/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 13:25:15,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 13:25:15,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 13:25:15,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 13:25:15,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 13:25:15,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 13:25:15,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 13:25:15,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 13:25:15,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 13:25:15,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 13:25:15,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 13:25:15,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 13:25:15,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 13:25:15,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 13:25:15,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 13:25:15,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 13:25:15,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 13:25:15,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 13:25:15,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 13:25:15,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 13:25:15,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 13:25:15,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 13:25:15,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 13:25:15,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 13:25:15,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 13:25:15,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 13:25:15,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 13:25:15,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 13:25:15,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 13:25:15,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 13:25:15,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 13:25:15,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 13:25:15,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 13:25:15,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 13:25:15,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 13:25:15,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 13:25:15,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 13:25:15,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 13:25:15,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 13:25:15,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 13:25:15,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 13:25:15,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-11-09 13:25:15,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 13:25:15,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 13:25:15,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 13:25:15,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 13:25:15,811 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 13:25:15,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 13:25:15,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 13:25:15,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 13:25:15,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 13:25:15,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 13:25:15,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 13:25:15,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 13:25:15,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 13:25:15,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 13:25:15,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 13:25:15,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 13:25:15,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 13:25:15,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 13:25:15,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 13:25:15,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 13:25:15,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 13:25:15,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 13:25:15,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 13:25:15,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 13:25:15,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 13:25:15,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 13:25:15,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 13:25:15,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 13:25:15,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 13:25:16,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 13:25:16,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 13:25:16,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 13:25:16,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 13:25:16,305 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 13:25:16,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-11-09 13:25:16,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358fc5e3f/4194a88e96c24d0a8dbb3fe92cdf7407/FLAG092bd7bb6 [2020-11-09 13:25:17,103 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 13:25:17,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-11-09 13:25:17,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358fc5e3f/4194a88e96c24d0a8dbb3fe92cdf7407/FLAG092bd7bb6 [2020-11-09 13:25:17,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358fc5e3f/4194a88e96c24d0a8dbb3fe92cdf7407 [2020-11-09 13:25:17,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 13:25:17,396 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 13:25:17,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 13:25:17,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 13:25:17,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 13:25:17,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:25:17" (1/1) ... [2020-11-09 13:25:17,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38564d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:17, skipping insertion in model container [2020-11-09 13:25:17,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:25:17" (1/1) ... [2020-11-09 13:25:17,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 13:25:17,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 13:25:17,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:25:17,885 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 13:25:17,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:25:18,043 INFO L208 MainTranslator]: Completed translation [2020-11-09 13:25:18,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18 WrapperNode [2020-11-09 13:25:18,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 13:25:18,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 13:25:18,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 13:25:18,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 13:25:18,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 13:25:18,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 13:25:18,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 13:25:18,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 13:25:18,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 13:25:18,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 13:25:18,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 13:25:18,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 13:25:18,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 13:25:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-09 13:25:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-09 13:25:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-09 13:25:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-09 13:25:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 13:25:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 13:25:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 13:25:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 13:25:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 13:25:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 13:25:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 13:25:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 13:25:18,214 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 13:25:18,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 13:25:18,692 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-09 13:25:18,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:25:18 BoogieIcfgContainer [2020-11-09 13:25:18,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 13:25:18,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 13:25:18,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 13:25:18,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 13:25:18,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:25:17" (1/3) ... [2020-11-09 13:25:18,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b00022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:25:18, skipping insertion in model container [2020-11-09 13:25:18,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (2/3) ... [2020-11-09 13:25:18,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b00022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:25:18, skipping insertion in model container [2020-11-09 13:25:18,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:25:18" (3/3) ... [2020-11-09 13:25:18,703 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2020-11-09 13:25:18,720 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 13:25:18,720 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 13:25:18,725 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 13:25:18,726 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 13:25:18,758 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,759 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,759 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,760 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,760 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,760 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,761 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,761 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,761 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,761 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,763 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,763 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,763 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,763 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,763 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,764 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,764 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,764 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,765 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,766 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,766 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,766 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,767 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,767 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,767 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,768 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,769 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,769 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,770 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,770 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,771 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,771 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,772 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,772 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,775 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,775 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,775 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,775 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,776 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,776 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,783 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,783 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,783 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:18,787 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 13:25:18,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 13:25:18,825 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 13:25:18,825 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 13:25:18,826 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 13:25:18,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 13:25:18,826 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 13:25:18,826 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 13:25:18,826 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 13:25:18,826 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 13:25:18,838 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 13:25:18,839 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-11-09 13:25:18,843 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-11-09 13:25:18,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-11-09 13:25:18,887 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-11-09 13:25:18,888 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 13:25:18,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-11-09 13:25:18,896 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-11-09 13:25:21,502 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-09 13:25:22,723 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-09 13:25:22,881 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-09 13:25:23,191 WARN L194 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-09 13:25:23,354 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-09 13:25:23,364 INFO L131 LiptonReduction]: Checked pairs total: 1215 [2020-11-09 13:25:23,364 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-09 13:25:23,371 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-11-09 13:25:23,383 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-11-09 13:25:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-09 13:25:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 13:25:23,392 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:23,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 13:25:23,393 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:23,399 INFO L82 PathProgramCache]: Analyzing trace with hash -485169148, now seen corresponding path program 1 times [2020-11-09 13:25:23,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:23,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871956397] [2020-11-09 13:25:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:23,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871956397] [2020-11-09 13:25:23,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:23,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 13:25:23,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172012646] [2020-11-09 13:25:23,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 13:25:23,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:23,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 13:25:23,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 13:25:23,661 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-11-09 13:25:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:23,754 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-11-09 13:25:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 13:25:23,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-09 13:25:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:23,768 INFO L225 Difference]: With dead ends: 83 [2020-11-09 13:25:23,769 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 13:25:23,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 13:25:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 13:25:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-11-09 13:25:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-09 13:25:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-11-09 13:25:23,813 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-11-09 13:25:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:23,813 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-11-09 13:25:23,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 13:25:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-11-09 13:25:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 13:25:23,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:23,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:23,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 13:25:23,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:23,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1939234589, now seen corresponding path program 1 times [2020-11-09 13:25:23,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:23,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689237132] [2020-11-09 13:25:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:24,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689237132] [2020-11-09 13:25:24,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:24,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:25:24,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334706060] [2020-11-09 13:25:24,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 13:25:24,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:24,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 13:25:24,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 13:25:24,039 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-11-09 13:25:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:24,183 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-11-09 13:25:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 13:25:24,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 13:25:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:24,187 INFO L225 Difference]: With dead ends: 80 [2020-11-09 13:25:24,187 INFO L226 Difference]: Without dead ends: 75 [2020-11-09 13:25:24,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 13:25:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-09 13:25:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-11-09 13:25:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 13:25:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-11-09 13:25:24,213 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-11-09 13:25:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:24,216 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-11-09 13:25:24,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 13:25:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-11-09 13:25:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 13:25:24,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:24,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:24,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 13:25:24,222 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:24,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:24,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1904484586, now seen corresponding path program 1 times [2020-11-09 13:25:24,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:24,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765788984] [2020-11-09 13:25:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:24,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765788984] [2020-11-09 13:25:24,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:24,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:25:24,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285143252] [2020-11-09 13:25:24,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 13:25:24,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:24,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 13:25:24,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 13:25:24,408 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-11-09 13:25:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:24,559 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-11-09 13:25:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 13:25:24,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 13:25:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:24,562 INFO L225 Difference]: With dead ends: 83 [2020-11-09 13:25:24,562 INFO L226 Difference]: Without dead ends: 77 [2020-11-09 13:25:24,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 13:25:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-09 13:25:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-11-09 13:25:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 13:25:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-11-09 13:25:24,582 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-11-09 13:25:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:24,582 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-11-09 13:25:24,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 13:25:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-11-09 13:25:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 13:25:24,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:24,585 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:24,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 13:25:24,585 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:24,588 INFO L82 PathProgramCache]: Analyzing trace with hash 13298082, now seen corresponding path program 2 times [2020-11-09 13:25:24,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:24,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947753648] [2020-11-09 13:25:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:24,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947753648] [2020-11-09 13:25:24,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546341308] [2020-11-09 13:25:24,739 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 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 [2020-11-09 13:25:24,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:24,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:24,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 13:25:24,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:25,019 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:25,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:25,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-09 13:25:25,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362670689] [2020-11-09 13:25:25,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 13:25:25,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:25,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 13:25:25,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:25:25,035 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 9 states. [2020-11-09 13:25:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:25,161 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-11-09 13:25:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:25,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-11-09 13:25:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:25,163 INFO L225 Difference]: With dead ends: 101 [2020-11-09 13:25:25,163 INFO L226 Difference]: Without dead ends: 96 [2020-11-09 13:25:25,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-09 13:25:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-09 13:25:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-11-09 13:25:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-09 13:25:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-11-09 13:25:25,180 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-11-09 13:25:25,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:25,181 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-11-09 13:25:25,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 13:25:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-11-09 13:25:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 13:25:25,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:25,182 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:25,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:25,396 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:25,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1090495625, now seen corresponding path program 2 times [2020-11-09 13:25:25,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:25,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111503963] [2020-11-09 13:25:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:25,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111503963] [2020-11-09 13:25:25,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75251009] [2020-11-09 13:25:25,456 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 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 [2020-11-09 13:25:25,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:25,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:25,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 13:25:25,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:25,602 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:25,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:25,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-09 13:25:25,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130909609] [2020-11-09 13:25:25,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 13:25:25,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:25,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 13:25:25,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:25:25,645 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-11-09 13:25:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:25,837 INFO L93 Difference]: Finished difference Result 96 states and 231 transitions. [2020-11-09 13:25:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:25,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-11-09 13:25:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:25,838 INFO L225 Difference]: With dead ends: 96 [2020-11-09 13:25:25,839 INFO L226 Difference]: Without dead ends: 90 [2020-11-09 13:25:25,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-09 13:25:25,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-09 13:25:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-11-09 13:25:25,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-09 13:25:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-11-09 13:25:25,864 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-11-09 13:25:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:25,864 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-11-09 13:25:25,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 13:25:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-11-09 13:25:25,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:25,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:25,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:26,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:26,084 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:26,086 INFO L82 PathProgramCache]: Analyzing trace with hash 402914365, now seen corresponding path program 1 times [2020-11-09 13:25:26,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:26,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892867362] [2020-11-09 13:25:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:26,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892867362] [2020-11-09 13:25:26,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:26,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 13:25:26,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884664454] [2020-11-09 13:25:26,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 13:25:26,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:26,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 13:25:26,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:25:26,201 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-11-09 13:25:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:26,326 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-11-09 13:25:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:26,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 13:25:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:26,328 INFO L225 Difference]: With dead ends: 103 [2020-11-09 13:25:26,328 INFO L226 Difference]: Without dead ends: 98 [2020-11-09 13:25:26,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-09 13:25:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-11-09 13:25:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-09 13:25:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-11-09 13:25:26,351 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 10 [2020-11-09 13:25:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:26,351 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-11-09 13:25:26,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 13:25:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-11-09 13:25:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:26,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:26,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:26,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 13:25:26,356 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:26,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash 403029685, now seen corresponding path program 2 times [2020-11-09 13:25:26,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:26,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154450982] [2020-11-09 13:25:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:26,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154450982] [2020-11-09 13:25:26,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:26,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 13:25:26,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110193604] [2020-11-09 13:25:26,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 13:25:26,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:26,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 13:25:26,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:25:26,477 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 6 states. [2020-11-09 13:25:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:26,602 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-11-09 13:25:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:26,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 13:25:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:26,605 INFO L225 Difference]: With dead ends: 103 [2020-11-09 13:25:26,605 INFO L226 Difference]: Without dead ends: 98 [2020-11-09 13:25:26,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-09 13:25:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2020-11-09 13:25:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-09 13:25:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-11-09 13:25:26,625 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-11-09 13:25:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:26,625 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-11-09 13:25:26,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 13:25:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-11-09 13:25:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:26,629 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:26,629 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:26,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 13:25:26,629 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:26,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:26,630 INFO L82 PathProgramCache]: Analyzing trace with hash 412268739, now seen corresponding path program 3 times [2020-11-09 13:25:26,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:26,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526419081] [2020-11-09 13:25:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:26,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526419081] [2020-11-09 13:25:26,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692485347] [2020-11-09 13:25:26,704 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 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 [2020-11-09 13:25:26,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:25:26,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:26,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:26,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:26,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:26,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:26,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:26,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928944650] [2020-11-09 13:25:26,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:26,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:26,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:26,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:26,848 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 11 states. [2020-11-09 13:25:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:27,024 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-11-09 13:25:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 13:25:27,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-11-09 13:25:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:27,026 INFO L225 Difference]: With dead ends: 122 [2020-11-09 13:25:27,026 INFO L226 Difference]: Without dead ends: 117 [2020-11-09 13:25:27,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-11-09 13:25:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-09 13:25:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-11-09 13:25:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-09 13:25:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-11-09 13:25:27,033 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-11-09 13:25:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:27,034 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-11-09 13:25:27,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-11-09 13:25:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:27,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:27,035 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:27,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:27,250 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:27,250 INFO L82 PathProgramCache]: Analyzing trace with hash 554398346, now seen corresponding path program 3 times [2020-11-09 13:25:27,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:27,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202166887] [2020-11-09 13:25:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:27,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202166887] [2020-11-09 13:25:27,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32511325] [2020-11-09 13:25:27,332 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 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 [2020-11-09 13:25:27,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:25:27,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:27,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:27,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:27,466 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:27,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:27,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:27,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048680240] [2020-11-09 13:25:27,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:27,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:27,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:27,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:27,483 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-11-09 13:25:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:27,686 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-11-09 13:25:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 13:25:27,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-11-09 13:25:27,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:27,690 INFO L225 Difference]: With dead ends: 121 [2020-11-09 13:25:27,690 INFO L226 Difference]: Without dead ends: 115 [2020-11-09 13:25:27,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-11-09 13:25:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-09 13:25:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-11-09 13:25:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-09 13:25:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-11-09 13:25:27,697 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-11-09 13:25:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:27,697 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-11-09 13:25:27,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-11-09 13:25:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:27,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:27,698 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:27,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:27,913 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:27,915 INFO L82 PathProgramCache]: Analyzing trace with hash -394647540, now seen corresponding path program 3 times [2020-11-09 13:25:27,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:27,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904581045] [2020-11-09 13:25:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:27,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904581045] [2020-11-09 13:25:27,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165925095] [2020-11-09 13:25:27,985 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 [2020-11-09 13:25:28,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:25:28,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:28,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:28,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:28,122 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:28,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:28,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:28,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975834650] [2020-11-09 13:25:28,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:28,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:28,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:28,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:28,137 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-11-09 13:25:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:28,423 INFO L93 Difference]: Finished difference Result 129 states and 303 transitions. [2020-11-09 13:25:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 13:25:28,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:28,427 INFO L225 Difference]: With dead ends: 129 [2020-11-09 13:25:28,427 INFO L226 Difference]: Without dead ends: 124 [2020-11-09 13:25:28,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-11-09 13:25:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-09 13:25:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 94. [2020-11-09 13:25:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-09 13:25:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-11-09 13:25:28,442 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-11-09 13:25:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:28,442 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-11-09 13:25:28,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-11-09 13:25:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:28,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:28,444 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:28,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-09 13:25:28,645 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:28,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:28,645 INFO L82 PathProgramCache]: Analyzing trace with hash -394532220, now seen corresponding path program 4 times [2020-11-09 13:25:28,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:28,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163508437] [2020-11-09 13:25:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:28,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163508437] [2020-11-09 13:25:28,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814079560] [2020-11-09 13:25:28,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:28,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:25:28,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:28,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:28,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:28,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:28,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:28,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:28,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131174610] [2020-11-09 13:25:28,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:28,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:28,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:28,895 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-11-09 13:25:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:29,220 INFO L93 Difference]: Finished difference Result 147 states and 347 transitions. [2020-11-09 13:25:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 13:25:29,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:29,224 INFO L225 Difference]: With dead ends: 147 [2020-11-09 13:25:29,225 INFO L226 Difference]: Without dead ends: 139 [2020-11-09 13:25:29,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-11-09 13:25:29,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-09 13:25:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 99. [2020-11-09 13:25:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-09 13:25:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-11-09 13:25:29,234 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-11-09 13:25:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:29,235 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-11-09 13:25:29,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-11-09 13:25:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:29,236 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:29,236 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:29,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:29,449 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:29,450 INFO L82 PathProgramCache]: Analyzing trace with hash -394528376, now seen corresponding path program 5 times [2020-11-09 13:25:29,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:29,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288273872] [2020-11-09 13:25:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:29,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288273872] [2020-11-09 13:25:29,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595462979] [2020-11-09 13:25:29,531 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:29,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:29,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:29,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:29,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:29,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:29,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:29,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:29,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953341675] [2020-11-09 13:25:29,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:29,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:29,676 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-11-09 13:25:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:29,994 INFO L93 Difference]: Finished difference Result 137 states and 324 transitions. [2020-11-09 13:25:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 13:25:29,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:29,997 INFO L225 Difference]: With dead ends: 137 [2020-11-09 13:25:29,997 INFO L226 Difference]: Without dead ends: 132 [2020-11-09 13:25:29,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-11-09 13:25:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-09 13:25:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2020-11-09 13:25:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-09 13:25:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 241 transitions. [2020-11-09 13:25:30,005 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 241 transitions. Word has length 11 [2020-11-09 13:25:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:30,005 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 241 transitions. [2020-11-09 13:25:30,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 241 transitions. [2020-11-09 13:25:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:30,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:30,006 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:30,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:30,220 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:30,221 INFO L82 PathProgramCache]: Analyzing trace with hash -390953456, now seen corresponding path program 6 times [2020-11-09 13:25:30,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:30,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023807826] [2020-11-09 13:25:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:30,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023807826] [2020-11-09 13:25:30,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700244637] [2020-11-09 13:25:30,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:30,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-09 13:25:30,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:30,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:30,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:30,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:30,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:30,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:30,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530408000] [2020-11-09 13:25:30,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:30,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:30,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:30,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:30,458 INFO L87 Difference]: Start difference. First operand 100 states and 241 transitions. Second operand 11 states. [2020-11-09 13:25:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:30,767 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-11-09 13:25:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 13:25:30,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:30,768 INFO L225 Difference]: With dead ends: 136 [2020-11-09 13:25:30,769 INFO L226 Difference]: Without dead ends: 131 [2020-11-09 13:25:30,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-11-09 13:25:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-09 13:25:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 98. [2020-11-09 13:25:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-09 13:25:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-11-09 13:25:30,774 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-11-09 13:25:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:30,775 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-11-09 13:25:30,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-11-09 13:25:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:30,776 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:30,776 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:30,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-09 13:25:30,985 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:30,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:30,987 INFO L82 PathProgramCache]: Analyzing trace with hash -104542782, now seen corresponding path program 4 times [2020-11-09 13:25:30,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:30,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633973568] [2020-11-09 13:25:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:31,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633973568] [2020-11-09 13:25:31,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162305815] [2020-11-09 13:25:31,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:31,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:25:31,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:31,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:31,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:31,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:31,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:31,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:25:31,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578980743] [2020-11-09 13:25:31,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:25:31,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:31,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:25:31,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:25:31,227 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 13 states. [2020-11-09 13:25:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:31,472 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-11-09 13:25:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 13:25:31,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-11-09 13:25:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:31,474 INFO L225 Difference]: With dead ends: 143 [2020-11-09 13:25:31,475 INFO L226 Difference]: Without dead ends: 138 [2020-11-09 13:25:31,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-11-09 13:25:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-09 13:25:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-11-09 13:25:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-09 13:25:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-11-09 13:25:31,480 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-11-09 13:25:31,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:31,481 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-11-09 13:25:31,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:25:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-11-09 13:25:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:31,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:31,482 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:31,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:31,683 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:31,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:31,684 INFO L82 PathProgramCache]: Analyzing trace with hash 6503895, now seen corresponding path program 4 times [2020-11-09 13:25:31,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:31,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121064327] [2020-11-09 13:25:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:31,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121064327] [2020-11-09 13:25:31,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25821555] [2020-11-09 13:25:31,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:31,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:25:31,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:31,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:31,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:31,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:31,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:31,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:25:31,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123002364] [2020-11-09 13:25:31,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:25:31,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:31,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:25:31,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:25:31,951 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-11-09 13:25:32,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:32,223 INFO L93 Difference]: Finished difference Result 147 states and 350 transitions. [2020-11-09 13:25:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 13:25:32,224 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-11-09 13:25:32,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:32,226 INFO L225 Difference]: With dead ends: 147 [2020-11-09 13:25:32,226 INFO L226 Difference]: Without dead ends: 141 [2020-11-09 13:25:32,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-11-09 13:25:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-09 13:25:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-11-09 13:25:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-09 13:25:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-11-09 13:25:32,232 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-11-09 13:25:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:32,233 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-11-09 13:25:32,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:25:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-11-09 13:25:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:25:32,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:32,234 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:32,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 13:25:32,448 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:32,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:32,449 INFO L82 PathProgramCache]: Analyzing trace with hash 650737181, now seen corresponding path program 7 times [2020-11-09 13:25:32,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:32,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918794323] [2020-11-09 13:25:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:32,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918794323] [2020-11-09 13:25:32,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146809521] [2020-11-09 13:25:32,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:32,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:32,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:32,708 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:32,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:32,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:25:32,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670229022] [2020-11-09 13:25:32,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:25:32,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:32,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:25:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:25:32,726 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-11-09 13:25:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:33,193 INFO L93 Difference]: Finished difference Result 157 states and 374 transitions. [2020-11-09 13:25:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-09 13:25:33,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:25:33,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:33,195 INFO L225 Difference]: With dead ends: 157 [2020-11-09 13:25:33,195 INFO L226 Difference]: Without dead ends: 152 [2020-11-09 13:25:33,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-11-09 13:25:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-09 13:25:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 112. [2020-11-09 13:25:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-09 13:25:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-11-09 13:25:33,201 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-11-09 13:25:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:33,201 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-11-09 13:25:33,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:25:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-11-09 13:25:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:25:33,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:33,202 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:33,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-09 13:25:33,416 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash 650852501, now seen corresponding path program 8 times [2020-11-09 13:25:33,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:33,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828159029] [2020-11-09 13:25:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:33,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828159029] [2020-11-09 13:25:33,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243376240] [2020-11-09 13:25:33,495 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:33,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:33,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:33,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:33,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:33,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:37,839 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 20 [2020-11-09 13:25:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:37,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:37,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-11-09 13:25:37,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604042642] [2020-11-09 13:25:37,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 13:25:37,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:37,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 13:25:37,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=138, Unknown=1, NotChecked=0, Total=182 [2020-11-09 13:25:37,843 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 14 states. [2020-11-09 13:25:41,251 WARN L194 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2020-11-09 13:25:43,344 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-09 13:25:50,730 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-09 13:26:04,147 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-09 13:26:10,344 WARN L194 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-09 13:26:35,092 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 31 [2020-11-09 13:27:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:23,543 INFO L93 Difference]: Finished difference Result 175 states and 412 transitions. [2020-11-09 13:27:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-09 13:27:23,578 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-11-09 13:27:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:23,579 INFO L225 Difference]: With dead ends: 175 [2020-11-09 13:27:23,579 INFO L226 Difference]: Without dead ends: 168 [2020-11-09 13:27:23,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=271, Invalid=708, Unknown=13, NotChecked=0, Total=992 [2020-11-09 13:27:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-11-09 13:27:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 112. [2020-11-09 13:27:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-09 13:27:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-11-09 13:27:23,591 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-11-09 13:27:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:23,591 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-11-09 13:27:23,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 13:27:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-11-09 13:27:23,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:23,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:23,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:23,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-09 13:27:23,807 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:23,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:23,808 INFO L82 PathProgramCache]: Analyzing trace with hash 650856345, now seen corresponding path program 9 times [2020-11-09 13:27:23,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:23,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978203280] [2020-11-09 13:27:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:23,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978203280] [2020-11-09 13:27:23,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099291454] [2020-11-09 13:27:23,909 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:23,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:27:23,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:23,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:23,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:24,081 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:24,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:24,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:24,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358890135] [2020-11-09 13:27:24,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:24,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:24,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:24,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:24,102 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 13 states. [2020-11-09 13:27:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:24,556 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2020-11-09 13:27:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 13:27:24,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:24,558 INFO L225 Difference]: With dead ends: 170 [2020-11-09 13:27:24,558 INFO L226 Difference]: Without dead ends: 162 [2020-11-09 13:27:24,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-11-09 13:27:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-09 13:27:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 112. [2020-11-09 13:27:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-09 13:27:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-11-09 13:27:24,564 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-11-09 13:27:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:24,564 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-11-09 13:27:24,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-11-09 13:27:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:24,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:24,565 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:24,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-09 13:27:24,778 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:24,779 INFO L82 PathProgramCache]: Analyzing trace with hash 654427421, now seen corresponding path program 10 times [2020-11-09 13:27:24,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:24,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764349343] [2020-11-09 13:27:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:24,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764349343] [2020-11-09 13:27:24,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771554566] [2020-11-09 13:27:24,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:24,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:27:24,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:24,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:25,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:25,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:25,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:25,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889950786] [2020-11-09 13:27:25,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:25,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:25,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:25,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:25,045 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-11-09 13:27:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:25,690 INFO L93 Difference]: Finished difference Result 181 states and 433 transitions. [2020-11-09 13:27:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-09 13:27:25,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:25,692 INFO L225 Difference]: With dead ends: 181 [2020-11-09 13:27:25,692 INFO L226 Difference]: Without dead ends: 173 [2020-11-09 13:27:25,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2020-11-09 13:27:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-09 13:27:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 116. [2020-11-09 13:27:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-09 13:27:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 291 transitions. [2020-11-09 13:27:25,701 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 291 transitions. Word has length 12 [2020-11-09 13:27:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:25,701 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 291 transitions. [2020-11-09 13:27:25,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 291 transitions. [2020-11-09 13:27:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:25,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:25,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:25,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:25,918 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:25,919 INFO L82 PathProgramCache]: Analyzing trace with hash 654431265, now seen corresponding path program 11 times [2020-11-09 13:27:25,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:25,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175144] [2020-11-09 13:27:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:26,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175144] [2020-11-09 13:27:26,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334267722] [2020-11-09 13:27:26,004 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:26,069 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:27:26,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:26,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:26,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:26,159 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:26,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:26,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:26,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418570791] [2020-11-09 13:27:26,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:26,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:26,178 INFO L87 Difference]: Start difference. First operand 116 states and 291 transitions. Second operand 13 states. [2020-11-09 13:27:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:26,708 INFO L93 Difference]: Finished difference Result 184 states and 440 transitions. [2020-11-09 13:27:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-09 13:27:26,709 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:26,711 INFO L225 Difference]: With dead ends: 184 [2020-11-09 13:27:26,711 INFO L226 Difference]: Without dead ends: 176 [2020-11-09 13:27:26,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:27:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-09 13:27:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-11-09 13:27:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-09 13:27:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 281 transitions. [2020-11-09 13:27:26,720 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 281 transitions. Word has length 12 [2020-11-09 13:27:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:26,721 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 281 transitions. [2020-11-09 13:27:26,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 281 transitions. [2020-11-09 13:27:26,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:26,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:26,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:26,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:26,937 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:26,938 INFO L82 PathProgramCache]: Analyzing trace with hash 654546585, now seen corresponding path program 12 times [2020-11-09 13:27:26,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:26,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608572153] [2020-11-09 13:27:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:27,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608572153] [2020-11-09 13:27:27,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297244917] [2020-11-09 13:27:27,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:27,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-09 13:27:27,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:27,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:27,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:27,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:27,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:27,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:27,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020271166] [2020-11-09 13:27:27,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:27,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:27,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:27,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:27,240 INFO L87 Difference]: Start difference. First operand 114 states and 281 transitions. Second operand 13 states. [2020-11-09 13:27:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:27,862 INFO L93 Difference]: Finished difference Result 184 states and 437 transitions. [2020-11-09 13:27:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-09 13:27:27,864 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:27,866 INFO L225 Difference]: With dead ends: 184 [2020-11-09 13:27:27,866 INFO L226 Difference]: Without dead ends: 176 [2020-11-09 13:27:27,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:27:27,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-09 13:27:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 119. [2020-11-09 13:27:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-09 13:27:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 289 transitions. [2020-11-09 13:27:27,873 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 289 transitions. Word has length 12 [2020-11-09 13:27:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:27,875 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 289 transitions. [2020-11-09 13:27:27,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 289 transitions. [2020-11-09 13:27:27,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:27,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:27,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:28,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:28,090 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:28,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:28,091 INFO L82 PathProgramCache]: Analyzing trace with hash 765369105, now seen corresponding path program 13 times [2020-11-09 13:27:28,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:28,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518918263] [2020-11-09 13:27:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:28,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518918263] [2020-11-09 13:27:28,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021921729] [2020-11-09 13:27:28,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:28,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:28,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:28,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:28,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:28,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:28,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778101736] [2020-11-09 13:27:28,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:28,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:28,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:28,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:28,345 INFO L87 Difference]: Start difference. First operand 119 states and 289 transitions. Second operand 13 states. [2020-11-09 13:27:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:28,945 INFO L93 Difference]: Finished difference Result 165 states and 388 transitions. [2020-11-09 13:27:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-09 13:27:28,946 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:28,947 INFO L225 Difference]: With dead ends: 165 [2020-11-09 13:27:28,947 INFO L226 Difference]: Without dead ends: 160 [2020-11-09 13:27:28,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:27:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-09 13:27:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114. [2020-11-09 13:27:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-09 13:27:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-11-09 13:27:28,953 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-11-09 13:27:28,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:28,953 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-11-09 13:27:28,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:28,953 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-11-09 13:27:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:28,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:28,954 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:29,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-09 13:27:29,166 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1054169251, now seen corresponding path program 5 times [2020-11-09 13:27:29,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:29,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955339570] [2020-11-09 13:27:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:29,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955339570] [2020-11-09 13:27:29,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158545717] [2020-11-09 13:27:29,247 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:29,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 13:27:29,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:29,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:29,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:29,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:29,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:29,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:27:29,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645955560] [2020-11-09 13:27:29,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:27:29,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:29,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:27:29,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:27:29,458 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 15 states. [2020-11-09 13:27:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:29,795 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-11-09 13:27:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 13:27:29,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-11-09 13:27:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:29,797 INFO L225 Difference]: With dead ends: 164 [2020-11-09 13:27:29,797 INFO L226 Difference]: Without dead ends: 159 [2020-11-09 13:27:29,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2020-11-09 13:27:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-09 13:27:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-11-09 13:27:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-09 13:27:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-11-09 13:27:29,808 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-11-09 13:27:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:29,808 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-11-09 13:27:29,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:27:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-11-09 13:27:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:29,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:29,809 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:30,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-09 13:27:30,010 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:30,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:30,010 INFO L82 PathProgramCache]: Analyzing trace with hash 201645098, now seen corresponding path program 5 times [2020-11-09 13:27:30,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:30,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347186697] [2020-11-09 13:27:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:30,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347186697] [2020-11-09 13:27:30,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061711030] [2020-11-09 13:27:30,099 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:30,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 13:27:30,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:30,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:30,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:30,280 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:30,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:30,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:27:30,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812088310] [2020-11-09 13:27:30,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:27:30,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:30,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:27:30,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:27:30,318 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-11-09 13:27:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:30,706 INFO L93 Difference]: Finished difference Result 173 states and 412 transitions. [2020-11-09 13:27:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 13:27:30,707 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-11-09 13:27:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:30,709 INFO L225 Difference]: With dead ends: 173 [2020-11-09 13:27:30,709 INFO L226 Difference]: Without dead ends: 167 [2020-11-09 13:27:30,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2020-11-09 13:27:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-09 13:27:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-11-09 13:27:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-09 13:27:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-11-09 13:27:30,716 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-11-09 13:27:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:30,716 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-11-09 13:27:30,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:27:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-11-09 13:27:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:27:30,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:30,717 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:30,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-09 13:27:30,932 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:30,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1302074836, now seen corresponding path program 14 times [2020-11-09 13:27:30,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:30,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508078158] [2020-11-09 13:27:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:31,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508078158] [2020-11-09 13:27:31,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038512168] [2020-11-09 13:27:31,026 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:31,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:27:31,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:31,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:31,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:31,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:31,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:31,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:27:31,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195557022] [2020-11-09 13:27:31,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:27:31,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:31,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:27:31,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:27:31,236 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-11-09 13:27:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:31,993 INFO L93 Difference]: Finished difference Result 188 states and 448 transitions. [2020-11-09 13:27:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 13:27:31,994 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:27:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:31,995 INFO L225 Difference]: With dead ends: 188 [2020-11-09 13:27:31,996 INFO L226 Difference]: Without dead ends: 183 [2020-11-09 13:27:31,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=305, Invalid=751, Unknown=0, NotChecked=0, Total=1056 [2020-11-09 13:27:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-09 13:27:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 131. [2020-11-09 13:27:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-09 13:27:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-11-09 13:27:32,004 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-11-09 13:27:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:32,006 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-11-09 13:27:32,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:27:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-11-09 13:27:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:27:32,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:32,008 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:32,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-09 13:27:32,220 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1301959516, now seen corresponding path program 15 times [2020-11-09 13:27:32,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:32,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929405773] [2020-11-09 13:27:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:32,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929405773] [2020-11-09 13:27:32,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552519128] [2020-11-09 13:27:32,339 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:32,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-09 13:27:32,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:32,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:32,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:32,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:33,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:33,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-11-09 13:27:33,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568886021] [2020-11-09 13:27:33,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-09 13:27:33,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:33,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-09 13:27:33,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=185, Unknown=1, NotChecked=0, Total=240 [2020-11-09 13:27:33,834 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 16 states. [2020-11-09 13:27:38,227 WARN L194 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-11-09 13:27:44,979 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-09 13:27:57,857 WARN L194 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-11-09 13:28:12,731 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-09 13:28:34,385 WARN L194 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-11-09 13:28:53,492 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-11-09 13:29:07,645 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 32 Received shutdown request... [2020-11-09 13:29:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-09 13:29:59,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-09 13:29:59,171 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-09 13:29:59,175 WARN L250 ceAbstractionStarter]: Timeout [2020-11-09 13:29:59,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 01:29:59 BasicIcfg [2020-11-09 13:29:59,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 13:29:59,177 INFO L168 Benchmark]: Toolchain (without parser) took 281786.03 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 126.0 MB in the beginning and 169.5 MB in the end (delta: -43.5 MB). Peak memory consumption was 70.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:59,177 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 13:29:59,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 133.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:59,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.21 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 131.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:59,178 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 151.0 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:59,181 INFO L168 Benchmark]: RCFGBuilder took 566.68 ms. Allocated memory is still 151.0 MB. Free memory was 129.5 MB in the beginning and 109.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:59,182 INFO L168 Benchmark]: TraceAbstraction took 280480.00 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 108.5 MB in the beginning and 169.5 MB in the end (delta: -61.0 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:59,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 646.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 133.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 32.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.21 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 131.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 151.0 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 566.68 ms. Allocated memory is still 151.0 MB. Free memory was 129.5 MB in the beginning and 109.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 280480.00 ms. Allocated memory was 151.0 MB in the beginning and 263.2 MB in the end (delta: 112.2 MB). Free memory was 108.5 MB in the beginning and 169.5 MB in the end (delta: -61.0 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 713 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 17 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 16 TransitionsAfterwards, 1272 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 1215 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (131states) and FLOYD_HOARE automaton (currently 34 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (174 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 280.3s, OverallIterations: 26, TraceHistogramMax: 5, AutomataDifference: 258.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 336 SDtfs, 2815 SDslu, 2302 SDs, 0 SdLazy, 1838 SolverSat, 425 SolverUnsat, 70 SolverUnknown, 0 SolverNotchecked, 136.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 97 SyntacticMatches, 21 SemanticMatches, 521 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2697 ImplicationChecksByTransitivity, 128.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 847 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 518 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 471 ConstructedInterpolants, 2 QuantifiedInterpolants, 50979 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1980 ConjunctsInSsa, 183 ConjunctsInUnsatCore, 47 InterpolantComputations, 5 PerfectInterpolantSequences, 0/146 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 could not prove your program: Timeout Completed graceful shutdown