/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:01:38,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:01:38,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:01:38,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:01:38,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:01:38,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:01:38,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:01:38,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:01:38,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:01:38,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:01:38,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:01:38,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:01:38,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:01:38,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:01:38,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:01:38,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:01:38,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:01:38,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:01:38,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:01:38,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:01:38,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:01:38,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:01:38,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:01:38,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:01:38,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 14:01:38,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:01:38,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:01:38,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:01:38,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:01:38,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:01:38,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:01:38,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:01:38,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:01:38,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:01:38,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:01:38,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:01:38,772 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 [2020-10-09 14:01:38,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:01:38,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:01:38,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:01:38,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:01:38,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:01:38,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:01:38,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:01:38,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:01:38,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:01:38,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:01:38,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:01:38,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:01:38,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:01:38,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:01:38,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:01:38,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:01:38,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:01:38,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:01:38,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:01:38,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:01:38,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:01:38,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:01:38,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:01:38,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:01:38,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:01:38,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 14:01:38,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:01:38,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 14:01:38,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 14:01:38,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:01:39,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:01:39,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:01:39,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:01:39,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:01:39,113 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:01:39,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-09 14:01:39,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f71b6ea2/9e3c7a76491c4e3bb0e493a57cefd7d6/FLAGc5666b95a [2020-10-09 14:01:39,590 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:01:39,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-09 14:01:39,591 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-09 14:01:39,591 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-09 14:01:39,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f71b6ea2/9e3c7a76491c4e3bb0e493a57cefd7d6/FLAGc5666b95a [2020-10-09 14:01:39,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f71b6ea2/9e3c7a76491c4e3bb0e493a57cefd7d6 [2020-10-09 14:01:39,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:01:39,982 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:01:39,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:01:39,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:01:39,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:01:39,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:01:39" (1/1) ... [2020-10-09 14:01:39,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6dc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:39, skipping insertion in model container [2020-10-09 14:01:39,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:01:39" (1/1) ... [2020-10-09 14:01:39,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:01:40,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:01:40,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:01:40,278 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:01:40,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:01:40,317 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:01:40,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40 WrapperNode [2020-10-09 14:01:40,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:01:40,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:01:40,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:01:40,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:01:40,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:01:40,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:01:40,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:01:40,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:01:40,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (1/1) ... [2020-10-09 14:01:40,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:01:40,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:01:40,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:01:40,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:01:40,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (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 [2020-10-09 14:01:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:01:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-09 14:01:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-09 14:01:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:01:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:01:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 14:01:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 14:01:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:01:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:01:40,446 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:01:40,834 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:01:40,834 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-09 14:01:40,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:01:40 BoogieIcfgContainer [2020-10-09 14:01:40,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:01:40,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:01:40,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:01:40,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:01:40,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:01:39" (1/3) ... [2020-10-09 14:01:40,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e43478e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:01:40, skipping insertion in model container [2020-10-09 14:01:40,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:01:40" (2/3) ... [2020-10-09 14:01:40,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e43478e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:01:40, skipping insertion in model container [2020-10-09 14:01:40,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:01:40" (3/3) ... [2020-10-09 14:01:40,845 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-09 14:01:40,856 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 14:01:40,857 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:01:40,864 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 14:01:40,865 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:01:40,924 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,924 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,925 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,925 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,925 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,925 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,926 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,926 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,929 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,929 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,930 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,930 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,930 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,930 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,931 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,931 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,931 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,931 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,931 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,932 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,932 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,932 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,936 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,937 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,937 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,937 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,937 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,938 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,938 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,940 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,940 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,941 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,941 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,941 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,941 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,942 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,942 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,942 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,942 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,942 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,943 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,945 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,945 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,945 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,946 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,946 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,946 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,946 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,946 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,946 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,947 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,947 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,947 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,947 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,947 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,947 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,947 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,948 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,951 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,951 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,952 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,952 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,952 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,952 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,952 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,953 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,953 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,953 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,953 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,954 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,954 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,955 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,955 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,956 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,956 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,956 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,956 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,957 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,957 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,957 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,961 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,961 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,961 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,962 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,962 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,962 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,962 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,962 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,963 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,963 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,963 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,963 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,964 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,969 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,969 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,970 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,970 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,970 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,970 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,970 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,971 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,971 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,971 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,971 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,972 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,972 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:01:40,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 14:01:41,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:01:41,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 14:01:41,014 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:01:41,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:01:41,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:01:41,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:01:41,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:01:41,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:01:41,032 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 14:01:41,035 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-09 14:01:41,037 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-09 14:01:41,039 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-09 14:01:41,142 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-09 14:01:41,143 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:01:41,149 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-10-09 14:01:41,153 INFO L117 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-09 14:01:43,314 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-09 14:01:43,444 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-09 14:01:44,228 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-09 14:01:44,237 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-09 14:01:44,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:01:44,763 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-09 14:01:44,933 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-09 14:01:45,152 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-09 14:01:45,360 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-09 14:01:45,368 INFO L132 LiptonReduction]: Checked pairs total: 4040 [2020-10-09 14:01:45,368 INFO L134 LiptonReduction]: Total number of compositions: 125 [2020-10-09 14:01:45,374 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-09 14:01:45,390 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-09 14:01:45,392 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-09 14:01:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 14:01:45,403 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:45,404 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:45,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:45,411 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-09 14:01:45,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:45,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58394403] [2020-10-09 14:01:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:45,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58394403] [2020-10-09 14:01:45,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:45,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 14:01:45,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071837972] [2020-10-09 14:01:45,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 14:01:45,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:45,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 14:01:45,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 14:01:45,670 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-09 14:01:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:45,841 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-09 14:01:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 14:01:45,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-09 14:01:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:45,861 INFO L225 Difference]: With dead ends: 126 [2020-10-09 14:01:45,861 INFO L226 Difference]: Without dead ends: 104 [2020-10-09 14:01:45,863 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-09 14:01:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-09 14:01:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-09 14:01:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-09 14:01:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-09 14:01:45,922 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-09 14:01:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:45,923 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-09 14:01:45,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 14:01:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-09 14:01:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 14:01:45,926 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:45,926 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:45,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 14:01:45,926 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:45,927 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-09 14:01:45,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:45,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653570801] [2020-10-09 14:01:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:46,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653570801] [2020-10-09 14:01:46,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:46,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-09 14:01:46,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381054963] [2020-10-09 14:01:46,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:01:46,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:46,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:01:46,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:01:46,081 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-09 14:01:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:46,134 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-09 14:01:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:01:46,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-09 14:01:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:46,137 INFO L225 Difference]: With dead ends: 170 [2020-10-09 14:01:46,137 INFO L226 Difference]: Without dead ends: 163 [2020-10-09 14:01:46,138 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:01:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-09 14:01:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-09 14:01:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 14:01:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-09 14:01:46,157 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-09 14:01:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:46,158 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-09 14:01:46,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:01:46,158 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-09 14:01:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 14:01:46,160 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:46,160 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:46,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 14:01:46,161 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-09 14:01:46,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:46,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413910197] [2020-10-09 14:01:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:46,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413910197] [2020-10-09 14:01:46,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883143945] [2020-10-09 14:01:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:01:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:46,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-09 14:01:46,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:01:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:46,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:01:46,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-09 14:01:46,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431747049] [2020-10-09 14:01:46,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 14:01:46,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:46,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 14:01:46,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-09 14:01:46,536 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 8 states. [2020-10-09 14:01:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:46,746 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-09 14:01:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 14:01:46,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-09 14:01:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:46,750 INFO L225 Difference]: With dead ends: 202 [2020-10-09 14:01:46,751 INFO L226 Difference]: Without dead ends: 158 [2020-10-09 14:01:46,751 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 14:01:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-09 14:01:46,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-09 14:01:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-09 14:01:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-09 14:01:46,763 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-09 14:01:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:46,764 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-09 14:01:46,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 14:01:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-09 14:01:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-09 14:01:46,765 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:46,766 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:46,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-09 14:01:46,981 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:46,982 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-09 14:01:46,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:46,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302193292] [2020-10-09 14:01:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:47,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302193292] [2020-10-09 14:01:47,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:47,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 14:01:47,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507188715] [2020-10-09 14:01:47,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 14:01:47,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:47,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 14:01:47,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-09 14:01:47,583 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-09 14:01:47,843 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-09 14:01:48,072 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-09 14:01:48,340 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-09 14:01:48,658 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-09 14:01:49,025 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-09 14:01:49,357 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-09 14:01:49,531 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-09 14:01:49,800 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-09 14:01:50,183 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-09 14:01:50,495 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-09 14:01:50,658 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-09 14:01:51,002 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-09 14:01:51,259 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-09 14:01:51,508 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-09 14:01:51,925 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-09 14:01:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:52,034 INFO L93 Difference]: Finished difference Result 305 states and 837 transitions. [2020-10-09 14:01:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 14:01:52,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-09 14:01:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:52,038 INFO L225 Difference]: With dead ends: 305 [2020-10-09 14:01:52,038 INFO L226 Difference]: Without dead ends: 245 [2020-10-09 14:01:52,039 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2020-10-09 14:01:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-09 14:01:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 110. [2020-10-09 14:01:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-09 14:01:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 288 transitions. [2020-10-09 14:01:52,051 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 288 transitions. Word has length 20 [2020-10-09 14:01:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:52,052 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 288 transitions. [2020-10-09 14:01:52,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 14:01:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 288 transitions. [2020-10-09 14:01:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-09 14:01:52,053 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:52,054 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:52,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 14:01:52,054 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:52,055 INFO L82 PathProgramCache]: Analyzing trace with hash -323380434, now seen corresponding path program 2 times [2020-10-09 14:01:52,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:52,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128080977] [2020-10-09 14:01:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:52,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128080977] [2020-10-09 14:01:52,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:52,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 14:01:52,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416773542] [2020-10-09 14:01:52,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 14:01:52,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:52,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 14:01:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-09 14:01:52,623 INFO L87 Difference]: Start difference. First operand 110 states and 288 transitions. Second operand 10 states. [2020-10-09 14:01:52,852 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-09 14:01:53,060 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-09 14:01:53,335 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-09 14:01:53,703 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-09 14:01:54,153 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-09 14:01:54,675 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2020-10-09 14:01:55,021 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-09 14:01:55,230 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-09 14:01:55,505 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-09 14:01:55,864 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-09 14:01:56,287 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-09 14:01:56,769 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-09 14:01:57,110 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-09 14:01:57,458 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-09 14:01:57,597 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-09 14:01:57,854 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-09 14:01:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:01:57,938 INFO L93 Difference]: Finished difference Result 414 states and 1136 transitions. [2020-10-09 14:01:57,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 14:01:57,938 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-09 14:01:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:01:57,942 INFO L225 Difference]: With dead ends: 414 [2020-10-09 14:01:57,942 INFO L226 Difference]: Without dead ends: 382 [2020-10-09 14:01:57,943 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-10-09 14:01:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-09 14:01:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 116. [2020-10-09 14:01:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-09 14:01:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 301 transitions. [2020-10-09 14:01:57,961 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 301 transitions. Word has length 20 [2020-10-09 14:01:57,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:01:57,961 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 301 transitions. [2020-10-09 14:01:57,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 14:01:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 301 transitions. [2020-10-09 14:01:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-09 14:01:57,963 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:01:57,963 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:01:57,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 14:01:57,964 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:01:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:01:57,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1380507504, now seen corresponding path program 3 times [2020-10-09 14:01:57,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:01:57,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327068340] [2020-10-09 14:01:57,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:01:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:01:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:01:58,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327068340] [2020-10-09 14:01:58,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:01:58,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 14:01:58,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528779222] [2020-10-09 14:01:58,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 14:01:58,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:01:58,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 14:01:58,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-09 14:01:58,554 INFO L87 Difference]: Start difference. First operand 116 states and 301 transitions. Second operand 10 states. [2020-10-09 14:01:58,789 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-09 14:01:58,999 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-09 14:01:59,273 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-09 14:01:59,669 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-09 14:02:00,148 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-09 14:02:00,752 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2020-10-09 14:02:01,063 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-09 14:02:01,294 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-09 14:02:01,558 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-09 14:02:01,978 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-09 14:02:02,464 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-09 14:02:02,884 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-09 14:02:03,194 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-09 14:02:03,347 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-09 14:02:03,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:03,412 INFO L93 Difference]: Finished difference Result 320 states and 886 transitions. [2020-10-09 14:02:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 14:02:03,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-09 14:02:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:03,416 INFO L225 Difference]: With dead ends: 320 [2020-10-09 14:02:03,416 INFO L226 Difference]: Without dead ends: 318 [2020-10-09 14:02:03,417 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-09 14:02:03,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-09 14:02:03,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 118. [2020-10-09 14:02:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 14:02:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 308 transitions. [2020-10-09 14:02:03,425 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 308 transitions. Word has length 20 [2020-10-09 14:02:03,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:03,425 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 308 transitions. [2020-10-09 14:02:03,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 14:02:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 308 transitions. [2020-10-09 14:02:03,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-09 14:02:03,427 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:03,427 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:03,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 14:02:03,427 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:03,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1947007856, now seen corresponding path program 4 times [2020-10-09 14:02:03,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:03,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218081299] [2020-10-09 14:02:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:04,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218081299] [2020-10-09 14:02:04,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:02:04,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-09 14:02:04,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298982137] [2020-10-09 14:02:04,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 14:02:04,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:04,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 14:02:04,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-09 14:02:04,049 INFO L87 Difference]: Start difference. First operand 118 states and 308 transitions. Second operand 10 states. [2020-10-09 14:02:04,308 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-09 14:02:04,543 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-09 14:02:04,829 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-09 14:02:05,136 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-09 14:02:05,505 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-09 14:02:05,805 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-09 14:02:06,179 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2020-10-09 14:02:06,632 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-09 14:02:07,040 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2020-10-09 14:02:07,557 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-09 14:02:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:07,679 INFO L93 Difference]: Finished difference Result 278 states and 749 transitions. [2020-10-09 14:02:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 14:02:07,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-09 14:02:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:07,683 INFO L225 Difference]: With dead ends: 278 [2020-10-09 14:02:07,683 INFO L226 Difference]: Without dead ends: 278 [2020-10-09 14:02:07,684 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-09 14:02:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-09 14:02:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 122. [2020-10-09 14:02:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-09 14:02:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 324 transitions. [2020-10-09 14:02:07,693 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 324 transitions. Word has length 20 [2020-10-09 14:02:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:07,693 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 324 transitions. [2020-10-09 14:02:07,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 14:02:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 324 transitions. [2020-10-09 14:02:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-09 14:02:07,702 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:07,702 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:07,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 14:02:07,703 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 5 times [2020-10-09 14:02:07,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:07,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381232178] [2020-10-09 14:02:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:08,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381232178] [2020-10-09 14:02:08,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453471054] [2020-10-09 14:02:08,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:02:08,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:02:08,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:02:08,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 67 conjunts are in the unsatisfiable core [2020-10-09 14:02:08,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:02:08,221 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:02:08,222 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 75 [2020-10-09 14:02:08,224 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-10-09 14:02:08,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:02:08,227 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:02:08,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:02:08,238 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-09 14:02:08,344 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-09 14:02:08,345 INFO L625 ElimStorePlain]: treesize reduction 97, result has 37.0 percent of original size [2020-10-09 14:02:08,356 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-09 14:02:08,357 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-09 14:02:08,395 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:02:08,395 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:02:08,396 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:53 [2020-10-09 14:02:08,523 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-09 14:02:08,525 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:02:08,555 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:02:08,561 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-09 14:02:08,563 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:60 [2020-10-09 14:02:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:09,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:02:09,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2020-10-09 14:02:09,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751855235] [2020-10-09 14:02:09,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 14:02:09,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:09,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 14:02:09,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-09 14:02:09,177 INFO L87 Difference]: Start difference. First operand 122 states and 324 transitions. Second operand 17 states. [2020-10-09 14:02:09,463 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-09 14:02:09,690 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-09 14:02:10,026 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-09 14:02:10,384 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-09 14:02:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:10,757 INFO L93 Difference]: Finished difference Result 243 states and 654 transitions. [2020-10-09 14:02:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 14:02:10,757 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-09 14:02:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:10,759 INFO L225 Difference]: With dead ends: 243 [2020-10-09 14:02:10,759 INFO L226 Difference]: Without dead ends: 224 [2020-10-09 14:02:10,759 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-09 14:02:10,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-09 14:02:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 176. [2020-10-09 14:02:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-09 14:02:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 481 transitions. [2020-10-09 14:02:10,767 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 481 transitions. Word has length 20 [2020-10-09 14:02:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:10,769 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 481 transitions. [2020-10-09 14:02:10,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 14:02:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 481 transitions. [2020-10-09 14:02:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-09 14:02:10,771 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:10,771 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:10,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:02:10,985 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-09 14:02:10,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:10,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921655398] [2020-10-09 14:02:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:11,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921655398] [2020-10-09 14:02:11,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813372139] [2020-10-09 14:02:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:02:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:11,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-09 14:02:11,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:02:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 14:02:11,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:02:11,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 11 [2020-10-09 14:02:11,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848117528] [2020-10-09 14:02:11,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:02:11,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:11,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:02:11,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-09 14:02:11,498 INFO L87 Difference]: Start difference. First operand 176 states and 481 transitions. Second operand 13 states. [2020-10-09 14:02:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:12,735 INFO L93 Difference]: Finished difference Result 491 states and 1335 transitions. [2020-10-09 14:02:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 14:02:12,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-09 14:02:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:12,736 INFO L225 Difference]: With dead ends: 491 [2020-10-09 14:02:12,737 INFO L226 Difference]: Without dead ends: 109 [2020-10-09 14:02:12,737 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-10-09 14:02:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-09 14:02:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-10-09 14:02:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-09 14:02:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 149 transitions. [2020-10-09 14:02:12,741 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 149 transitions. Word has length 22 [2020-10-09 14:02:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:12,741 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 149 transitions. [2020-10-09 14:02:12,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:02:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 149 transitions. [2020-10-09 14:02:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-09 14:02:12,742 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:12,742 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:12,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:02:12,943 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:12,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1587846356, now seen corresponding path program 2 times [2020-10-09 14:02:12,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:12,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438755999] [2020-10-09 14:02:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:13,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438755999] [2020-10-09 14:02:13,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972592977] [2020-10-09 14:02:13,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:02:13,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:02:13,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:02:13,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-09 14:02:13,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:02:13,340 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 43 [2020-10-09 14:02:13,342 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:02:13,388 INFO L625 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-10-09 14:02:13,389 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:02:13,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-09 14:02:13,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-10-09 14:02:13,469 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:02:13,477 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:02:13,479 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-09 14:02:13,479 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-09 14:02:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-09 14:02:13,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:02:13,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-10-09 14:02:13,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316664950] [2020-10-09 14:02:13,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-09 14:02:13,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:13,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-09 14:02:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-09 14:02:13,608 INFO L87 Difference]: Start difference. First operand 70 states and 149 transitions. Second operand 14 states. [2020-10-09 14:02:14,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:14,902 INFO L93 Difference]: Finished difference Result 187 states and 417 transitions. [2020-10-09 14:02:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 14:02:14,903 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-09 14:02:14,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:14,904 INFO L225 Difference]: With dead ends: 187 [2020-10-09 14:02:14,904 INFO L226 Difference]: Without dead ends: 56 [2020-10-09 14:02:14,905 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-09 14:02:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-09 14:02:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-09 14:02:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-09 14:02:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-09 14:02:14,907 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 22 [2020-10-09 14:02:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:14,908 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-09 14:02:14,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-09 14:02:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-09 14:02:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-09 14:02:14,908 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 14:02:14,909 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:02:15,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:02:15,112 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-09 14:02:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:02:15,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1188207356, now seen corresponding path program 3 times [2020-10-09 14:02:15,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 14:02:15,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398680662] [2020-10-09 14:02:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 14:02:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:02:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:02:15,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398680662] [2020-10-09 14:02:15,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513620588] [2020-10-09 14:02:15,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:02:15,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 14:02:15,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:02:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-09 14:02:15,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:02:15,594 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:02:15,594 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 72 [2020-10-09 14:02:15,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:02:15,598 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-09 14:02:15,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:02:15,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:02:15,609 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:02:15,671 INFO L625 ElimStorePlain]: treesize reduction 139, result has 13.7 percent of original size [2020-10-09 14:02:15,673 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:02:15,674 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:14 [2020-10-09 14:02:15,765 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-10-09 14:02:15,766 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:02:15,774 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:02:15,776 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-09 14:02:15,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-09 14:02:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-09 14:02:15,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 14:02:15,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 13 [2020-10-09 14:02:15,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767908892] [2020-10-09 14:02:15,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 14:02:15,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 14:02:15,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 14:02:15,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-09 14:02:15,837 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 15 states. [2020-10-09 14:02:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 14:02:17,564 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-10-09 14:02:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 14:02:17,565 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-10-09 14:02:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 14:02:17,566 INFO L225 Difference]: With dead ends: 104 [2020-10-09 14:02:17,566 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 14:02:17,567 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 14:02:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 14:02:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 14:02:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 14:02:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 14:02:17,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-09 14:02:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 14:02:17,568 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 14:02:17,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 14:02:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 14:02:17,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 14:02:17,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-09 14:02:17,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:02:17 BasicIcfg [2020-10-09 14:02:17,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:02:17,774 INFO L168 Benchmark]: Toolchain (without parser) took 37792.91 ms. Allocated memory was 253.8 MB in the beginning and 554.2 MB in the end (delta: 300.4 MB). Free memory was 210.2 MB in the beginning and 409.5 MB in the end (delta: -199.3 MB). Peak memory consumption was 101.1 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:17,775 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:02:17,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.26 ms. Allocated memory was 253.8 MB in the beginning and 322.4 MB in the end (delta: 68.7 MB). Free memory was 210.2 MB in the beginning and 293.3 MB in the end (delta: -83.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:17,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.15 ms. Allocated memory is still 322.4 MB. Free memory is still 293.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:02:17,776 INFO L168 Benchmark]: Boogie Preprocessor took 27.56 ms. Allocated memory is still 322.4 MB. Free memory was 293.3 MB in the beginning and 290.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:17,777 INFO L168 Benchmark]: RCFGBuilder took 450.67 ms. Allocated memory is still 322.4 MB. Free memory was 290.8 MB in the beginning and 263.4 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:17,777 INFO L168 Benchmark]: TraceAbstraction took 36935.63 ms. Allocated memory was 322.4 MB in the beginning and 554.2 MB in the end (delta: 231.7 MB). Free memory was 263.4 MB in the beginning and 409.5 MB in the end (delta: -146.0 MB). Peak memory consumption was 85.7 MB. Max. memory is 14.2 GB. [2020-10-09 14:02:17,787 INFO L336 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 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 335.26 ms. Allocated memory was 253.8 MB in the beginning and 322.4 MB in the end (delta: 68.7 MB). Free memory was 210.2 MB in the beginning and 293.3 MB in the end (delta: -83.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 39.15 ms. Allocated memory is still 322.4 MB. Free memory is still 293.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.56 ms. Allocated memory is still 322.4 MB. Free memory was 293.3 MB in the beginning and 290.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 450.67 ms. Allocated memory is still 322.4 MB. Free memory was 290.8 MB in the beginning and 263.4 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 36935.63 ms. Allocated memory was 322.4 MB in the beginning and 554.2 MB in the end (delta: 231.7 MB). Free memory was 263.4 MB in the beginning and 409.5 MB in the end (delta: -146.0 MB). Peak memory consumption was 85.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1346 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 122 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 135 PlacesBefore, 31 PlacesAfterwards, 138 TransitionsBefore, 30 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 4040 MoverChecksTotal - PositiveResult [Line: 67]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 303 SDtfs, 1726 SDslu, 817 SDs, 0 SdLazy, 2476 SolverSat, 321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 23.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=8, 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, 11 MinimizatonAttempts, 919 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 326 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 310 ConstructedInterpolants, 40 QuantifiedInterpolants, 139420 SizeOfPredicates, 73 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 14/42 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...