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:16,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186507112] [2020-11-09 12:45:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186507112] [2020-11-09 12:45:16,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:45:16,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977802410] [2020-11-09 12:45:16,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:45:16,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:45:16,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:16,297 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand 3 states. [2020-11-09 12:45:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,306 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-11-09 12:45:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:45:16,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 12:45:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,309 INFO L225 Difference]: With dead ends: 203 [2020-11-09 12:45:16,309 INFO L226 Difference]: Without dead ends: 203 [2020-11-09 12:45:16,309 INFO L677 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 [2020-11-09 12:45:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-09 12:45:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-11-09 12:45:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-11-09 12:45:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-11-09 12:45:16,324 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-11-09 12:45:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,324 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-11-09 12:45:16,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:45:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-11-09 12:45:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:45:16,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:16,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:16,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:45:16,327 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash -650577484, now seen corresponding path program 1 times [2020-11-09 12:45:16,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:16,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589236296] [2020-11-09 12:45:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589236296] [2020-11-09 12:45:16,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:45:16,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403223785] [2020-11-09 12:45:16,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:45:16,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:45:16,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:45:16,378 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand 4 states. [2020-11-09 12:45:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,399 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-11-09 12:45:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:45:16,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 12:45:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,401 INFO L225 Difference]: With dead ends: 240 [2020-11-09 12:45:16,401 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 12:45:16,402 INFO L677 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 [2020-11-09 12:45:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 12:45:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 12:45:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 12:45:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-11-09 12:45:16,409 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-11-09 12:45:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,410 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-11-09 12:45:16,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:45:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-11-09 12:45:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:45:16,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:16,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:16,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:45:16,412 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:16,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1306895020, now seen corresponding path program 1 times [2020-11-09 12:45:16,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:16,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584390008] [2020-11-09 12:45:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584390008] [2020-11-09 12:45:16,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:45:16,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418315231] [2020-11-09 12:45:16,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:45:16,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:45:16,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:45:16,515 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand 4 states. [2020-11-09 12:45:16,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,567 INFO L93 Difference]: Finished difference Result 164 states and 345 transitions. [2020-11-09 12:45:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:45:16,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:45:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,569 INFO L225 Difference]: With dead ends: 164 [2020-11-09 12:45:16,569 INFO L226 Difference]: Without dead ends: 124 [2020-11-09 12:45:16,572 INFO L677 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 [2020-11-09 12:45:16,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-09 12:45:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-11-09 12:45:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-09 12:45:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-11-09 12:45:16,577 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 12 [2020-11-09 12:45:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,577 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-11-09 12:45:16,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:45:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-11-09 12:45:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:45:16,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:16,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:16,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:45:16,583 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:16,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:16,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1812224197, now seen corresponding path program 1 times [2020-11-09 12:45:16,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:16,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748091337] [2020-11-09 12:45:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748091337] [2020-11-09 12:45:16,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:45:16,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348853125] [2020-11-09 12:45:16,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:45:16,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:45:16,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:45:16,697 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-11-09 12:45:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,758 INFO L93 Difference]: Finished difference Result 122 states and 237 transitions. [2020-11-09 12:45:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:45:16,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:45:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,760 INFO L225 Difference]: With dead ends: 122 [2020-11-09 12:45:16,761 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 12:45:16,761 INFO L677 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 [2020-11-09 12:45:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 12:45:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 12:45:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 12:45:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-11-09 12:45:16,766 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 13 [2020-11-09 12:45:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,766 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-11-09 12:45:16,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:45:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-11-09 12:45:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:45:16,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:16,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:16,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:45:16,770 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:16,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:16,772 INFO L82 PathProgramCache]: Analyzing trace with hash 111718158, now seen corresponding path program 1 times [2020-11-09 12:45:16,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:16,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336757095] [2020-11-09 12:45:16,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336757095] [2020-11-09 12:45:16,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:45:16,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446293644] [2020-11-09 12:45:16,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:45:16,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:45:16,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:45:16,826 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 3 states. [2020-11-09 12:45:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,839 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-11-09 12:45:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:45:16,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-09 12:45:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,842 INFO L225 Difference]: With dead ends: 101 [2020-11-09 12:45:16,842 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 12:45:16,843 INFO L677 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 [2020-11-09 12:45:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 12:45:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-11-09 12:45:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-09 12:45:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-11-09 12:45:16,851 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-11-09 12:45:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,851 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-11-09 12:45:16,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:45:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-11-09 12:45:16,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:45:16,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:45:16,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:45:16,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:45:16,853 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:45:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:45:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash 567564355, now seen corresponding path program 1 times [2020-11-09 12:45:16,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:45:16,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187172940] [2020-11-09 12:45:16,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:45:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:45:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:45:16,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187172940] [2020-11-09 12:45:16,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:45:16,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:45:16,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639575771] [2020-11-09 12:45:16,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:45:16,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:45:16,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:45:16,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:45:16,952 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 6 states. [2020-11-09 12:45:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:45:16,984 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-11-09 12:45:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:45:16,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:45:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:45:16,985 INFO L225 Difference]: With dead ends: 67 [2020-11-09 12:45:16,985 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:45:16,986 INFO L677 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 [2020-11-09 12:45:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:45:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:45:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:45:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:45:16,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-09 12:45:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:45:16,987 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:45:16,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:45:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:45:16,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:45:16,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:45:16,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:45:16 BasicIcfg [2020-11-09 12:45:16,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:45:16,993 INFO L168 Benchmark]: Toolchain (without parser) took 8405.00 ms. Allocated memory was 156.2 MB in the beginning and 227.5 MB in the end (delta: 71.3 MB). Free memory was 129.9 MB in the beginning and 109.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 93.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:16,993 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:45:16,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.77 ms. Allocated memory is still 156.2 MB. Free memory was 129.3 MB in the beginning and 134.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:16,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 156.2 MB. Free memory was 134.9 MB in the beginning and 132.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:16,996 INFO L168 Benchmark]: Boogie Preprocessor took 62.14 ms. Allocated memory is still 156.2 MB. Free memory was 132.8 MB in the beginning and 131.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:16,996 INFO L168 Benchmark]: RCFGBuilder took 777.11 ms. Allocated memory is still 156.2 MB. Free memory was 131.7 MB in the beginning and 109.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:16,997 INFO L168 Benchmark]: TraceAbstraction took 6715.29 ms. Allocated memory was 156.2 MB in the beginning and 227.5 MB in the end (delta: 71.3 MB). Free memory was 109.2 MB in the beginning and 109.7 MB in the end (delta: -521.8 kB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:45:17,001 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 156.2 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 789.77 ms. Allocated memory is still 156.2 MB. Free memory was 129.3 MB in the beginning and 134.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 156.2 MB. Free memory was 134.9 MB in the beginning and 132.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.14 ms. Allocated memory is still 156.2 MB. Free memory was 132.8 MB in the beginning and 131.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 777.11 ms. Allocated memory is still 156.2 MB. Free memory was 131.7 MB in the beginning and 109.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6715.29 ms. Allocated memory was 156.2 MB in the beginning and 227.5 MB in the end (delta: 71.3 MB). Free memory was 109.2 MB in the beginning and 109.7 MB in the end (delta: -521.8 kB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 988 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3321 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 167 SDtfs, 119 SDslu, 171 SDs, 0 SdLazy, 83 SolverSat, 17 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=298occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 2945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...